NEMR3Native-linux.cpp@ 97178

Last change on this file since 97178 was 97178, checked in by vboxsync, 2 years ago
VMM/CPUM,EM,HM,IEM,++: Moved VMCPU_FF_INHIBIT_INTERRUPTS and VMCPU_FF_BLOCK_NMIS to CPUMCTX::fInhibit. Moved ldtr and tr up to the CPUMCTXCORE area in hope for better cache alignment of rip, rflags and crX register fields. bugref:9941
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 116.3 KB

Line
1	/* $Id: NEMR3Native-linux.cpp 97178 2022-10-17 21:06:03Z vboxsync $ */
2	/** @file
3	* NEM - Native execution manager, native ring-3 Linux backend.
4	*/
5
6	/*
7	* Copyright (C) 2021-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_NEM
33	#define VMCPU_INCL_CPUM_GST_CTX
34	#include <VBox/vmm/nem.h>
35	#include <VBox/vmm/iem.h>
36	#include <VBox/vmm/em.h>
37	#include <VBox/vmm/apic.h>
38	#include <VBox/vmm/pdm.h>
39	#include <VBox/vmm/trpm.h>
40	#include "NEMInternal.h"
41	#include <VBox/vmm/vmcc.h>
42
43	#include <iprt/alloca.h>
44	#include <iprt/string.h>
45	#include <iprt/system.h>
46	#include <iprt/x86.h>
47
48	#include <errno.h>
49	#include <unistd.h>
50	#include <sys/ioctl.h>
51	#include <sys/fcntl.h>
52	#include <sys/mman.h>
53	#include <linux/kvm.h>
54
55	/*
56	* Supply stuff missing from the kvm.h on the build box.
57	*/
58	#ifndef KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON /* since 5.4 */
59	# define KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON 4
60	#endif
61
62
63
64	/**
65	* Worker for nemR3NativeInit that gets the hypervisor capabilities.
66	*
67	* @returns VBox status code.
68	* @param pVM The cross context VM structure.
69	* @param pErrInfo Where to always return error info.
70	*/
71	static int nemR3LnxInitCheckCapabilities(PVM pVM, PRTERRINFO pErrInfo)
72	{
73	AssertReturn(pVM->nem.s.fdVm != -1, RTErrInfoSet(pErrInfo, VERR_WRONG_ORDER, "Wrong initalization order"));
74
75	/*
76	* Capabilities.
77	*/
78	static const struct
79	{
80	const char *pszName;
81	int iCap;
82	uint32_t offNem : 24;
83	uint32_t cbNem : 3;
84	uint32_t fReqNonZero : 1;
85	uint32_t uReserved : 4;
86	} s_aCaps[] =
87	{
88	#define CAP_ENTRY__L(a_Define) { #a_Define, a_Define, UINT32_C(0x00ffffff), 0, 0, 0 }
89	#define CAP_ENTRY__S(a_Define, a_Member) { #a_Define, a_Define, RT_UOFFSETOF(NEM, a_Member), RT_SIZEOFMEMB(NEM, a_Member), 0, 0 }
90	#define CAP_ENTRY_MS(a_Define, a_Member) { #a_Define, a_Define, RT_UOFFSETOF(NEM, a_Member), RT_SIZEOFMEMB(NEM, a_Member), 1, 0 }
91	#define CAP_ENTRY__U(a_Number) { "KVM_CAP_" #a_Number, a_Number, UINT32_C(0x00ffffff), 0, 0, 0 }
92	#define CAP_ENTRY_ML(a_Number) { "KVM_CAP_" #a_Number, a_Number, UINT32_C(0x00ffffff), 0, 1, 0 }
93
94	CAP_ENTRY__L(KVM_CAP_IRQCHIP), /* 0 */
95	CAP_ENTRY_ML(KVM_CAP_HLT),
96	CAP_ENTRY__L(KVM_CAP_MMU_SHADOW_CACHE_CONTROL),
97	CAP_ENTRY_ML(KVM_CAP_USER_MEMORY),
98	CAP_ENTRY__L(KVM_CAP_SET_TSS_ADDR),
99	CAP_ENTRY__U(5),
100	CAP_ENTRY__L(KVM_CAP_VAPIC),
101	CAP_ENTRY__L(KVM_CAP_EXT_CPUID),
102	CAP_ENTRY__L(KVM_CAP_CLOCKSOURCE),
103	CAP_ENTRY__L(KVM_CAP_NR_VCPUS),
104	CAP_ENTRY_MS(KVM_CAP_NR_MEMSLOTS, cMaxMemSlots), /* 10 */
105	CAP_ENTRY__L(KVM_CAP_PIT),
106	CAP_ENTRY__L(KVM_CAP_NOP_IO_DELAY),
107	CAP_ENTRY__L(KVM_CAP_PV_MMU),
108	CAP_ENTRY__L(KVM_CAP_MP_STATE),
109	CAP_ENTRY__L(KVM_CAP_COALESCED_MMIO),
110	CAP_ENTRY__L(KVM_CAP_SYNC_MMU),
111	CAP_ENTRY__U(17),
112	CAP_ENTRY__L(KVM_CAP_IOMMU),
113	CAP_ENTRY__U(19), /* Buggy KVM_CAP_JOIN_MEMORY_REGIONS? */
114	CAP_ENTRY__U(20), /* Mon-working KVM_CAP_DESTROY_MEMORY_REGION? */
115	CAP_ENTRY__L(KVM_CAP_DESTROY_MEMORY_REGION_WORKS), /* 21 */
116	CAP_ENTRY__L(KVM_CAP_USER_NMI),
117	#ifdef __KVM_HAVE_GUEST_DEBUG
118	CAP_ENTRY__L(KVM_CAP_SET_GUEST_DEBUG),
119	#endif
120	#ifdef __KVM_HAVE_PIT
121	CAP_ENTRY__L(KVM_CAP_REINJECT_CONTROL),
122	#endif
123	CAP_ENTRY__L(KVM_CAP_IRQ_ROUTING),
124	CAP_ENTRY__L(KVM_CAP_IRQ_INJECT_STATUS),
125	CAP_ENTRY__U(27),
126	CAP_ENTRY__U(28),
127	CAP_ENTRY__L(KVM_CAP_ASSIGN_DEV_IRQ),
128	CAP_ENTRY__L(KVM_CAP_JOIN_MEMORY_REGIONS_WORKS), /* 30 */
129	#ifdef __KVM_HAVE_MCE
130	CAP_ENTRY__L(KVM_CAP_MCE),
131	#endif
132	CAP_ENTRY__L(KVM_CAP_IRQFD),
133	#ifdef __KVM_HAVE_PIT
134	CAP_ENTRY__L(KVM_CAP_PIT2),
135	#endif
136	CAP_ENTRY__L(KVM_CAP_SET_BOOT_CPU_ID),
137	#ifdef __KVM_HAVE_PIT_STATE2
138	CAP_ENTRY__L(KVM_CAP_PIT_STATE2),
139	#endif
140	CAP_ENTRY__L(KVM_CAP_IOEVENTFD),
141	CAP_ENTRY__L(KVM_CAP_SET_IDENTITY_MAP_ADDR),
142	#ifdef __KVM_HAVE_XEN_HVM
143	CAP_ENTRY__L(KVM_CAP_XEN_HVM),
144	#endif
145	CAP_ENTRY_ML(KVM_CAP_ADJUST_CLOCK),
146	CAP_ENTRY__L(KVM_CAP_INTERNAL_ERROR_DATA), /* 40 */
147	#ifdef __KVM_HAVE_VCPU_EVENTS
148	CAP_ENTRY_ML(KVM_CAP_VCPU_EVENTS),
149	#else
150	CAP_ENTRY_MU(41),
151	#endif
152	CAP_ENTRY__L(KVM_CAP_S390_PSW),
153	CAP_ENTRY__L(KVM_CAP_PPC_SEGSTATE),
154	CAP_ENTRY__L(KVM_CAP_HYPERV),
155	CAP_ENTRY__L(KVM_CAP_HYPERV_VAPIC),
156	CAP_ENTRY__L(KVM_CAP_HYPERV_SPIN),
157	CAP_ENTRY__L(KVM_CAP_PCI_SEGMENT),
158	CAP_ENTRY__L(KVM_CAP_PPC_PAIRED_SINGLES),
159	CAP_ENTRY__L(KVM_CAP_INTR_SHADOW),
160	#ifdef __KVM_HAVE_DEBUGREGS
161	CAP_ENTRY__L(KVM_CAP_DEBUGREGS), /* 50 */
162	#endif
163	CAP_ENTRY__S(KVM_CAP_X86_ROBUST_SINGLESTEP, fRobustSingleStep),
164	CAP_ENTRY__L(KVM_CAP_PPC_OSI),
165	CAP_ENTRY__L(KVM_CAP_PPC_UNSET_IRQ),
166	CAP_ENTRY__L(KVM_CAP_ENABLE_CAP),
167	#ifdef __KVM_HAVE_XSAVE
168	CAP_ENTRY_ML(KVM_CAP_XSAVE),
169	#else
170	CAP_ENTRY_MU(55),
171	#endif
172	#ifdef __KVM_HAVE_XCRS
173	CAP_ENTRY_ML(KVM_CAP_XCRS),
174	#else
175	CAP_ENTRY_MU(56),
176	#endif
177	CAP_ENTRY__L(KVM_CAP_PPC_GET_PVINFO),
178	CAP_ENTRY__L(KVM_CAP_PPC_IRQ_LEVEL),
179	CAP_ENTRY__L(KVM_CAP_ASYNC_PF),
180	CAP_ENTRY__L(KVM_CAP_TSC_CONTROL), /* 60 */
181	CAP_ENTRY__L(KVM_CAP_GET_TSC_KHZ),
182	CAP_ENTRY__L(KVM_CAP_PPC_BOOKE_SREGS),
183	CAP_ENTRY__L(KVM_CAP_SPAPR_TCE),
184	CAP_ENTRY__L(KVM_CAP_PPC_SMT),
185	CAP_ENTRY__L(KVM_CAP_PPC_RMA),
186	CAP_ENTRY__L(KVM_CAP_MAX_VCPUS),
187	CAP_ENTRY__L(KVM_CAP_PPC_HIOR),
188	CAP_ENTRY__L(KVM_CAP_PPC_PAPR),
189	CAP_ENTRY__L(KVM_CAP_SW_TLB),
190	CAP_ENTRY__L(KVM_CAP_ONE_REG), /* 70 */
191	CAP_ENTRY__L(KVM_CAP_S390_GMAP),
192	CAP_ENTRY__L(KVM_CAP_TSC_DEADLINE_TIMER),
193	CAP_ENTRY__L(KVM_CAP_S390_UCONTROL),
194	CAP_ENTRY__L(KVM_CAP_SYNC_REGS),
195	CAP_ENTRY__L(KVM_CAP_PCI_2_3),
196	CAP_ENTRY__L(KVM_CAP_KVMCLOCK_CTRL),
197	CAP_ENTRY__L(KVM_CAP_SIGNAL_MSI),
198	CAP_ENTRY__L(KVM_CAP_PPC_GET_SMMU_INFO),
199	CAP_ENTRY__L(KVM_CAP_S390_COW),
200	CAP_ENTRY__L(KVM_CAP_PPC_ALLOC_HTAB), /* 80 */
201	CAP_ENTRY__L(KVM_CAP_READONLY_MEM),
202	CAP_ENTRY__L(KVM_CAP_IRQFD_RESAMPLE),
203	CAP_ENTRY__L(KVM_CAP_PPC_BOOKE_WATCHDOG),
204	CAP_ENTRY__L(KVM_CAP_PPC_HTAB_FD),
205	CAP_ENTRY__L(KVM_CAP_S390_CSS_SUPPORT),
206	CAP_ENTRY__L(KVM_CAP_PPC_EPR),
207	CAP_ENTRY__L(KVM_CAP_ARM_PSCI),
208	CAP_ENTRY__L(KVM_CAP_ARM_SET_DEVICE_ADDR),
209	CAP_ENTRY__L(KVM_CAP_DEVICE_CTRL),
210	CAP_ENTRY__L(KVM_CAP_IRQ_MPIC), /* 90 */
211	CAP_ENTRY__L(KVM_CAP_PPC_RTAS),
212	CAP_ENTRY__L(KVM_CAP_IRQ_XICS),
213	CAP_ENTRY__L(KVM_CAP_ARM_EL1_32BIT),
214	CAP_ENTRY__L(KVM_CAP_SPAPR_MULTITCE),
215	CAP_ENTRY__L(KVM_CAP_EXT_EMUL_CPUID),
216	CAP_ENTRY__L(KVM_CAP_HYPERV_TIME),
217	CAP_ENTRY__L(KVM_CAP_IOAPIC_POLARITY_IGNORED),
218	CAP_ENTRY__L(KVM_CAP_ENABLE_CAP_VM),
219	CAP_ENTRY__L(KVM_CAP_S390_IRQCHIP),
220	CAP_ENTRY__L(KVM_CAP_IOEVENTFD_NO_LENGTH), /* 100 */
221	CAP_ENTRY__L(KVM_CAP_VM_ATTRIBUTES),
222	CAP_ENTRY__L(KVM_CAP_ARM_PSCI_0_2),
223	CAP_ENTRY__L(KVM_CAP_PPC_FIXUP_HCALL),
224	CAP_ENTRY__L(KVM_CAP_PPC_ENABLE_HCALL),
225	CAP_ENTRY__L(KVM_CAP_CHECK_EXTENSION_VM),
226	CAP_ENTRY__L(KVM_CAP_S390_USER_SIGP),
227	CAP_ENTRY__L(KVM_CAP_S390_VECTOR_REGISTERS),
228	CAP_ENTRY__L(KVM_CAP_S390_MEM_OP),
229	CAP_ENTRY__L(KVM_CAP_S390_USER_STSI),
230	CAP_ENTRY__L(KVM_CAP_S390_SKEYS), /* 110 */
231	CAP_ENTRY__L(KVM_CAP_MIPS_FPU),
232	CAP_ENTRY__L(KVM_CAP_MIPS_MSA),
233	CAP_ENTRY__L(KVM_CAP_S390_INJECT_IRQ),
234	CAP_ENTRY__L(KVM_CAP_S390_IRQ_STATE),
235	CAP_ENTRY__L(KVM_CAP_PPC_HWRNG),
236	CAP_ENTRY__L(KVM_CAP_DISABLE_QUIRKS),
237	CAP_ENTRY__L(KVM_CAP_X86_SMM),
238	CAP_ENTRY__L(KVM_CAP_MULTI_ADDRESS_SPACE),
239	CAP_ENTRY__L(KVM_CAP_GUEST_DEBUG_HW_BPS),
240	CAP_ENTRY__L(KVM_CAP_GUEST_DEBUG_HW_WPS), /* 120 */
241	CAP_ENTRY__L(KVM_CAP_SPLIT_IRQCHIP),
242	CAP_ENTRY__L(KVM_CAP_IOEVENTFD_ANY_LENGTH),
243	CAP_ENTRY__L(KVM_CAP_HYPERV_SYNIC),
244	CAP_ENTRY__L(KVM_CAP_S390_RI),
245	CAP_ENTRY__L(KVM_CAP_SPAPR_TCE_64),
246	CAP_ENTRY__L(KVM_CAP_ARM_PMU_V3),
247	CAP_ENTRY__L(KVM_CAP_VCPU_ATTRIBUTES),
248	CAP_ENTRY__L(KVM_CAP_MAX_VCPU_ID),
249	CAP_ENTRY__L(KVM_CAP_X2APIC_API),
250	CAP_ENTRY__L(KVM_CAP_S390_USER_INSTR0), /* 130 */
251	CAP_ENTRY__L(KVM_CAP_MSI_DEVID),
252	CAP_ENTRY__L(KVM_CAP_PPC_HTM),
253	CAP_ENTRY__L(KVM_CAP_SPAPR_RESIZE_HPT),
254	CAP_ENTRY__L(KVM_CAP_PPC_MMU_RADIX),
255	CAP_ENTRY__L(KVM_CAP_PPC_MMU_HASH_V3),
256	CAP_ENTRY__L(KVM_CAP_IMMEDIATE_EXIT),
257	CAP_ENTRY__L(KVM_CAP_MIPS_VZ),
258	CAP_ENTRY__L(KVM_CAP_MIPS_TE),
259	CAP_ENTRY__L(KVM_CAP_MIPS_64BIT),
260	CAP_ENTRY__L(KVM_CAP_S390_GS), /* 140 */
261	CAP_ENTRY__L(KVM_CAP_S390_AIS),
262	CAP_ENTRY__L(KVM_CAP_SPAPR_TCE_VFIO),
263	CAP_ENTRY__L(KVM_CAP_X86_DISABLE_EXITS),
264	CAP_ENTRY__L(KVM_CAP_ARM_USER_IRQ),
265	CAP_ENTRY__L(KVM_CAP_S390_CMMA_MIGRATION),
266	CAP_ENTRY__L(KVM_CAP_PPC_FWNMI),
267	CAP_ENTRY__L(KVM_CAP_PPC_SMT_POSSIBLE),
268	CAP_ENTRY__L(KVM_CAP_HYPERV_SYNIC2),
269	CAP_ENTRY__L(KVM_CAP_HYPERV_VP_INDEX),
270	CAP_ENTRY__L(KVM_CAP_S390_AIS_MIGRATION), /* 150 */
271	CAP_ENTRY__L(KVM_CAP_PPC_GET_CPU_CHAR),
272	CAP_ENTRY__L(KVM_CAP_S390_BPB),
273	CAP_ENTRY__L(KVM_CAP_GET_MSR_FEATURES),
274	CAP_ENTRY__L(KVM_CAP_HYPERV_EVENTFD),
275	CAP_ENTRY__L(KVM_CAP_HYPERV_TLBFLUSH),
276	CAP_ENTRY__L(KVM_CAP_S390_HPAGE_1M),
277	CAP_ENTRY__L(KVM_CAP_NESTED_STATE),
278	CAP_ENTRY__L(KVM_CAP_ARM_INJECT_SERROR_ESR),
279	CAP_ENTRY__L(KVM_CAP_MSR_PLATFORM_INFO),
280	CAP_ENTRY__L(KVM_CAP_PPC_NESTED_HV), /* 160 */
281	CAP_ENTRY__L(KVM_CAP_HYPERV_SEND_IPI),
282	CAP_ENTRY__L(KVM_CAP_COALESCED_PIO),
283	CAP_ENTRY__L(KVM_CAP_HYPERV_ENLIGHTENED_VMCS),
284	CAP_ENTRY__L(KVM_CAP_EXCEPTION_PAYLOAD),
285	CAP_ENTRY__L(KVM_CAP_ARM_VM_IPA_SIZE),
286	CAP_ENTRY__L(KVM_CAP_MANUAL_DIRTY_LOG_PROTECT),
287	CAP_ENTRY__L(KVM_CAP_HYPERV_CPUID),
288	CAP_ENTRY__L(KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2),
289	CAP_ENTRY__L(KVM_CAP_PPC_IRQ_XIVE),
290	CAP_ENTRY__L(KVM_CAP_ARM_SVE), /* 170 */
291	CAP_ENTRY__L(KVM_CAP_ARM_PTRAUTH_ADDRESS),
292	CAP_ENTRY__L(KVM_CAP_ARM_PTRAUTH_GENERIC),
293	CAP_ENTRY__L(KVM_CAP_PMU_EVENT_FILTER),
294	CAP_ENTRY__L(KVM_CAP_ARM_IRQ_LINE_LAYOUT_2),
295	CAP_ENTRY__L(KVM_CAP_HYPERV_DIRECT_TLBFLUSH),
296	CAP_ENTRY__L(KVM_CAP_PPC_GUEST_DEBUG_SSTEP),
297	CAP_ENTRY__L(KVM_CAP_ARM_NISV_TO_USER),
298	CAP_ENTRY__L(KVM_CAP_ARM_INJECT_EXT_DABT),
299	CAP_ENTRY__L(KVM_CAP_S390_VCPU_RESETS),
300	CAP_ENTRY__L(KVM_CAP_S390_PROTECTED), /* 180 */
301	CAP_ENTRY__L(KVM_CAP_PPC_SECURE_GUEST),
302	CAP_ENTRY__L(KVM_CAP_HALT_POLL),
303	CAP_ENTRY__L(KVM_CAP_ASYNC_PF_INT),
304	CAP_ENTRY__L(KVM_CAP_LAST_CPU),
305	CAP_ENTRY__L(KVM_CAP_SMALLER_MAXPHYADDR),
306	CAP_ENTRY__L(KVM_CAP_S390_DIAG318),
307	CAP_ENTRY__L(KVM_CAP_STEAL_TIME),
308	CAP_ENTRY_ML(KVM_CAP_X86_USER_SPACE_MSR), /* (since 5.10) */
309	CAP_ENTRY_ML(KVM_CAP_X86_MSR_FILTER),
310	CAP_ENTRY__L(KVM_CAP_ENFORCE_PV_FEATURE_CPUID), /* 190 */
311	CAP_ENTRY__L(KVM_CAP_SYS_HYPERV_CPUID),
312	CAP_ENTRY__L(KVM_CAP_DIRTY_LOG_RING),
313	CAP_ENTRY__L(KVM_CAP_X86_BUS_LOCK_EXIT),
314	CAP_ENTRY__L(KVM_CAP_PPC_DAWR1),
315	CAP_ENTRY__L(KVM_CAP_SET_GUEST_DEBUG2),
316	CAP_ENTRY__L(KVM_CAP_SGX_ATTRIBUTE),
317	CAP_ENTRY__L(KVM_CAP_VM_COPY_ENC_CONTEXT_FROM),
318	CAP_ENTRY__L(KVM_CAP_PTP_KVM),
319	CAP_ENTRY__U(199),
320	CAP_ENTRY__U(200),
321	CAP_ENTRY__U(201),
322	CAP_ENTRY__U(202),
323	CAP_ENTRY__U(203),
324	CAP_ENTRY__U(204),
325	CAP_ENTRY__U(205),
326	CAP_ENTRY__U(206),
327	CAP_ENTRY__U(207),
328	CAP_ENTRY__U(208),
329	CAP_ENTRY__U(209),
330	CAP_ENTRY__U(210),
331	CAP_ENTRY__U(211),
332	CAP_ENTRY__U(212),
333	CAP_ENTRY__U(213),
334	CAP_ENTRY__U(214),
335	CAP_ENTRY__U(215),
336	CAP_ENTRY__U(216),
337	};
338
339	LogRel(("NEM: KVM capabilities (system):\n"));
340	int rcRet = VINF_SUCCESS;
341	for (unsigned i = 0; i < RT_ELEMENTS(s_aCaps); i++)
342	{
343	int rc = ioctl(pVM->nem.s.fdVm, KVM_CHECK_EXTENSION, s_aCaps[i].iCap);
344	if (rc >= 10)
345	LogRel(("NEM: %36s: %#x (%d)\n", s_aCaps[i].pszName, rc, rc));
346	else if (rc >= 0)
347	LogRel(("NEM: %36s: %d\n", s_aCaps[i].pszName, rc));
348	else
349	LogRel(("NEM: %s failed: %d/%d\n", s_aCaps[i].pszName, rc, errno));
350	switch (s_aCaps[i].cbNem)
351	{
352	case 0:
353	break;
354	case 1:
355	{
356	uint8_t puValue = (uint8_t )&pVM->nem.padding[s_aCaps[i].offNem];
357	AssertReturn(s_aCaps[i].offNem <= sizeof(NEM) - sizeof(*puValue), VERR_NEM_IPE_0);
358	*puValue = (uint8_t)rc;
359	AssertLogRelMsg((int)*puValue == rc, ("%s: %#x\n", s_aCaps[i].pszName, rc));
360	break;
361	}
362	case 2:
363	{
364	uint16_t puValue = (uint16_t )&pVM->nem.padding[s_aCaps[i].offNem];
365	AssertReturn(s_aCaps[i].offNem <= sizeof(NEM) - sizeof(*puValue), VERR_NEM_IPE_0);
366	*puValue = (uint16_t)rc;
367	AssertLogRelMsg((int)*puValue == rc, ("%s: %#x\n", s_aCaps[i].pszName, rc));
368	break;
369	}
370	case 4:
371	{
372	uint32_t puValue = (uint32_t )&pVM->nem.padding[s_aCaps[i].offNem];
373	AssertReturn(s_aCaps[i].offNem <= sizeof(NEM) - sizeof(*puValue), VERR_NEM_IPE_0);
374	*puValue = (uint32_t)rc;
375	AssertLogRelMsg((int)*puValue == rc, ("%s: %#x\n", s_aCaps[i].pszName, rc));
376	break;
377	}
378	default:
379	rcRet = RTErrInfoSetF(pErrInfo, VERR_NEM_IPE_0, "s_aCaps[%u] is bad: cbNem=%#x - %s",
380	i, s_aCaps[i].pszName, s_aCaps[i].cbNem);
381	AssertFailedReturn(rcRet);
382	}
383
384	/*
385	* Is a require non-zero entry zero or failing?
386	*/
387	if (s_aCaps[i].fReqNonZero && rc <= 0)
388	rcRet = RTERRINFO_LOG_REL_ADD_F(pErrInfo, VERR_NEM_MISSING_FEATURE,
389	"Required capability '%s' is missing!", s_aCaps[i].pszName);
390	}
391
392	/*
393	* Get per VCpu KVM_RUN MMAP area size.
394	*/
395	int rc = ioctl(pVM->nem.s.fdKvm, KVM_GET_VCPU_MMAP_SIZE, 0UL);
396	if ((unsigned)rc < _64M)
397	{
398	pVM->nem.s.cbVCpuMmap = (uint32_t)rc;
399	LogRel(("NEM: %36s: %#x (%d)\n", "KVM_GET_VCPU_MMAP_SIZE", rc, rc));
400	}
401	else if (rc < 0)
402	rcRet = RTERRINFO_LOG_REL_ADD_F(pErrInfo, VERR_NEM_MISSING_FEATURE, "KVM_GET_VCPU_MMAP_SIZE failed: %d", errno);
403	else
404	rcRet = RTERRINFO_LOG_REL_ADD_F(pErrInfo, VERR_NEM_INIT_FAILED, "Odd KVM_GET_VCPU_MMAP_SIZE value: %#x (%d)", rc, rc);
405
406	/*
407	* Init the slot ID bitmap.
408	*/
409	ASMBitSet(&pVM->nem.s.bmSlotIds[0], 0); /* don't use slot 0 */
410	if (pVM->nem.s.cMaxMemSlots < _32K)
411	ASMBitSetRange(&pVM->nem.s.bmSlotIds[0], pVM->nem.s.cMaxMemSlots, _32K);
412	ASMBitSet(&pVM->nem.s.bmSlotIds[0], _32K - 1); /* don't use the last slot */
413
414	return rcRet;
415	}
416
417
418	/**
419	* Does the early setup of a KVM VM.
420	*
421	* @returns VBox status code.
422	* @param pVM The cross context VM structure.
423	* @param pErrInfo Where to always return error info.
424	*/
425	static int nemR3LnxInitSetupVm(PVM pVM, PRTERRINFO pErrInfo)
426	{
427	AssertReturn(pVM->nem.s.fdVm != -1, RTErrInfoSet(pErrInfo, VERR_WRONG_ORDER, "Wrong initalization order"));
428
429	/*
430	* Enable user space MSRs and let us check everything KVM cannot handle.
431	* We will set up filtering later when ring-3 init has completed.
432	*/
433	struct kvm_enable_cap CapEn =
434	{
435	KVM_CAP_X86_USER_SPACE_MSR, 0,
436	{ KVM_MSR_EXIT_REASON_FILTER \| KVM_MSR_EXIT_REASON_UNKNOWN \| KVM_MSR_EXIT_REASON_INVAL, 0, 0, 0}
437	};
438	int rcLnx = ioctl(pVM->nem.s.fdVm, KVM_ENABLE_CAP, &CapEn);
439	if (rcLnx == -1)
440	return RTErrInfoSetF(pErrInfo, VERR_NEM_VM_CREATE_FAILED, "Failed to enable KVM_CAP_X86_USER_SPACE_MSR failed: %u", errno);
441
442	/*
443	* Create the VCpus.
444	*/
445	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
446	{
447	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
448
449	/* Create it. */
450	pVCpu->nem.s.fdVCpu = ioctl(pVM->nem.s.fdVm, KVM_CREATE_VCPU, (unsigned long)idCpu);
451	if (pVCpu->nem.s.fdVCpu < 0)
452	return RTErrInfoSetF(pErrInfo, VERR_NEM_VM_CREATE_FAILED, "KVM_CREATE_VCPU failed for VCpu #%u: %d", idCpu, errno);
453
454	/* Map the KVM_RUN area. */
455	pVCpu->nem.s.pRun = (struct kvm_run *)mmap(NULL, pVM->nem.s.cbVCpuMmap, PROT_READ \| PROT_WRITE, MAP_SHARED,
456	pVCpu->nem.s.fdVCpu, 0 /offset/);
457	if ((void *)pVCpu->nem.s.pRun == MAP_FAILED)
458	return RTErrInfoSetF(pErrInfo, VERR_NEM_VM_CREATE_FAILED, "mmap failed for VCpu #%u: %d", idCpu, errno);
459
460	/* We want all x86 registers and events on each exit. */
461	pVCpu->nem.s.pRun->kvm_valid_regs = KVM_SYNC_X86_REGS \| KVM_SYNC_X86_SREGS \| KVM_SYNC_X86_EVENTS;
462	}
463	return VINF_SUCCESS;
464	}
465
466
467	/** @callback_method_impl{FNVMMEMTRENDEZVOUS} */
468	static DECLCALLBACK(VBOXSTRICTRC) nemR3LnxFixThreadPoke(PVM pVM, PVMCPU pVCpu, void *pvUser)
469	{
470	RT_NOREF(pVM, pvUser);
471	int rc = RTThreadControlPokeSignal(pVCpu->hThread, true /fEnable/);
472	AssertLogRelRC(rc);
473	return VINF_SUCCESS;
474	}
475
476
477	/**
478	* Try initialize the native API.
479	*
480	* This may only do part of the job, more can be done in
481	* nemR3NativeInitAfterCPUM() and nemR3NativeInitCompleted().
482	*
483	* @returns VBox status code.
484	* @param pVM The cross context VM structure.
485	* @param fFallback Whether we're in fallback mode or use-NEM mode. In
486	* the latter we'll fail if we cannot initialize.
487	* @param fForced Whether the HMForced flag is set and we should
488	* fail if we cannot initialize.
489	*/
490	int nemR3NativeInit(PVM pVM, bool fFallback, bool fForced)
491	{
492	RT_NOREF(pVM, fFallback, fForced);
493	/*
494	* Some state init.
495	*/
496	pVM->nem.s.fdKvm = -1;
497	pVM->nem.s.fdVm = -1;
498	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
499	{
500	PNEMCPU pNemCpu = &pVM->apCpusR3[idCpu]->nem.s;
501	pNemCpu->fdVCpu = -1;
502	}
503
504	/*
505	* Error state.
506	* The error message will be non-empty on failure and 'rc' will be set too.
507	*/
508	RTERRINFOSTATIC ErrInfo;
509	PRTERRINFO pErrInfo = RTErrInfoInitStatic(&ErrInfo);
510
511	/*
512	* Open kvm subsystem so we can issue system ioctls.
513	*/
514	int rc;
515	int fdKvm = open("/dev/kvm", O_RDWR \| O_CLOEXEC);
516	if (fdKvm >= 0)
517	{
518	pVM->nem.s.fdKvm = fdKvm;
519
520	/*
521	* Create an empty VM since it is recommended we check capabilities on
522	* the VM rather than the system descriptor.
523	*/
524	int fdVm = ioctl(fdKvm, KVM_CREATE_VM, 0UL /* Type must be zero on x86 */);
525	if (fdVm >= 0)
526	{
527	pVM->nem.s.fdVm = fdVm;
528
529	/*
530	* Check capabilities.
531	*/
532	rc = nemR3LnxInitCheckCapabilities(pVM, pErrInfo);
533	if (RT_SUCCESS(rc))
534	{
535	/*
536	* Set up the VM (more on this later).
537	*/
538	rc = nemR3LnxInitSetupVm(pVM, pErrInfo);
539	if (RT_SUCCESS(rc))
540	{
541	/*
542	* Set ourselves as the execution engine and make config adjustments.
543	*/
544	VM_SET_MAIN_EXECUTION_ENGINE(pVM, VM_EXEC_ENGINE_NATIVE_API);
545	Log(("NEM: Marked active!\n"));
546	PGMR3EnableNemMode(pVM);
547
548	/*
549	* Register release statistics
550	*/
551	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
552	{
553	PNEMCPU pNemCpu = &pVM->apCpusR3[idCpu]->nem.s;
554	STAMR3RegisterF(pVM, &pNemCpu->StatImportOnDemand, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of on-demand state imports", "/NEM/CPU%u/ImportOnDemand", idCpu);
555	STAMR3RegisterF(pVM, &pNemCpu->StatImportOnReturn, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of state imports on loop return", "/NEM/CPU%u/ImportOnReturn", idCpu);
556	STAMR3RegisterF(pVM, &pNemCpu->StatImportOnReturnSkipped, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of skipped state imports on loop return", "/NEM/CPU%u/ImportOnReturnSkipped", idCpu);
557	STAMR3RegisterF(pVM, &pNemCpu->StatImportPendingInterrupt, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times an interrupt was pending when importing from KVM", "/NEM/CPU%u/ImportPendingInterrupt", idCpu);
558	STAMR3RegisterF(pVM, &pNemCpu->StatExportPendingInterrupt, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times an interrupt was pending when exporting to KVM", "/NEM/CPU%u/ExportPendingInterrupt", idCpu);
559	STAMR3RegisterF(pVM, &pNemCpu->StatFlushExitOnReturn, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times a KVM_EXIT_IO or KVM_EXIT_MMIO was flushed before returning to EM", "/NEM/CPU%u/FlushExitOnReturn", idCpu);
560	STAMR3RegisterF(pVM, &pNemCpu->StatFlushExitOnReturn1Loop, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times a KVM_EXIT_IO or KVM_EXIT_MMIO was flushed before returning to EM", "/NEM/CPU%u/FlushExitOnReturn-01-loop", idCpu);
561	STAMR3RegisterF(pVM, &pNemCpu->StatFlushExitOnReturn2Loops, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times a KVM_EXIT_IO or KVM_EXIT_MMIO was flushed before returning to EM", "/NEM/CPU%u/FlushExitOnReturn-02-loops", idCpu);
562	STAMR3RegisterF(pVM, &pNemCpu->StatFlushExitOnReturn3Loops, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times a KVM_EXIT_IO or KVM_EXIT_MMIO was flushed before returning to EM", "/NEM/CPU%u/FlushExitOnReturn-03-loops", idCpu);
563	STAMR3RegisterF(pVM, &pNemCpu->StatFlushExitOnReturn4PlusLoops, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times a KVM_EXIT_IO or KVM_EXIT_MMIO was flushed before returning to EM", "/NEM/CPU%u/FlushExitOnReturn-04-to-7-loops", idCpu);
564	STAMR3RegisterF(pVM, &pNemCpu->StatQueryCpuTick, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of TSC queries", "/NEM/CPU%u/QueryCpuTick", idCpu);
565	STAMR3RegisterF(pVM, &pNemCpu->StatExitTotal, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "All exits", "/NEM/CPU%u/Exit", idCpu);
566	STAMR3RegisterF(pVM, &pNemCpu->StatExitIo, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_IO", "/NEM/CPU%u/Exit/Io", idCpu);
567	STAMR3RegisterF(pVM, &pNemCpu->StatExitMmio, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_MMIO", "/NEM/CPU%u/Exit/Mmio", idCpu);
568	STAMR3RegisterF(pVM, &pNemCpu->StatExitSetTpr, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_SET_TRP", "/NEM/CPU%u/Exit/SetTpr", idCpu);
569	STAMR3RegisterF(pVM, &pNemCpu->StatExitTprAccess, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_TPR_ACCESS", "/NEM/CPU%u/Exit/TprAccess", idCpu);
570	STAMR3RegisterF(pVM, &pNemCpu->StatExitRdMsr, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_RDMSR", "/NEM/CPU%u/Exit/RdMsr", idCpu);
571	STAMR3RegisterF(pVM, &pNemCpu->StatExitWrMsr, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_WRMSR", "/NEM/CPU%u/Exit/WrMsr", idCpu);
572	STAMR3RegisterF(pVM, &pNemCpu->StatExitIrqWindowOpen, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_IRQ_WINDOWS_OPEN", "/NEM/CPU%u/Exit/IrqWindowOpen", idCpu);
573	STAMR3RegisterF(pVM, &pNemCpu->StatExitHalt, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_HLT", "/NEM/CPU%u/Exit/Hlt", idCpu);
574	STAMR3RegisterF(pVM, &pNemCpu->StatExitIntr, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_INTR", "/NEM/CPU%u/Exit/Intr", idCpu);
575	STAMR3RegisterF(pVM, &pNemCpu->StatExitHypercall, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_HYPERCALL", "/NEM/CPU%u/Exit/Hypercall", idCpu);
576	STAMR3RegisterF(pVM, &pNemCpu->StatExitDebug, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_DEBUG", "/NEM/CPU%u/Exit/Debug", idCpu);
577	STAMR3RegisterF(pVM, &pNemCpu->StatExitBusLock, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_BUS_LOCK", "/NEM/CPU%u/Exit/BusLock", idCpu);
578	STAMR3RegisterF(pVM, &pNemCpu->StatExitInternalErrorEmulation, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_INTERNAL_ERROR/EMULATION", "/NEM/CPU%u/Exit/InternalErrorEmulation", idCpu);
579	STAMR3RegisterF(pVM, &pNemCpu->StatExitInternalErrorFatal, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "KVM_EXIT_INTERNAL_ERROR/*", "/NEM/CPU%u/Exit/InternalErrorFatal", idCpu);
580	}
581
582	/*
583	* Success.
584	*/
585	return VINF_SUCCESS;
586	}
587
588	/*
589	* Bail out.
590	*/
591	}
592	close(fdVm);
593	pVM->nem.s.fdVm = -1;
594	}
595	else
596	rc = RTErrInfoSetF(pErrInfo, VERR_NEM_VM_CREATE_FAILED, "KVM_CREATE_VM failed: %u", errno);
597	close(fdKvm);
598	pVM->nem.s.fdKvm = -1;
599	}
600	else if (errno == EACCES)
601	rc = RTErrInfoSet(pErrInfo, VERR_ACCESS_DENIED, "Do not have access to open /dev/kvm for reading & writing.");
602	else if (errno == ENOENT)
603	rc = RTErrInfoSet(pErrInfo, VERR_NOT_SUPPORTED, "KVM is not availble (/dev/kvm does not exist)");
604	else
605	rc = RTErrInfoSetF(pErrInfo, RTErrConvertFromErrno(errno), "Failed to open '/dev/kvm': %u", errno);
606
607	/*
608	* We only fail if in forced mode, otherwise just log the complaint and return.
609	*/
610	Assert(RTErrInfoIsSet(pErrInfo));
611	if ( (fForced \|\| !fFallback)
612	&& pVM->bMainExecutionEngine != VM_EXEC_ENGINE_NATIVE_API)
613	return VMSetError(pVM, RT_SUCCESS_NP(rc) ? VERR_NEM_NOT_AVAILABLE : rc, RT_SRC_POS, "%s", pErrInfo->pszMsg);
614	LogRel(("NEM: Not available: %s\n", pErrInfo->pszMsg));
615	return VINF_SUCCESS;
616	}
617
618
619	/**
620	* This is called after CPUMR3Init is done.
621	*
622	* @returns VBox status code.
623	* @param pVM The VM handle..
624	*/
625	int nemR3NativeInitAfterCPUM(PVM pVM)
626	{
627	/*
628	* Validate sanity.
629	*/
630	AssertReturn(pVM->nem.s.fdKvm >= 0, VERR_WRONG_ORDER);
631	AssertReturn(pVM->nem.s.fdVm >= 0, VERR_WRONG_ORDER);
632	AssertReturn(pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API, VERR_WRONG_ORDER);
633
634	/** @todo */
635
636	return VINF_SUCCESS;
637	}
638
639
640	/**
641	* Update the CPUID leaves for a VCPU.
642	*
643	* The KVM_SET_CPUID2 call replaces any previous leaves, so we have to redo
644	* everything when there really just are single bit changes. That said, it
645	* looks like KVM update the XCR/XSAVE related stuff as well as the APIC enabled
646	* bit(s), so it should suffice if we do this at startup, I hope.
647	*/
648	static int nemR3LnxUpdateCpuIdsLeaves(PVM pVM, PVMCPU pVCpu)
649	{
650	uint32_t cLeaves = 0;
651	PCCPUMCPUIDLEAF const paLeaves = CPUMR3CpuIdGetPtr(pVM, &cLeaves);
652	struct kvm_cpuid2 pReq = (struct kvm_cpuid2 )alloca(RT_UOFFSETOF_DYN(struct kvm_cpuid2, entries[cLeaves + 2]));
653
654	pReq->nent = cLeaves;
655	pReq->padding = 0;
656
657	for (uint32_t i = 0; i < cLeaves; i++)
658	{
659	CPUMGetGuestCpuId(pVCpu, paLeaves[i].uLeaf, paLeaves[i].uSubLeaf, -1 /f64BitMode/,
660	&pReq->entries[i].eax,
661	&pReq->entries[i].ebx,
662	&pReq->entries[i].ecx,
663	&pReq->entries[i].edx);
664	pReq->entries[i].function = paLeaves[i].uLeaf;
665	pReq->entries[i].index = paLeaves[i].uSubLeaf;
666	pReq->entries[i].flags = !paLeaves[i].fSubLeafMask ? 0 : KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
667	pReq->entries[i].padding[0] = 0;
668	pReq->entries[i].padding[1] = 0;
669	pReq->entries[i].padding[2] = 0;
670	}
671
672	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_CPUID2, pReq);
673	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d cLeaves=%#x\n", rcLnx, errno, cLeaves), RTErrConvertFromErrno(errno));
674
675	return VINF_SUCCESS;
676	}
677
678
679	int nemR3NativeInitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
680	{
681	/*
682	* Make RTThreadPoke work again (disabled for avoiding unnecessary
683	* critical section issues in ring-0).
684	*/
685	if (enmWhat == VMINITCOMPLETED_RING3)
686	VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE, nemR3LnxFixThreadPoke, NULL);
687
688	/*
689	* Configure CPUIDs after ring-3 init has been done.
690	*/
691	if (enmWhat == VMINITCOMPLETED_RING3)
692	{
693	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
694	{
695	int rc = nemR3LnxUpdateCpuIdsLeaves(pVM, pVM->apCpusR3[idCpu]);
696	AssertRCReturn(rc, rc);
697	}
698	}
699
700	/*
701	* Configure MSRs after ring-3 init is done.
702	*
703	* We only need to tell KVM which MSRs it can handle, as we already
704	* requested KVM_MSR_EXIT_REASON_FILTER, KVM_MSR_EXIT_REASON_UNKNOWN
705	* and KVM_MSR_EXIT_REASON_INVAL in nemR3LnxInitSetupVm, and here we
706	* will use KVM_MSR_FILTER_DEFAULT_DENY. So, all MSRs w/o a 1 in the
707	* bitmaps should be deferred to ring-3.
708	*/
709	if (enmWhat == VMINITCOMPLETED_RING3)
710	{
711	struct kvm_msr_filter MsrFilters = {0}; /* Structure with a couple of implicit paddings on 64-bit systems. */
712	MsrFilters.flags = KVM_MSR_FILTER_DEFAULT_DENY;
713
714	unsigned iRange = 0;
715	#define MSR_RANGE_BEGIN(a_uBase, a_uEnd, a_fFlags) \
716	AssertCompile(0x3000 <= KVM_MSR_FILTER_MAX_BITMAP_SIZE * 8); \
717	uint64_t RT_CONCAT(bm, a_uBase)[0x3000 / 64] = {0}; \
718	do { \
719	uint64_t * const pbm = RT_CONCAT(bm, a_uBase); \
720	uint32_t const uBase = UINT32_C(a_uBase); \
721	uint32_t const cMsrs = UINT32_C(a_uEnd) - UINT32_C(a_uBase); \
722	MsrFilters.ranges[iRange].base = UINT32_C(a_uBase); \
723	MsrFilters.ranges[iRange].nmsrs = cMsrs; \
724	MsrFilters.ranges[iRange].flags = (a_fFlags); \
725	MsrFilters.ranges[iRange].bitmap = (uint8_t *)&RT_CONCAT(bm, a_uBase)[0]
726	#define MSR_RANGE_ADD(a_Msr) \
727	do { Assert((uint32_t)(a_Msr) - uBase < cMsrs); ASMBitSet(pbm, (uint32_t)(a_Msr) - uBase); } while (0)
728	#define MSR_RANGE_END(a_cMinMsrs) \
729	/* optimize the range size before closing: */ \
730	uint32_t cBitmap = cMsrs / 64; \
731	while (cBitmap > ((a_cMinMsrs) + 63 / 64) && pbm[cBitmap - 1] == 0) \
732	cBitmap -= 1; \
733	MsrFilters.ranges[iRange].nmsrs = cBitmap * 64; \
734	iRange++; \
735	} while (0)
736
737	/* 1st Intel range: 0000_0000 to 0000_3000. */
738	MSR_RANGE_BEGIN(0x00000000, 0x00003000, KVM_MSR_FILTER_READ \| KVM_MSR_FILTER_WRITE);
739	MSR_RANGE_ADD(MSR_IA32_TSC);
740	MSR_RANGE_ADD(MSR_IA32_SYSENTER_CS);
741	MSR_RANGE_ADD(MSR_IA32_SYSENTER_ESP);
742	MSR_RANGE_ADD(MSR_IA32_SYSENTER_EIP);
743	MSR_RANGE_ADD(MSR_IA32_CR_PAT);
744	/** @todo more? */
745	MSR_RANGE_END(64);
746
747	/* 1st AMD range: c000_0000 to c000_3000 */
748	MSR_RANGE_BEGIN(0xc0000000, 0xc0003000, KVM_MSR_FILTER_READ \| KVM_MSR_FILTER_WRITE);
749	MSR_RANGE_ADD(MSR_K6_EFER);
750	MSR_RANGE_ADD(MSR_K6_STAR);
751	MSR_RANGE_ADD(MSR_K8_GS_BASE);
752	MSR_RANGE_ADD(MSR_K8_KERNEL_GS_BASE);
753	MSR_RANGE_ADD(MSR_K8_LSTAR);
754	MSR_RANGE_ADD(MSR_K8_CSTAR);
755	MSR_RANGE_ADD(MSR_K8_SF_MASK);
756	MSR_RANGE_ADD(MSR_K8_TSC_AUX);
757	/** @todo add more? */
758	MSR_RANGE_END(64);
759
760	/** @todo Specify other ranges too? Like hyper-V and KVM to make sure we get
761	* the MSR requests instead of KVM. */
762
763	int rcLnx = ioctl(pVM->nem.s.fdVm, KVM_X86_SET_MSR_FILTER, &MsrFilters);
764	if (rcLnx == -1)
765	return VMSetError(pVM, VERR_NEM_VM_CREATE_FAILED, RT_SRC_POS,
766	"Failed to enable KVM_X86_SET_MSR_FILTER failed: %u", errno);
767	}
768
769	return VINF_SUCCESS;
770	}
771
772
773	int nemR3NativeTerm(PVM pVM)
774	{
775	/*
776	* Per-cpu data
777	*/
778	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
779	{
780	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
781
782	if (pVCpu->nem.s.fdVCpu != -1)
783	{
784	close(pVCpu->nem.s.fdVCpu);
785	pVCpu->nem.s.fdVCpu = -1;
786	}
787	if (pVCpu->nem.s.pRun)
788	{
789	munmap(pVCpu->nem.s.pRun, pVM->nem.s.cbVCpuMmap);
790	pVCpu->nem.s.pRun = NULL;
791	}
792	}
793
794	/*
795	* Global data.
796	*/
797	if (pVM->nem.s.fdVm != -1)
798	{
799	close(pVM->nem.s.fdVm);
800	pVM->nem.s.fdVm = -1;
801	}
802
803	if (pVM->nem.s.fdKvm != -1)
804	{
805	close(pVM->nem.s.fdKvm);
806	pVM->nem.s.fdKvm = -1;
807	}
808	return VINF_SUCCESS;
809	}
810
811
812	/**
813	* VM reset notification.
814	*
815	* @param pVM The cross context VM structure.
816	*/
817	void nemR3NativeReset(PVM pVM)
818	{
819	RT_NOREF(pVM);
820	}
821
822
823	/**
824	* Reset CPU due to INIT IPI or hot (un)plugging.
825	*
826	* @param pVCpu The cross context virtual CPU structure of the CPU being
827	* reset.
828	* @param fInitIpi Whether this is the INIT IPI or hot (un)plugging case.
829	*/
830	void nemR3NativeResetCpu(PVMCPU pVCpu, bool fInitIpi)
831	{
832	RT_NOREF(pVCpu, fInitIpi);
833	}
834
835
836	/*********************************************************************************************************************************
837	* Memory management *
838	*********************************************************************************************************************************/
839
840
841	/**
842	* Allocates a memory slot ID.
843	*
844	* @returns Slot ID on success, UINT16_MAX on failure.
845	*/
846	static uint16_t nemR3LnxMemSlotIdAlloc(PVM pVM)
847	{
848	/* Use the hint first. */
849	uint16_t idHint = pVM->nem.s.idPrevSlot;
850	if (idHint < _32K - 1)
851	{
852	int32_t idx = ASMBitNextClear(&pVM->nem.s.bmSlotIds, _32K, idHint);
853	Assert(idx < _32K);
854	if (idx > 0 && !ASMAtomicBitTestAndSet(&pVM->nem.s.bmSlotIds, idx))
855	return pVM->nem.s.idPrevSlot = (uint16_t)idx;
856	}
857
858	/*
859	* Search the whole map from the start.
860	*/
861	int32_t idx = ASMBitFirstClear(&pVM->nem.s.bmSlotIds, _32K);
862	Assert(idx < _32K);
863	if (idx > 0 && !ASMAtomicBitTestAndSet(&pVM->nem.s.bmSlotIds, idx))
864	return pVM->nem.s.idPrevSlot = (uint16_t)idx;
865
866	Assert(idx < 0 /shouldn't trigger unless there is a race /);
867	return UINT16_MAX; /* caller is expected to assert. */
868	}
869
870
871	/**
872	* Frees a memory slot ID
873	*/
874	static void nemR3LnxMemSlotIdFree(PVM pVM, uint16_t idSlot)
875	{
876	if (RT_LIKELY(idSlot < _32K && ASMAtomicBitTestAndClear(&pVM->nem.s.bmSlotIds, idSlot)))
877	{ /likely/ }
878	else
879	AssertMsgFailed(("idSlot=%u (%#x)\n", idSlot, idSlot));
880	}
881
882
883
884	VMMR3_INT_DECL(int) NEMR3NotifyPhysRamRegister(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, void *pvR3,
885	uint8_t pu2State, uint32_t puNemRange)
886	{
887	uint16_t idSlot = nemR3LnxMemSlotIdAlloc(pVM);
888	AssertLogRelReturn(idSlot < _32K, VERR_NEM_MAP_PAGES_FAILED);
889
890	Log5(("NEMR3NotifyPhysRamRegister: %RGp LB %RGp, pvR3=%p pu2State=%p (%d) puNemRange=%p (%d) - idSlot=%#x\n",
891	GCPhys, cb, pvR3, pu2State, pu2State, puNemRange, *puNemRange, idSlot));
892
893	struct kvm_userspace_memory_region Region;
894	Region.slot = idSlot;
895	Region.flags = 0;
896	Region.guest_phys_addr = GCPhys;
897	Region.memory_size = cb;
898	Region.userspace_addr = (uintptr_t)pvR3;
899
900	int rc = ioctl(pVM->nem.s.fdVm, KVM_SET_USER_MEMORY_REGION, &Region);
901	if (rc == 0)
902	{
903	*pu2State = 0;
904	*puNemRange = idSlot;
905	return VINF_SUCCESS;
906	}
907
908	LogRel(("NEMR3NotifyPhysRamRegister: %RGp LB %RGp, pvR3=%p, idSlot=%#x failed: %u/%u\n", GCPhys, cb, pvR3, idSlot, rc, errno));
909	nemR3LnxMemSlotIdFree(pVM, idSlot);
910	return VERR_NEM_MAP_PAGES_FAILED;
911	}
912
913
914	VMMR3_INT_DECL(bool) NEMR3IsMmio2DirtyPageTrackingSupported(PVM pVM)
915	{
916	RT_NOREF(pVM);
917	return true;
918	}
919
920
921	VMMR3_INT_DECL(int) NEMR3NotifyPhysMmioExMapEarly(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t fFlags,
922	void pvRam, void pvMmio2, uint8_t pu2State, uint32_t puNemRange)
923	{
924	Log5(("NEMR3NotifyPhysMmioExMapEarly: %RGp LB %RGp fFlags=%#x pvRam=%p pvMmio2=%p pu2State=%p (%d) puNemRange=%p (%#x)\n",
925	GCPhys, cb, fFlags, pvRam, pvMmio2, pu2State, pu2State, puNemRange, puNemRange ? puNemRange : UINT32_MAX));
926	RT_NOREF(pvRam);
927
928	if (fFlags & NEM_NOTIFY_PHYS_MMIO_EX_F_REPLACE)
929	{
930	/** @todo implement splitting and whatnot of ranges if we want to be 100%
931	* conforming (just modify RAM registrations in MM.cpp to test). */
932	AssertLogRelMsgFailedReturn(("%RGp LB %RGp fFlags=%#x pvRam=%p pvMmio2=%p\n", GCPhys, cb, fFlags, pvRam, pvMmio2),
933	VERR_NEM_MAP_PAGES_FAILED);
934	}
935
936	/*
937	* Register MMIO2.
938	*/
939	if (fFlags & NEM_NOTIFY_PHYS_MMIO_EX_F_MMIO2)
940	{
941	AssertReturn(pvMmio2, VERR_NEM_MAP_PAGES_FAILED);
942	AssertReturn(puNemRange, VERR_NEM_MAP_PAGES_FAILED);
943
944	uint16_t idSlot = nemR3LnxMemSlotIdAlloc(pVM);
945	AssertLogRelReturn(idSlot < _32K, VERR_NEM_MAP_PAGES_FAILED);
946
947	struct kvm_userspace_memory_region Region;
948	Region.slot = idSlot;
949	Region.flags = fFlags & NEM_NOTIFY_PHYS_MMIO_EX_F_TRACK_DIRTY_PAGES ? KVM_MEM_LOG_DIRTY_PAGES : 0;
950	Region.guest_phys_addr = GCPhys;
951	Region.memory_size = cb;
952	Region.userspace_addr = (uintptr_t)pvMmio2;
953
954	int rc = ioctl(pVM->nem.s.fdVm, KVM_SET_USER_MEMORY_REGION, &Region);
955	if (rc == 0)
956	{
957	*pu2State = 0;
958	*puNemRange = idSlot;
959	Log5(("NEMR3NotifyPhysMmioExMapEarly: %RGp LB %RGp fFlags=%#x pvMmio2=%p - idSlot=%#x\n",
960	GCPhys, cb, fFlags, pvMmio2, idSlot));
961	return VINF_SUCCESS;
962	}
963
964	nemR3LnxMemSlotIdFree(pVM, idSlot);
965	AssertLogRelMsgFailedReturn(("%RGp LB %RGp fFlags=%#x, pvMmio2=%p, idSlot=%#x failed: %u/%u\n",
966	GCPhys, cb, fFlags, pvMmio2, idSlot, errno, rc),
967	VERR_NEM_MAP_PAGES_FAILED);
968	}
969
970	/* MMIO, don't care. */
971	*pu2State = 0;
972	*puNemRange = UINT32_MAX;
973	return VINF_SUCCESS;
974	}
975
976
977	VMMR3_INT_DECL(int) NEMR3NotifyPhysMmioExMapLate(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t fFlags,
978	void pvRam, void pvMmio2, uint32_t *puNemRange)
979	{
980	RT_NOREF(pVM, GCPhys, cb, fFlags, pvRam, pvMmio2, puNemRange);
981	return VINF_SUCCESS;
982	}
983
984
985	VMMR3_INT_DECL(int) NEMR3NotifyPhysMmioExUnmap(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t fFlags, void *pvRam,
986	void pvMmio2, uint8_t pu2State, uint32_t *puNemRange)
987	{
988	Log5(("NEMR3NotifyPhysMmioExUnmap: %RGp LB %RGp fFlags=%#x pvRam=%p pvMmio2=%p pu2State=%p puNemRange=%p (%#x)\n",
989	GCPhys, cb, fFlags, pvRam, pvMmio2, pu2State, puNemRange, *puNemRange));
990	RT_NOREF(pVM, GCPhys, cb, fFlags, pvRam, pvMmio2, pu2State);
991
992	if (fFlags & NEM_NOTIFY_PHYS_MMIO_EX_F_REPLACE)
993	{
994	/** @todo implement splitting and whatnot of ranges if we want to be 100%
995	* conforming (just modify RAM registrations in MM.cpp to test). */
996	AssertLogRelMsgFailedReturn(("%RGp LB %RGp fFlags=%#x pvRam=%p pvMmio2=%p\n", GCPhys, cb, fFlags, pvRam, pvMmio2),
997	VERR_NEM_UNMAP_PAGES_FAILED);
998	}
999
1000	if (fFlags & NEM_NOTIFY_PHYS_MMIO_EX_F_MMIO2)
1001	{
1002	uint32_t const idSlot = *puNemRange;
1003	AssertReturn(idSlot > 0 && idSlot < _32K, VERR_NEM_IPE_4);
1004	AssertReturn(ASMBitTest(pVM->nem.s.bmSlotIds, idSlot), VERR_NEM_IPE_4);
1005
1006	struct kvm_userspace_memory_region Region;
1007	Region.slot = idSlot;
1008	Region.flags = 0;
1009	Region.guest_phys_addr = GCPhys;
1010	Region.memory_size = 0; /* this deregisters it. */
1011	Region.userspace_addr = (uintptr_t)pvMmio2;
1012
1013	int rc = ioctl(pVM->nem.s.fdVm, KVM_SET_USER_MEMORY_REGION, &Region);
1014	if (rc == 0)
1015	{
1016	if (pu2State)
1017	*pu2State = 0;
1018	*puNemRange = UINT32_MAX;
1019	nemR3LnxMemSlotIdFree(pVM, idSlot);
1020	return VINF_SUCCESS;
1021	}
1022
1023	AssertLogRelMsgFailedReturn(("%RGp LB %RGp fFlags=%#x, pvMmio2=%p, idSlot=%#x failed: %u/%u\n",
1024	GCPhys, cb, fFlags, pvMmio2, idSlot, errno, rc),
1025	VERR_NEM_UNMAP_PAGES_FAILED);
1026	}
1027
1028	if (pu2State)
1029	*pu2State = UINT8_MAX;
1030	return VINF_SUCCESS;
1031	}
1032
1033
1034	VMMR3_INT_DECL(int) NEMR3PhysMmio2QueryAndResetDirtyBitmap(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t uNemRange,
1035	void *pvBitmap, size_t cbBitmap)
1036	{
1037	AssertReturn(uNemRange > 0 && uNemRange < _32K, VERR_NEM_IPE_4);
1038	AssertReturn(ASMBitTest(pVM->nem.s.bmSlotIds, uNemRange), VERR_NEM_IPE_4);
1039
1040	RT_NOREF(GCPhys, cbBitmap);
1041
1042	struct kvm_dirty_log DirtyLog;
1043	DirtyLog.slot = uNemRange;
1044	DirtyLog.padding1 = 0;
1045	DirtyLog.dirty_bitmap = pvBitmap;
1046
1047	int rc = ioctl(pVM->nem.s.fdVm, KVM_GET_DIRTY_LOG, &DirtyLog);
1048	AssertLogRelMsgReturn(rc == 0, ("%RGp LB %RGp idSlot=%#x failed: %u/%u\n", GCPhys, cb, uNemRange, errno, rc),
1049	VERR_NEM_QUERY_DIRTY_BITMAP_FAILED);
1050
1051	return VINF_SUCCESS;
1052	}
1053
1054
1055	VMMR3_INT_DECL(int) NEMR3NotifyPhysRomRegisterEarly(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, void *pvPages, uint32_t fFlags,
1056	uint8_t pu2State, uint32_t puNemRange)
1057	{
1058	Log5(("NEMR3NotifyPhysRomRegisterEarly: %RGp LB %RGp pvPages=%p fFlags=%#x\n", GCPhys, cb, pvPages, fFlags));
1059	*pu2State = UINT8_MAX;
1060
1061	/* Don't support puttint ROM where there is already RAM. For
1062	now just shuffle the registrations till it works... */
1063	AssertLogRelMsgReturn(!(fFlags & NEM_NOTIFY_PHYS_ROM_F_REPLACE), ("%RGp LB %RGp fFlags=%#x\n", GCPhys, cb, fFlags),
1064	VERR_NEM_MAP_PAGES_FAILED);
1065
1066	/** @todo figure out how to do shadow ROMs. */
1067
1068	/*
1069	* We only allocate a slot number here in case we need to use it to
1070	* fend of physical handler fun.
1071	*/
1072	uint16_t idSlot = nemR3LnxMemSlotIdAlloc(pVM);
1073	AssertLogRelReturn(idSlot < _32K, VERR_NEM_MAP_PAGES_FAILED);
1074
1075	*pu2State = 0;
1076	*puNemRange = idSlot;
1077	Log5(("NEMR3NotifyPhysRomRegisterEarly: %RGp LB %RGp fFlags=%#x pvPages=%p - idSlot=%#x\n",
1078	GCPhys, cb, fFlags, pvPages, idSlot));
1079	RT_NOREF(GCPhys, cb, fFlags, pvPages);
1080	return VINF_SUCCESS;
1081	}
1082
1083
1084	VMMR3_INT_DECL(int) NEMR3NotifyPhysRomRegisterLate(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, void *pvPages,
1085	uint32_t fFlags, uint8_t pu2State, uint32_t puNemRange)
1086	{
1087	Log5(("NEMR3NotifyPhysRomRegisterLate: %RGp LB %RGp pvPages=%p fFlags=%#x pu2State=%p (%d) puNemRange=%p (%#x)\n",
1088	GCPhys, cb, pvPages, fFlags, pu2State, pu2State, puNemRange, puNemRange));
1089
1090	AssertPtrReturn(pvPages, VERR_NEM_IPE_5);
1091
1092	uint32_t const idSlot = *puNemRange;
1093	AssertReturn(idSlot > 0 && idSlot < _32K, VERR_NEM_IPE_4);
1094	AssertReturn(ASMBitTest(pVM->nem.s.bmSlotIds, idSlot), VERR_NEM_IPE_4);
1095
1096	*pu2State = UINT8_MAX;
1097
1098	/*
1099	* Do the actual setting of the user pages here now that we've
1100	* got a valid pvPages (typically isn't available during the early
1101	* notification, unless we're replacing RAM).
1102	*/
1103	struct kvm_userspace_memory_region Region;
1104	Region.slot = idSlot;
1105	Region.flags = 0;
1106	Region.guest_phys_addr = GCPhys;
1107	Region.memory_size = cb;
1108	Region.userspace_addr = (uintptr_t)pvPages;
1109
1110	int rc = ioctl(pVM->nem.s.fdVm, KVM_SET_USER_MEMORY_REGION, &Region);
1111	if (rc == 0)
1112	{
1113	*pu2State = 0;
1114	Log5(("NEMR3NotifyPhysRomRegisterEarly: %RGp LB %RGp fFlags=%#x pvPages=%p - idSlot=%#x\n",
1115	GCPhys, cb, fFlags, pvPages, idSlot));
1116	return VINF_SUCCESS;
1117	}
1118	AssertLogRelMsgFailedReturn(("%RGp LB %RGp fFlags=%#x, pvPages=%p, idSlot=%#x failed: %u/%u\n",
1119	GCPhys, cb, fFlags, pvPages, idSlot, errno, rc),
1120	VERR_NEM_MAP_PAGES_FAILED);
1121	}
1122
1123
1124	VMMR3_INT_DECL(void) NEMR3NotifySetA20(PVMCPU pVCpu, bool fEnabled)
1125	{
1126	Log(("nemR3NativeNotifySetA20: fEnabled=%RTbool\n", fEnabled));
1127	Assert(VM_IS_NEM_ENABLED(pVCpu->CTX_SUFF(pVM)));
1128	RT_NOREF(pVCpu, fEnabled);
1129	}
1130
1131
1132	VMM_INT_DECL(void) NEMHCNotifyHandlerPhysicalDeregister(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb,
1133	RTR3PTR pvMemR3, uint8_t *pu2State)
1134	{
1135	Log5(("NEMHCNotifyHandlerPhysicalDeregister: %RGp LB %RGp enmKind=%d pvMemR3=%p pu2State=%p (%d)\n",
1136	GCPhys, cb, enmKind, pvMemR3, pu2State, *pu2State));
1137
1138	*pu2State = UINT8_MAX;
1139	RT_NOREF(pVM, enmKind, GCPhys, cb, pvMemR3);
1140	}
1141
1142
1143	void nemHCNativeNotifyHandlerPhysicalRegister(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhys, RTGCPHYS cb)
1144	{
1145	Log5(("nemHCNativeNotifyHandlerPhysicalRegister: %RGp LB %RGp enmKind=%d\n", GCPhys, cb, enmKind));
1146	RT_NOREF(pVM, enmKind, GCPhys, cb);
1147	}
1148
1149
1150	void nemHCNativeNotifyHandlerPhysicalModify(PVMCC pVM, PGMPHYSHANDLERKIND enmKind, RTGCPHYS GCPhysOld,
1151	RTGCPHYS GCPhysNew, RTGCPHYS cb, bool fRestoreAsRAM)
1152	{
1153	Log5(("nemHCNativeNotifyHandlerPhysicalModify: %RGp LB %RGp -> %RGp enmKind=%d fRestoreAsRAM=%d\n",
1154	GCPhysOld, cb, GCPhysNew, enmKind, fRestoreAsRAM));
1155	RT_NOREF(pVM, enmKind, GCPhysOld, GCPhysNew, cb, fRestoreAsRAM);
1156	}
1157
1158
1159	int nemHCNativeNotifyPhysPageAllocated(PVMCC pVM, RTGCPHYS GCPhys, RTHCPHYS HCPhys, uint32_t fPageProt,
1160	PGMPAGETYPE enmType, uint8_t *pu2State)
1161	{
1162	Log5(("nemHCNativeNotifyPhysPageAllocated: %RGp HCPhys=%RHp fPageProt=%#x enmType=%d *pu2State=%d\n",
1163	GCPhys, HCPhys, fPageProt, enmType, *pu2State));
1164	RT_NOREF(pVM, GCPhys, HCPhys, fPageProt, enmType, pu2State);
1165	return VINF_SUCCESS;
1166	}
1167
1168
1169	VMM_INT_DECL(void) NEMHCNotifyPhysPageProtChanged(PVMCC pVM, RTGCPHYS GCPhys, RTHCPHYS HCPhys, RTR3PTR pvR3, uint32_t fPageProt,
1170	PGMPAGETYPE enmType, uint8_t *pu2State)
1171	{
1172	Log5(("NEMHCNotifyPhysPageProtChanged: %RGp HCPhys=%RHp fPageProt=%#x enmType=%d *pu2State=%d\n",
1173	GCPhys, HCPhys, fPageProt, enmType, *pu2State));
1174	Assert(VM_IS_NEM_ENABLED(pVM));
1175	RT_NOREF(pVM, GCPhys, HCPhys, pvR3, fPageProt, enmType, pu2State);
1176
1177	}
1178
1179
1180	VMM_INT_DECL(void) NEMHCNotifyPhysPageChanged(PVMCC pVM, RTGCPHYS GCPhys, RTHCPHYS HCPhysPrev, RTHCPHYS HCPhysNew,
1181	RTR3PTR pvNewR3, uint32_t fPageProt, PGMPAGETYPE enmType, uint8_t *pu2State)
1182	{
1183	Log5(("nemHCNativeNotifyPhysPageChanged: %RGp HCPhys=%RHp->%RHp pvNewR3=%p fPageProt=%#x enmType=%d *pu2State=%d\n",
1184	GCPhys, HCPhysPrev, HCPhysNew, pvNewR3, fPageProt, enmType, *pu2State));
1185	Assert(VM_IS_NEM_ENABLED(pVM));
1186	RT_NOREF(pVM, GCPhys, HCPhysPrev, HCPhysNew, pvNewR3, fPageProt, enmType, pu2State);
1187	}
1188
1189
1190	/*********************************************************************************************************************************
1191	* CPU State *
1192	*********************************************************************************************************************************/
1193
1194	/**
1195	* Worker that imports selected state from KVM.
1196	*/
1197	static int nemHCLnxImportState(PVMCPUCC pVCpu, uint64_t fWhat, PCPUMCTX pCtx, struct kvm_run *pRun)
1198	{
1199	fWhat &= pVCpu->cpum.GstCtx.fExtrn;
1200	if (!fWhat)
1201	return VINF_SUCCESS;
1202
1203	/*
1204	* Stuff that goes into kvm_run::s.regs.regs:
1205	*/
1206	if (fWhat & (CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_GPRS_MASK))
1207	{
1208	if (fWhat & CPUMCTX_EXTRN_RIP)
1209	pCtx->rip = pRun->s.regs.regs.rip;
1210	if (fWhat & CPUMCTX_EXTRN_RFLAGS)
1211	pCtx->rflags.u = pRun->s.regs.regs.rflags;
1212
1213	if (fWhat & CPUMCTX_EXTRN_RAX)
1214	pCtx->rax = pRun->s.regs.regs.rax;
1215	if (fWhat & CPUMCTX_EXTRN_RCX)
1216	pCtx->rcx = pRun->s.regs.regs.rcx;
1217	if (fWhat & CPUMCTX_EXTRN_RDX)
1218	pCtx->rdx = pRun->s.regs.regs.rdx;
1219	if (fWhat & CPUMCTX_EXTRN_RBX)
1220	pCtx->rbx = pRun->s.regs.regs.rbx;
1221	if (fWhat & CPUMCTX_EXTRN_RSP)
1222	pCtx->rsp = pRun->s.regs.regs.rsp;
1223	if (fWhat & CPUMCTX_EXTRN_RBP)
1224	pCtx->rbp = pRun->s.regs.regs.rbp;
1225	if (fWhat & CPUMCTX_EXTRN_RSI)
1226	pCtx->rsi = pRun->s.regs.regs.rsi;
1227	if (fWhat & CPUMCTX_EXTRN_RDI)
1228	pCtx->rdi = pRun->s.regs.regs.rdi;
1229	if (fWhat & CPUMCTX_EXTRN_R8_R15)
1230	{
1231	pCtx->r8 = pRun->s.regs.regs.r8;
1232	pCtx->r9 = pRun->s.regs.regs.r9;
1233	pCtx->r10 = pRun->s.regs.regs.r10;
1234	pCtx->r11 = pRun->s.regs.regs.r11;
1235	pCtx->r12 = pRun->s.regs.regs.r12;
1236	pCtx->r13 = pRun->s.regs.regs.r13;
1237	pCtx->r14 = pRun->s.regs.regs.r14;
1238	pCtx->r15 = pRun->s.regs.regs.r15;
1239	}
1240	}
1241
1242	/*
1243	* Stuff that goes into kvm_run::s.regs.sregs.
1244	*
1245	* Note! The apic_base can be ignored because we gets all MSR writes to it
1246	* and VBox always keeps the correct value.
1247	*/
1248	bool fMaybeChangedMode = false;
1249	bool fUpdateCr3 = false;
1250	if (fWhat & ( CPUMCTX_EXTRN_SREG_MASK \| CPUMCTX_EXTRN_TABLE_MASK \| CPUMCTX_EXTRN_CR_MASK
1251	\| CPUMCTX_EXTRN_EFER \| CPUMCTX_EXTRN_APIC_TPR))
1252	{
1253	/** @todo what about Attr.n.u4LimitHigh? */
1254	#define NEM_LNX_IMPORT_SEG(a_CtxSeg, a_KvmSeg) do { \
1255	(a_CtxSeg).u64Base = (a_KvmSeg).base; \
1256	(a_CtxSeg).u32Limit = (a_KvmSeg).limit; \
1257	(a_CtxSeg).ValidSel = (a_CtxSeg).Sel = (a_KvmSeg).selector; \
1258	(a_CtxSeg).Attr.n.u4Type = (a_KvmSeg).type; \
1259	(a_CtxSeg).Attr.n.u1DescType = (a_KvmSeg).s; \
1260	(a_CtxSeg).Attr.n.u2Dpl = (a_KvmSeg).dpl; \
1261	(a_CtxSeg).Attr.n.u1Present = (a_KvmSeg).present; \
1262	(a_CtxSeg).Attr.n.u1Available = (a_KvmSeg).avl; \
1263	(a_CtxSeg).Attr.n.u1Long = (a_KvmSeg).l; \
1264	(a_CtxSeg).Attr.n.u1DefBig = (a_KvmSeg).db; \
1265	(a_CtxSeg).Attr.n.u1Granularity = (a_KvmSeg).g; \
1266	(a_CtxSeg).Attr.n.u1Unusable = (a_KvmSeg).unusable; \
1267	(a_CtxSeg).fFlags = CPUMSELREG_FLAGS_VALID; \
1268	CPUMSELREG_ARE_HIDDEN_PARTS_VALID(pVCpu, &(a_CtxSeg)); \
1269	} while (0)
1270
1271	if (fWhat & CPUMCTX_EXTRN_SREG_MASK)
1272	{
1273	if (fWhat & CPUMCTX_EXTRN_ES)
1274	NEM_LNX_IMPORT_SEG(pCtx->es, pRun->s.regs.sregs.es);
1275	if (fWhat & CPUMCTX_EXTRN_CS)
1276	NEM_LNX_IMPORT_SEG(pCtx->cs, pRun->s.regs.sregs.cs);
1277	if (fWhat & CPUMCTX_EXTRN_SS)
1278	NEM_LNX_IMPORT_SEG(pCtx->ss, pRun->s.regs.sregs.ss);
1279	if (fWhat & CPUMCTX_EXTRN_DS)
1280	NEM_LNX_IMPORT_SEG(pCtx->ds, pRun->s.regs.sregs.ds);
1281	if (fWhat & CPUMCTX_EXTRN_FS)
1282	NEM_LNX_IMPORT_SEG(pCtx->fs, pRun->s.regs.sregs.fs);
1283	if (fWhat & CPUMCTX_EXTRN_GS)
1284	NEM_LNX_IMPORT_SEG(pCtx->gs, pRun->s.regs.sregs.gs);
1285	}
1286	if (fWhat & CPUMCTX_EXTRN_TABLE_MASK)
1287	{
1288	if (fWhat & CPUMCTX_EXTRN_GDTR)
1289	{
1290	pCtx->gdtr.pGdt = pRun->s.regs.sregs.gdt.base;
1291	pCtx->gdtr.cbGdt = pRun->s.regs.sregs.gdt.limit;
1292	}
1293	if (fWhat & CPUMCTX_EXTRN_IDTR)
1294	{
1295	pCtx->idtr.pIdt = pRun->s.regs.sregs.idt.base;
1296	pCtx->idtr.cbIdt = pRun->s.regs.sregs.idt.limit;
1297	}
1298	if (fWhat & CPUMCTX_EXTRN_LDTR)
1299	NEM_LNX_IMPORT_SEG(pCtx->ldtr, pRun->s.regs.sregs.ldt);
1300	if (fWhat & CPUMCTX_EXTRN_TR)
1301	NEM_LNX_IMPORT_SEG(pCtx->tr, pRun->s.regs.sregs.tr);
1302	}
1303	if (fWhat & CPUMCTX_EXTRN_CR_MASK)
1304	{
1305	if (fWhat & CPUMCTX_EXTRN_CR0)
1306	{
1307	if (pVCpu->cpum.GstCtx.cr0 != pRun->s.regs.sregs.cr0)
1308	{
1309	CPUMSetGuestCR0(pVCpu, pRun->s.regs.sregs.cr0);
1310	fMaybeChangedMode = true;
1311	}
1312	}
1313	if (fWhat & CPUMCTX_EXTRN_CR2)
1314	pCtx->cr2 = pRun->s.regs.sregs.cr2;
1315	if (fWhat & CPUMCTX_EXTRN_CR3)
1316	{
1317	if (pCtx->cr3 != pRun->s.regs.sregs.cr3)
1318	{
1319	CPUMSetGuestCR3(pVCpu, pRun->s.regs.sregs.cr3);
1320	fUpdateCr3 = true;
1321	}
1322	}
1323	if (fWhat & CPUMCTX_EXTRN_CR4)
1324	{
1325	if (pCtx->cr4 != pRun->s.regs.sregs.cr4)
1326	{
1327	CPUMSetGuestCR4(pVCpu, pRun->s.regs.sregs.cr4);
1328	fMaybeChangedMode = true;
1329	}
1330	}
1331	}
1332	if (fWhat & CPUMCTX_EXTRN_APIC_TPR)
1333	APICSetTpr(pVCpu, (uint8_t)pRun->s.regs.sregs.cr8 << 4);
1334	if (fWhat & CPUMCTX_EXTRN_EFER)
1335	{
1336	if (pCtx->msrEFER != pRun->s.regs.sregs.efer)
1337	{
1338	Log7(("NEM/%u: MSR EFER changed %RX64 -> %RX64\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.msrEFER, pRun->s.regs.sregs.efer));
1339	if ((pRun->s.regs.sregs.efer ^ pVCpu->cpum.GstCtx.msrEFER) & MSR_K6_EFER_NXE)
1340	PGMNotifyNxeChanged(pVCpu, RT_BOOL(pRun->s.regs.sregs.efer & MSR_K6_EFER_NXE));
1341	pCtx->msrEFER = pRun->s.regs.sregs.efer;
1342	fMaybeChangedMode = true;
1343	}
1344	}
1345	#undef NEM_LNX_IMPORT_SEG
1346	}
1347
1348	/*
1349	* Debug registers.
1350	*/
1351	if (fWhat & CPUMCTX_EXTRN_DR_MASK)
1352	{
1353	struct kvm_debugregs DbgRegs = {{0}};
1354	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_DEBUGREGS, &DbgRegs);
1355	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1356
1357	if (fWhat & CPUMCTX_EXTRN_DR0_DR3)
1358	{
1359	pCtx->dr[0] = DbgRegs.db[0];
1360	pCtx->dr[1] = DbgRegs.db[1];
1361	pCtx->dr[2] = DbgRegs.db[2];
1362	pCtx->dr[3] = DbgRegs.db[3];
1363	}
1364	if (fWhat & CPUMCTX_EXTRN_DR6)
1365	pCtx->dr[6] = DbgRegs.dr6;
1366	if (fWhat & CPUMCTX_EXTRN_DR7)
1367	pCtx->dr[7] = DbgRegs.dr7;
1368	}
1369
1370	/*
1371	* FPU, SSE, AVX, ++.
1372	*/
1373	if (fWhat & (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE \| CPUMCTX_EXTRN_XCRx))
1374	{
1375	if (fWhat & (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE))
1376	{
1377	fWhat \|= CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE; /* we do all or nothing at all */
1378
1379	AssertCompile(sizeof(pCtx->XState) >= sizeof(struct kvm_xsave));
1380	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_XSAVE, &pCtx->XState);
1381	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1382	}
1383
1384	if (fWhat & CPUMCTX_EXTRN_XCRx)
1385	{
1386	struct kvm_xcrs Xcrs =
1387	{ /.nr_xcrs = / 2,
1388	/.flags = / 0,
1389	/.xcrs= / {
1390	{ /.xcr =/ 0, /.reserved=/ 0, /.value=/ pCtx->aXcr[0] },
1391	{ /.xcr =/ 1, /.reserved=/ 0, /.value=/ pCtx->aXcr[1] },
1392	}
1393	};
1394
1395	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_XCRS, &Xcrs);
1396	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1397
1398	pCtx->aXcr[0] = Xcrs.xcrs[0].value;
1399	pCtx->aXcr[1] = Xcrs.xcrs[1].value;
1400	}
1401	}
1402
1403	/*
1404	* MSRs.
1405	*/
1406	if (fWhat & ( CPUMCTX_EXTRN_KERNEL_GS_BASE \| CPUMCTX_EXTRN_SYSCALL_MSRS \| CPUMCTX_EXTRN_SYSENTER_MSRS
1407	\| CPUMCTX_EXTRN_TSC_AUX \| CPUMCTX_EXTRN_OTHER_MSRS))
1408	{
1409	union
1410	{
1411	struct kvm_msrs Core;
1412	uint64_t padding[2 + sizeof(struct kvm_msr_entry) * 32];
1413	} uBuf;
1414	uint64_t *pauDsts[32];
1415	uint32_t iMsr = 0;
1416	PCPUMCTXMSRS const pCtxMsrs = CPUMQueryGuestCtxMsrsPtr(pVCpu);
1417
1418	#define ADD_MSR(a_Msr, a_uValue) do { \
1419	Assert(iMsr < 32); \
1420	uBuf.Core.entries[iMsr].index = (a_Msr); \
1421	uBuf.Core.entries[iMsr].reserved = 0; \
1422	uBuf.Core.entries[iMsr].data = UINT64_MAX; \
1423	pauDsts[iMsr] = &(a_uValue); \
1424	iMsr += 1; \
1425	} while (0)
1426
1427	if (fWhat & CPUMCTX_EXTRN_KERNEL_GS_BASE)
1428	ADD_MSR(MSR_K8_KERNEL_GS_BASE, pCtx->msrKERNELGSBASE);
1429	if (fWhat & CPUMCTX_EXTRN_SYSCALL_MSRS)
1430	{
1431	ADD_MSR(MSR_K6_STAR, pCtx->msrSTAR);
1432	ADD_MSR(MSR_K8_LSTAR, pCtx->msrLSTAR);
1433	ADD_MSR(MSR_K8_CSTAR, pCtx->msrCSTAR);
1434	ADD_MSR(MSR_K8_SF_MASK, pCtx->msrSFMASK);
1435	}
1436	if (fWhat & CPUMCTX_EXTRN_SYSENTER_MSRS)
1437	{
1438	ADD_MSR(MSR_IA32_SYSENTER_CS, pCtx->SysEnter.cs);
1439	ADD_MSR(MSR_IA32_SYSENTER_EIP, pCtx->SysEnter.eip);
1440	ADD_MSR(MSR_IA32_SYSENTER_ESP, pCtx->SysEnter.esp);
1441	}
1442	if (fWhat & CPUMCTX_EXTRN_TSC_AUX)
1443	ADD_MSR(MSR_K8_TSC_AUX, pCtxMsrs->msr.TscAux);
1444	if (fWhat & CPUMCTX_EXTRN_OTHER_MSRS)
1445	{
1446	ADD_MSR(MSR_IA32_CR_PAT, pCtx->msrPAT);
1447	/** @todo What do we _have_ to add here?
1448	* We also have: Mttr, MiscEnable, FeatureControl. /
1449	}
1450
1451	uBuf.Core.pad = 0;
1452	uBuf.Core.nmsrs = iMsr;
1453	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_MSRS, &uBuf);
1454	AssertMsgReturn(rc == (int)iMsr,
1455	("rc=%d iMsr=%d (->%#x) errno=%d\n",
1456	rc, iMsr, (uint32_t)rc < iMsr ? uBuf.Core.entries[rc].index : 0, errno),
1457	VERR_NEM_IPE_3);
1458
1459	while (iMsr-- > 0)
1460	*pauDsts[iMsr] = uBuf.Core.entries[iMsr].data;
1461	#undef ADD_MSR
1462	}
1463
1464	/*
1465	* Interruptibility state and pending interrupts.
1466	*/
1467	if (fWhat & (CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI))
1468	{
1469	fWhat \|= CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI; /* always do both, see export and interrupt FF handling */
1470
1471	struct kvm_vcpu_events KvmEvents = {0};
1472	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_VCPU_EVENTS, &KvmEvents);
1473	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_3);
1474
1475	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_RIP)
1476	pVCpu->cpum.GstCtx.rip = pRun->s.regs.regs.rip;
1477
1478	CPUMUpdateInterruptShadowEx(&pVCpu->cpum.GstCtx, KvmEvents.interrupt.shadow != 0, pVCpu->cpum.GstCtx.rip);
1479	CPUMUpdateInterruptInhibitingByNmi(&pVCpu->cpum.GstCtx, KvmEvents.nmi.masked != 0);
1480
1481	if (KvmEvents.interrupt.injected)
1482	{
1483	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatImportPendingInterrupt);
1484	TRPMAssertTrap(pVCpu, KvmEvents.interrupt.nr, !KvmEvents.interrupt.soft ? TRPM_HARDWARE_INT : TRPM_SOFTWARE_INT);
1485	}
1486
1487	Assert(KvmEvents.nmi.injected == 0);
1488	Assert(KvmEvents.nmi.pending == 0);
1489	}
1490
1491	/*
1492	* Update the external mask.
1493	*/
1494	pCtx->fExtrn &= ~fWhat;
1495	pVCpu->cpum.GstCtx.fExtrn &= ~fWhat;
1496	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_ALL))
1497	pVCpu->cpum.GstCtx.fExtrn = 0;
1498
1499	/*
1500	* We sometimes need to update PGM on the guest status.
1501	*/
1502	if (!fMaybeChangedMode && !fUpdateCr3)
1503	{ /* likely */ }
1504	else
1505	{
1506	/*
1507	* Make sure we got all the state PGM might need.
1508	*/
1509	Log7(("nemHCLnxImportState: fMaybeChangedMode=%d fUpdateCr3=%d fExtrnNeeded=%#RX64\n", fMaybeChangedMode, fUpdateCr3,
1510	pVCpu->cpum.GstCtx.fExtrn & (CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_EFER) ));
1511	if (pVCpu->cpum.GstCtx.fExtrn & (CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_EFER))
1512	{
1513	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_CR0)
1514	{
1515	if (pVCpu->cpum.GstCtx.cr0 != pRun->s.regs.sregs.cr0)
1516	{
1517	CPUMSetGuestCR0(pVCpu, pRun->s.regs.sregs.cr0);
1518	fMaybeChangedMode = true;
1519	}
1520	}
1521	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_CR3)
1522	{
1523	if (pCtx->cr3 != pRun->s.regs.sregs.cr3)
1524	{
1525	CPUMSetGuestCR3(pVCpu, pRun->s.regs.sregs.cr3);
1526	fUpdateCr3 = true;
1527	}
1528	}
1529	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_CR4)
1530	{
1531	if (pCtx->cr4 != pRun->s.regs.sregs.cr4)
1532	{
1533	CPUMSetGuestCR4(pVCpu, pRun->s.regs.sregs.cr4);
1534	fMaybeChangedMode = true;
1535	}
1536	}
1537	if (fWhat & CPUMCTX_EXTRN_EFER)
1538	{
1539	if (pCtx->msrEFER != pRun->s.regs.sregs.efer)
1540	{
1541	Log7(("NEM/%u: MSR EFER changed %RX64 -> %RX64\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.msrEFER, pRun->s.regs.sregs.efer));
1542	if ((pRun->s.regs.sregs.efer ^ pVCpu->cpum.GstCtx.msrEFER) & MSR_K6_EFER_NXE)
1543	PGMNotifyNxeChanged(pVCpu, RT_BOOL(pRun->s.regs.sregs.efer & MSR_K6_EFER_NXE));
1544	pCtx->msrEFER = pRun->s.regs.sregs.efer;
1545	fMaybeChangedMode = true;
1546	}
1547	}
1548
1549	pVCpu->cpum.GstCtx.fExtrn &= ~(CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_EFER);
1550	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_ALL))
1551	pVCpu->cpum.GstCtx.fExtrn = 0;
1552	}
1553
1554	/*
1555	* Notify PGM about the changes.
1556	*/
1557	if (fMaybeChangedMode)
1558	{
1559	int rc = PGMChangeMode(pVCpu, pVCpu->cpum.GstCtx.cr0, pVCpu->cpum.GstCtx.cr4,
1560	pVCpu->cpum.GstCtx.msrEFER, false /fForce/);
1561	AssertMsgReturn(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_NEM_IPE_1);
1562	}
1563
1564	if (fUpdateCr3)
1565	{
1566	int rc = PGMUpdateCR3(pVCpu, pVCpu->cpum.GstCtx.cr3);
1567	if (rc == VINF_SUCCESS)
1568	{ /* likely */ }
1569	else
1570	AssertMsgFailedReturn(("rc=%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_NEM_IPE_2);
1571	}
1572	}
1573
1574	return VINF_SUCCESS;
1575	}
1576
1577
1578	/**
1579	* Interface for importing state on demand (used by IEM).
1580	*
1581	* @returns VBox status code.
1582	* @param pVCpu The cross context CPU structure.
1583	* @param fWhat What to import, CPUMCTX_EXTRN_XXX.
1584	*/
1585	VMM_INT_DECL(int) NEMImportStateOnDemand(PVMCPUCC pVCpu, uint64_t fWhat)
1586	{
1587	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatImportOnDemand);
1588	return nemHCLnxImportState(pVCpu, fWhat, &pVCpu->cpum.GstCtx, pVCpu->nem.s.pRun);
1589	}
1590
1591
1592	/**
1593	* Exports state to KVM.
1594	*/
1595	static int nemHCLnxExportState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, struct kvm_run *pRun)
1596	{
1597	uint64_t const fExtrn = ~pCtx->fExtrn & CPUMCTX_EXTRN_ALL;
1598	Assert((~fExtrn & CPUMCTX_EXTRN_ALL) != CPUMCTX_EXTRN_ALL);
1599
1600	/*
1601	* Stuff that goes into kvm_run::s.regs.regs:
1602	*/
1603	if (fExtrn & (CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_GPRS_MASK))
1604	{
1605	if (fExtrn & CPUMCTX_EXTRN_RIP)
1606	pRun->s.regs.regs.rip = pCtx->rip;
1607	if (fExtrn & CPUMCTX_EXTRN_RFLAGS)
1608	pRun->s.regs.regs.rflags = pCtx->rflags.u;
1609
1610	if (fExtrn & CPUMCTX_EXTRN_RAX)
1611	pRun->s.regs.regs.rax = pCtx->rax;
1612	if (fExtrn & CPUMCTX_EXTRN_RCX)
1613	pRun->s.regs.regs.rcx = pCtx->rcx;
1614	if (fExtrn & CPUMCTX_EXTRN_RDX)
1615	pRun->s.regs.regs.rdx = pCtx->rdx;
1616	if (fExtrn & CPUMCTX_EXTRN_RBX)
1617	pRun->s.regs.regs.rbx = pCtx->rbx;
1618	if (fExtrn & CPUMCTX_EXTRN_RSP)
1619	pRun->s.regs.regs.rsp = pCtx->rsp;
1620	if (fExtrn & CPUMCTX_EXTRN_RBP)
1621	pRun->s.regs.regs.rbp = pCtx->rbp;
1622	if (fExtrn & CPUMCTX_EXTRN_RSI)
1623	pRun->s.regs.regs.rsi = pCtx->rsi;
1624	if (fExtrn & CPUMCTX_EXTRN_RDI)
1625	pRun->s.regs.regs.rdi = pCtx->rdi;
1626	if (fExtrn & CPUMCTX_EXTRN_R8_R15)
1627	{
1628	pRun->s.regs.regs.r8 = pCtx->r8;
1629	pRun->s.regs.regs.r9 = pCtx->r9;
1630	pRun->s.regs.regs.r10 = pCtx->r10;
1631	pRun->s.regs.regs.r11 = pCtx->r11;
1632	pRun->s.regs.regs.r12 = pCtx->r12;
1633	pRun->s.regs.regs.r13 = pCtx->r13;
1634	pRun->s.regs.regs.r14 = pCtx->r14;
1635	pRun->s.regs.regs.r15 = pCtx->r15;
1636	}
1637	pRun->kvm_dirty_regs \|= KVM_SYNC_X86_REGS;
1638	}
1639
1640	/*
1641	* Stuff that goes into kvm_run::s.regs.sregs:
1642	*
1643	* The APIC base register updating is a little suboptimal... But at least
1644	* VBox always has the right base register value, so it's one directional.
1645	*/
1646	uint64_t const uApicBase = APICGetBaseMsrNoCheck(pVCpu);
1647	if ( (fExtrn & ( CPUMCTX_EXTRN_SREG_MASK \| CPUMCTX_EXTRN_TABLE_MASK \| CPUMCTX_EXTRN_CR_MASK
1648	\| CPUMCTX_EXTRN_EFER \| CPUMCTX_EXTRN_APIC_TPR))
1649	\|\| uApicBase != pVCpu->nem.s.uKvmApicBase)
1650	{
1651	if ((pVCpu->nem.s.uKvmApicBase ^ uApicBase) & MSR_IA32_APICBASE_EN)
1652	Log(("NEM/%u: APICBASE_EN changed %#010RX64 -> %#010RX64\n", pVCpu->idCpu, pVCpu->nem.s.uKvmApicBase, uApicBase));
1653	pRun->s.regs.sregs.apic_base = uApicBase;
1654	pVCpu->nem.s.uKvmApicBase = uApicBase;
1655
1656	if (fExtrn & CPUMCTX_EXTRN_APIC_TPR)
1657	pRun->s.regs.sregs.cr8 = CPUMGetGuestCR8(pVCpu);
1658
1659	#define NEM_LNX_EXPORT_SEG(a_KvmSeg, a_CtxSeg) do { \
1660	(a_KvmSeg).base = (a_CtxSeg).u64Base; \
1661	(a_KvmSeg).limit = (a_CtxSeg).u32Limit; \
1662	(a_KvmSeg).selector = (a_CtxSeg).Sel; \
1663	(a_KvmSeg).type = (a_CtxSeg).Attr.n.u4Type; \
1664	(a_KvmSeg).s = (a_CtxSeg).Attr.n.u1DescType; \
1665	(a_KvmSeg).dpl = (a_CtxSeg).Attr.n.u2Dpl; \
1666	(a_KvmSeg).present = (a_CtxSeg).Attr.n.u1Present; \
1667	(a_KvmSeg).avl = (a_CtxSeg).Attr.n.u1Available; \
1668	(a_KvmSeg).l = (a_CtxSeg).Attr.n.u1Long; \
1669	(a_KvmSeg).db = (a_CtxSeg).Attr.n.u1DefBig; \
1670	(a_KvmSeg).g = (a_CtxSeg).Attr.n.u1Granularity; \
1671	(a_KvmSeg).unusable = (a_CtxSeg).Attr.n.u1Unusable; \
1672	(a_KvmSeg).padding = 0; \
1673	} while (0)
1674
1675	if (fExtrn & CPUMCTX_EXTRN_SREG_MASK)
1676	{
1677	if (fExtrn & CPUMCTX_EXTRN_ES)
1678	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.es, pCtx->es);
1679	if (fExtrn & CPUMCTX_EXTRN_CS)
1680	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.cs, pCtx->cs);
1681	if (fExtrn & CPUMCTX_EXTRN_SS)
1682	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.ss, pCtx->ss);
1683	if (fExtrn & CPUMCTX_EXTRN_DS)
1684	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.ds, pCtx->ds);
1685	if (fExtrn & CPUMCTX_EXTRN_FS)
1686	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.fs, pCtx->fs);
1687	if (fExtrn & CPUMCTX_EXTRN_GS)
1688	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.gs, pCtx->gs);
1689	}
1690	if (fExtrn & CPUMCTX_EXTRN_TABLE_MASK)
1691	{
1692	if (fExtrn & CPUMCTX_EXTRN_GDTR)
1693	{
1694	pRun->s.regs.sregs.gdt.base = pCtx->gdtr.pGdt;
1695	pRun->s.regs.sregs.gdt.limit = pCtx->gdtr.cbGdt;
1696	pRun->s.regs.sregs.gdt.padding[0] = 0;
1697	pRun->s.regs.sregs.gdt.padding[1] = 0;
1698	pRun->s.regs.sregs.gdt.padding[2] = 0;
1699	}
1700	if (fExtrn & CPUMCTX_EXTRN_IDTR)
1701	{
1702	pRun->s.regs.sregs.idt.base = pCtx->idtr.pIdt;
1703	pRun->s.regs.sregs.idt.limit = pCtx->idtr.cbIdt;
1704	pRun->s.regs.sregs.idt.padding[0] = 0;
1705	pRun->s.regs.sregs.idt.padding[1] = 0;
1706	pRun->s.regs.sregs.idt.padding[2] = 0;
1707	}
1708	if (fExtrn & CPUMCTX_EXTRN_LDTR)
1709	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.ldt, pCtx->ldtr);
1710	if (fExtrn & CPUMCTX_EXTRN_TR)
1711	NEM_LNX_EXPORT_SEG(pRun->s.regs.sregs.tr, pCtx->tr);
1712	}
1713	if (fExtrn & CPUMCTX_EXTRN_CR_MASK)
1714	{
1715	if (fExtrn & CPUMCTX_EXTRN_CR0)
1716	pRun->s.regs.sregs.cr0 = pCtx->cr0;
1717	if (fExtrn & CPUMCTX_EXTRN_CR2)
1718	pRun->s.regs.sregs.cr2 = pCtx->cr2;
1719	if (fExtrn & CPUMCTX_EXTRN_CR3)
1720	pRun->s.regs.sregs.cr3 = pCtx->cr3;
1721	if (fExtrn & CPUMCTX_EXTRN_CR4)
1722	pRun->s.regs.sregs.cr4 = pCtx->cr4;
1723	}
1724	if (fExtrn & CPUMCTX_EXTRN_EFER)
1725	pRun->s.regs.sregs.efer = pCtx->msrEFER;
1726
1727	RT_ZERO(pRun->s.regs.sregs.interrupt_bitmap); /* this is an alternative interrupt injection interface */
1728
1729	pRun->kvm_dirty_regs \|= KVM_SYNC_X86_SREGS;
1730	}
1731
1732	/*
1733	* Debug registers.
1734	*/
1735	if (fExtrn & CPUMCTX_EXTRN_DR_MASK)
1736	{
1737	struct kvm_debugregs DbgRegs = {{0}};
1738
1739	if ((fExtrn & CPUMCTX_EXTRN_DR_MASK) != CPUMCTX_EXTRN_DR_MASK)
1740	{
1741	/* Partial debug state, we must get DbgRegs first so we can merge: */
1742	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_DEBUGREGS, &DbgRegs);
1743	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1744	}
1745
1746	if (fExtrn & CPUMCTX_EXTRN_DR0_DR3)
1747	{
1748	DbgRegs.db[0] = pCtx->dr[0];
1749	DbgRegs.db[1] = pCtx->dr[1];
1750	DbgRegs.db[2] = pCtx->dr[2];
1751	DbgRegs.db[3] = pCtx->dr[3];
1752	}
1753	if (fExtrn & CPUMCTX_EXTRN_DR6)
1754	DbgRegs.dr6 = pCtx->dr[6];
1755	if (fExtrn & CPUMCTX_EXTRN_DR7)
1756	DbgRegs.dr7 = pCtx->dr[7];
1757
1758	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_DEBUGREGS, &DbgRegs);
1759	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1760	}
1761
1762	/*
1763	* FPU, SSE, AVX, ++.
1764	*/
1765	if (fExtrn & (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE \| CPUMCTX_EXTRN_XCRx))
1766	{
1767	if (fExtrn & (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE))
1768	{
1769	/** @todo could IEM just grab state partial control in some situations? */
1770	Assert( (fExtrn & (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE))
1771	== (CPUMCTX_EXTRN_X87 \| CPUMCTX_EXTRN_SSE_AVX \| CPUMCTX_EXTRN_OTHER_XSAVE)); /* no partial states */
1772
1773	AssertCompile(sizeof(pCtx->XState) >= sizeof(struct kvm_xsave));
1774	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_XSAVE, &pCtx->XState);
1775	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1776	}
1777
1778	if (fExtrn & CPUMCTX_EXTRN_XCRx)
1779	{
1780	struct kvm_xcrs Xcrs =
1781	{ /.nr_xcrs = / 2,
1782	/.flags = / 0,
1783	/.xcrs= / {
1784	{ /.xcr =/ 0, /.reserved=/ 0, /.value=/ pCtx->aXcr[0] },
1785	{ /.xcr =/ 1, /.reserved=/ 0, /.value=/ pCtx->aXcr[1] },
1786	}
1787	};
1788
1789	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_XCRS, &Xcrs);
1790	AssertMsgReturn(rc == 0, ("rc=%d errno=%d\n", rc, errno), VERR_NEM_IPE_3);
1791	}
1792	}
1793
1794	/*
1795	* MSRs.
1796	*/
1797	if (fExtrn & ( CPUMCTX_EXTRN_KERNEL_GS_BASE \| CPUMCTX_EXTRN_SYSCALL_MSRS \| CPUMCTX_EXTRN_SYSENTER_MSRS
1798	\| CPUMCTX_EXTRN_TSC_AUX \| CPUMCTX_EXTRN_OTHER_MSRS))
1799	{
1800	union
1801	{
1802	struct kvm_msrs Core;
1803	uint64_t padding[2 + sizeof(struct kvm_msr_entry) * 32];
1804	} uBuf;
1805	uint32_t iMsr = 0;
1806	PCPUMCTXMSRS const pCtxMsrs = CPUMQueryGuestCtxMsrsPtr(pVCpu);
1807
1808	#define ADD_MSR(a_Msr, a_uValue) do { \
1809	Assert(iMsr < 32); \
1810	uBuf.Core.entries[iMsr].index = (a_Msr); \
1811	uBuf.Core.entries[iMsr].reserved = 0; \
1812	uBuf.Core.entries[iMsr].data = (a_uValue); \
1813	iMsr += 1; \
1814	} while (0)
1815
1816	if (fExtrn & CPUMCTX_EXTRN_KERNEL_GS_BASE)
1817	ADD_MSR(MSR_K8_KERNEL_GS_BASE, pCtx->msrKERNELGSBASE);
1818	if (fExtrn & CPUMCTX_EXTRN_SYSCALL_MSRS)
1819	{
1820	ADD_MSR(MSR_K6_STAR, pCtx->msrSTAR);
1821	ADD_MSR(MSR_K8_LSTAR, pCtx->msrLSTAR);
1822	ADD_MSR(MSR_K8_CSTAR, pCtx->msrCSTAR);
1823	ADD_MSR(MSR_K8_SF_MASK, pCtx->msrSFMASK);
1824	}
1825	if (fExtrn & CPUMCTX_EXTRN_SYSENTER_MSRS)
1826	{
1827	ADD_MSR(MSR_IA32_SYSENTER_CS, pCtx->SysEnter.cs);
1828	ADD_MSR(MSR_IA32_SYSENTER_EIP, pCtx->SysEnter.eip);
1829	ADD_MSR(MSR_IA32_SYSENTER_ESP, pCtx->SysEnter.esp);
1830	}
1831	if (fExtrn & CPUMCTX_EXTRN_TSC_AUX)
1832	ADD_MSR(MSR_K8_TSC_AUX, pCtxMsrs->msr.TscAux);
1833	if (fExtrn & CPUMCTX_EXTRN_OTHER_MSRS)
1834	{
1835	ADD_MSR(MSR_IA32_CR_PAT, pCtx->msrPAT);
1836	/** @todo What do we _have_ to add here?
1837	* We also have: Mttr, MiscEnable, FeatureControl. /
1838	}
1839
1840	uBuf.Core.pad = 0;
1841	uBuf.Core.nmsrs = iMsr;
1842	int rc = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_MSRS, &uBuf);
1843	AssertMsgReturn(rc == (int)iMsr,
1844	("rc=%d iMsr=%d (->%#x) errno=%d\n",
1845	rc, iMsr, (uint32_t)rc < iMsr ? uBuf.Core.entries[rc].index : 0, errno),
1846	VERR_NEM_IPE_3);
1847	}
1848
1849	/*
1850	* Interruptibility state.
1851	*
1852	* Note! This I/O control function sets most fields passed in, so when
1853	* raising an interrupt, NMI, SMI or exception, this must be done
1854	* by the code doing the rasing or we'll overwrite it here.
1855	*/
1856	if (fExtrn & (CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI))
1857	{
1858	Assert( (fExtrn & (CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI))
1859	== (CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI));
1860
1861	struct kvm_vcpu_events KvmEvents = {0};
1862
1863	KvmEvents.flags = KVM_VCPUEVENT_VALID_SHADOW;
1864	if (!CPUMIsInInterruptShadowWithUpdate(&pVCpu->cpum.GstCtx))
1865	{ /* probably likely */ }
1866	else
1867	KvmEvents.interrupt.shadow = KVM_X86_SHADOW_INT_MOV_SS \| KVM_X86_SHADOW_INT_STI;
1868
1869	/* No flag - this is updated unconditionally. */
1870	KvmEvents.nmi.masked = CPUMAreInterruptsInhibitedByNmi(&pVCpu->cpum.GstCtx);
1871
1872	if (TRPMHasTrap(pVCpu))
1873	{
1874	TRPMEVENT enmType = TRPM_32BIT_HACK;
1875	uint8_t bTrapNo = 0;
1876	TRPMQueryTrap(pVCpu, &bTrapNo, &enmType);
1877	Log(("nemHCLnxExportState: Pending trap: bTrapNo=%#x enmType=%d\n", bTrapNo, enmType));
1878	if ( enmType == TRPM_HARDWARE_INT
1879	\|\| enmType == TRPM_SOFTWARE_INT)
1880	{
1881	KvmEvents.interrupt.soft = enmType == TRPM_SOFTWARE_INT;
1882	KvmEvents.interrupt.nr = bTrapNo;
1883	KvmEvents.interrupt.injected = 1;
1884	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExportPendingInterrupt);
1885	TRPMResetTrap(pVCpu);
1886	}
1887	else
1888	AssertFailed();
1889	}
1890
1891	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_VCPU_EVENTS, &KvmEvents);
1892	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_3);
1893	}
1894
1895	/*
1896	* KVM now owns all the state.
1897	*/
1898	pCtx->fExtrn = CPUMCTX_EXTRN_KEEPER_NEM \| CPUMCTX_EXTRN_ALL;
1899
1900	RT_NOREF(pVM);
1901	return VINF_SUCCESS;
1902	}
1903
1904
1905	/**
1906	* Query the CPU tick counter and optionally the TSC_AUX MSR value.
1907	*
1908	* @returns VBox status code.
1909	* @param pVCpu The cross context CPU structure.
1910	* @param pcTicks Where to return the CPU tick count.
1911	* @param puAux Where to return the TSC_AUX register value.
1912	*/
1913	VMM_INT_DECL(int) NEMHCQueryCpuTick(PVMCPUCC pVCpu, uint64_t pcTicks, uint32_t puAux)
1914	{
1915	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatQueryCpuTick);
1916	// KVM_GET_CLOCK?
1917	RT_NOREF(pVCpu, pcTicks, puAux);
1918	return VINF_SUCCESS;
1919	}
1920
1921
1922	/**
1923	* Resumes CPU clock (TSC) on all virtual CPUs.
1924	*
1925	* This is called by TM when the VM is started, restored, resumed or similar.
1926	*
1927	* @returns VBox status code.
1928	* @param pVM The cross context VM structure.
1929	* @param pVCpu The cross context CPU structure of the calling EMT.
1930	* @param uPausedTscValue The TSC value at the time of pausing.
1931	*/
1932	VMM_INT_DECL(int) NEMHCResumeCpuTickOnAll(PVMCC pVM, PVMCPUCC pVCpu, uint64_t uPausedTscValue)
1933	{
1934	// KVM_SET_CLOCK?
1935	RT_NOREF(pVM, pVCpu, uPausedTscValue);
1936	return VINF_SUCCESS;
1937	}
1938
1939
1940	VMM_INT_DECL(uint32_t) NEMHCGetFeatures(PVMCC pVM)
1941	{
1942	RT_NOREF(pVM);
1943	return NEM_FEAT_F_NESTED_PAGING
1944	\| NEM_FEAT_F_FULL_GST_EXEC
1945	\| NEM_FEAT_F_XSAVE_XRSTOR;
1946	}
1947
1948
1949
1950	/*********************************************************************************************************************************
1951	* Execution *
1952	*********************************************************************************************************************************/
1953
1954
1955	VMMR3_INT_DECL(bool) NEMR3CanExecuteGuest(PVM pVM, PVMCPU pVCpu)
1956	{
1957	/*
1958	* Only execute when the A20 gate is enabled as I cannot immediately
1959	* spot any A20 support in KVM.
1960	*/
1961	RT_NOREF(pVM);
1962	Assert(VM_IS_NEM_ENABLED(pVM));
1963	return PGMPhysIsA20Enabled(pVCpu);
1964	}
1965
1966
1967	bool nemR3NativeSetSingleInstruction(PVM pVM, PVMCPU pVCpu, bool fEnable)
1968	{
1969	NOREF(pVM); NOREF(pVCpu); NOREF(fEnable);
1970	return false;
1971	}
1972
1973
1974	void nemR3NativeNotifyFF(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
1975	{
1976	int rc = RTThreadPoke(pVCpu->hThread);
1977	LogFlow(("nemR3NativeNotifyFF: #%u -> %Rrc\n", pVCpu->idCpu, rc));
1978	AssertRC(rc);
1979	RT_NOREF(pVM, fFlags);
1980	}
1981
1982
1983	DECLHIDDEN(bool) nemR3NativeNotifyDebugEventChanged(PVM pVM, bool fUseDebugLoop)
1984	{
1985	RT_NOREF(pVM, fUseDebugLoop);
1986	return false;
1987	}
1988
1989
1990	DECLHIDDEN(bool) nemR3NativeNotifyDebugEventChangedPerCpu(PVM pVM, PVMCPU pVCpu, bool fUseDebugLoop)
1991	{
1992	RT_NOREF(pVM, pVCpu, fUseDebugLoop);
1993	return false;
1994	}
1995
1996
1997	/**
1998	* Deals with pending interrupt FFs prior to executing guest code.
1999	*/
2000	static VBOXSTRICTRC nemHCLnxHandleInterruptFF(PVM pVM, PVMCPU pVCpu, struct kvm_run *pRun)
2001	{
2002	RT_NOREF_PV(pVM);
2003
2004	/*
2005	* Do not doing anything if TRPM has something pending already as we can
2006	* only inject one event per KVM_RUN call. This can only happend if we
2007	* can directly from the loop in EM, so the inhibit bits must be internal.
2008	*/
2009	if (!TRPMHasTrap(pVCpu))
2010	{ /* semi likely */ }
2011	else
2012	{
2013	Assert(!(pVCpu->cpum.GstCtx.fExtrn & (CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI)));
2014	Log8(("nemHCLnxHandleInterruptFF: TRPM has an pending event already\n"));
2015	return VINF_SUCCESS;
2016	}
2017
2018	/*
2019	* First update APIC. We ASSUME this won't need TPR/CR8.
2020	*/
2021	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
2022	{
2023	APICUpdatePendingInterrupts(pVCpu);
2024	if (!VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC
2025	\| VMCPU_FF_INTERRUPT_NMI \| VMCPU_FF_INTERRUPT_SMI))
2026	return VINF_SUCCESS;
2027	}
2028
2029	/*
2030	* We don't currently implement SMIs.
2031	*/
2032	AssertReturn(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI), VERR_NEM_IPE_0);
2033
2034	/*
2035	* In KVM the CPUMCTX_EXTRN_INHIBIT_INT and CPUMCTX_EXTRN_INHIBIT_NMI states
2036	* are tied together with interrupt and NMI delivery, so we must get and
2037	* synchronize these all in one go and set both CPUMCTX_EXTRN_INHIBIT_XXX flags.
2038	* If we don't we may lose the interrupt/NMI we marked pending here when the
2039	* state is exported again before execution.
2040	*/
2041	struct kvm_vcpu_events KvmEvents = {0};
2042	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_VCPU_EVENTS, &KvmEvents);
2043	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_5);
2044
2045	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_RIP))
2046	pRun->s.regs.regs.rip = pVCpu->cpum.GstCtx.rip;
2047
2048	KvmEvents.flags \|= KVM_VCPUEVENT_VALID_SHADOW;
2049	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_INHIBIT_INT))
2050	KvmEvents.interrupt.shadow = !CPUMIsInInterruptShadowWithUpdate(&pVCpu->cpum.GstCtx) ? 0
2051	: KVM_X86_SHADOW_INT_MOV_SS \| KVM_X86_SHADOW_INT_STI;
2052	else
2053	CPUMUpdateInterruptShadowEx(&pVCpu->cpum.GstCtx, KvmEvents.interrupt.shadow != 0, pRun->s.regs.regs.rip);
2054
2055	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_INHIBIT_NMI))
2056	KvmEvents.nmi.masked = CPUMAreInterruptsInhibitedByNmi(&pVCpu->cpum.GstCtx);
2057	else
2058	CPUMUpdateInterruptInhibitingByNmi(&pVCpu->cpum.GstCtx, KvmEvents.nmi.masked != 0);
2059
2060	/* KVM will own the INT + NMI inhibit state soon: */
2061	pVCpu->cpum.GstCtx.fExtrn = (pVCpu->cpum.GstCtx.fExtrn & ~CPUMCTX_EXTRN_KEEPER_MASK)
2062	\| CPUMCTX_EXTRN_KEEPER_NEM \| CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI;
2063
2064	/*
2065	* NMI? Try deliver it first.
2066	*/
2067	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI))
2068	{
2069	#if 0
2070	int rcLnx = ioctl(pVCpu->nem.s.fdVm, KVM_NMI, 0UL);
2071	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_5);
2072	#else
2073	KvmEvents.flags \|= KVM_VCPUEVENT_VALID_NMI_PENDING;
2074	KvmEvents.nmi.pending = 1;
2075	#endif
2076	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
2077	Log8(("Queuing NMI on %u\n", pVCpu->idCpu));
2078	}
2079
2080	/*
2081	* APIC or PIC interrupt?
2082	*/
2083	if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC))
2084	{
2085	if (pRun->s.regs.regs.rflags & X86_EFL_IF)
2086	{
2087	if (KvmEvents.interrupt.shadow == 0)
2088	{
2089	/*
2090	* If CR8 is in KVM, update the VBox copy so PDMGetInterrupt will
2091	* work correctly.
2092	*/
2093	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_APIC_TPR)
2094	APICSetTpr(pVCpu, (uint8_t)pRun->cr8 << 4);
2095
2096	uint8_t bInterrupt;
2097	int rc = PDMGetInterrupt(pVCpu, &bInterrupt);
2098	if (RT_SUCCESS(rc))
2099	{
2100	Assert(KvmEvents.interrupt.injected == false);
2101	#if 0
2102	int rcLnx = ioctl(pVCpu->nem.s.fdVm, KVM_INTERRUPT, (unsigned long)bInterrupt);
2103	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_5);
2104	#else
2105	KvmEvents.interrupt.nr = bInterrupt;
2106	KvmEvents.interrupt.soft = false;
2107	KvmEvents.interrupt.injected = true;
2108	#endif
2109	Log8(("Queuing interrupt %#x on %u: %04x:%08RX64 efl=%#x\n", bInterrupt, pVCpu->idCpu,
2110	pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.eflags));
2111	}
2112	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR) /** @todo this isn't extremely efficient if we get a lot of exits... */
2113	Log8(("VERR_APIC_INTR_MASKED_BY_TPR\n")); /* We'll get a TRP exit - no interrupt window needed. */
2114	else
2115	Log8(("PDMGetInterrupt failed -> %Rrc\n", rc));
2116	}
2117	else
2118	{
2119	pRun->request_interrupt_window = 1;
2120	Log8(("Interrupt window pending on %u (#2)\n", pVCpu->idCpu));
2121	}
2122	}
2123	else
2124	{
2125	pRun->request_interrupt_window = 1;
2126	Log8(("Interrupt window pending on %u (#1)\n", pVCpu->idCpu));
2127	}
2128	}
2129
2130	/*
2131	* Now, update the state.
2132	*/
2133	/** @todo skip when possible... */
2134	rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_SET_VCPU_EVENTS, &KvmEvents);
2135	AssertLogRelMsgReturn(rcLnx == 0, ("rcLnx=%d errno=%d\n", rcLnx, errno), VERR_NEM_IPE_5);
2136
2137	return VINF_SUCCESS;
2138	}
2139
2140
2141	/**
2142	* Handles KVM_EXIT_INTERNAL_ERROR.
2143	*/
2144	static VBOXSTRICTRC nemR3LnxHandleInternalError(PVMCPU pVCpu, struct kvm_run *pRun)
2145	{
2146	Log(("NEM: KVM_EXIT_INTERNAL_ERROR! suberror=%#x (%d) ndata=%u data=%.*Rhxs\n", pRun->internal.suberror,
2147	pRun->internal.suberror, pRun->internal.ndata, sizeof(pRun->internal.data), &pRun->internal.data[0]));
2148
2149	/*
2150	* Deal with each suberror, returning if we don't want IEM to handle it.
2151	*/
2152	switch (pRun->internal.suberror)
2153	{
2154	case KVM_INTERNAL_ERROR_EMULATION:
2155	{
2156	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_INTERNAL_ERROR_EMULATION),
2157	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2158	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitInternalErrorEmulation);
2159	break;
2160	}
2161
2162	case KVM_INTERNAL_ERROR_SIMUL_EX:
2163	case KVM_INTERNAL_ERROR_DELIVERY_EV:
2164	case KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON:
2165	default:
2166	{
2167	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_INTERNAL_ERROR_FATAL),
2168	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2169	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitInternalErrorFatal);
2170	const char *pszName;
2171	switch (pRun->internal.suberror)
2172	{
2173	case KVM_INTERNAL_ERROR_EMULATION: pszName = "KVM_INTERNAL_ERROR_EMULATION"; break;
2174	case KVM_INTERNAL_ERROR_SIMUL_EX: pszName = "KVM_INTERNAL_ERROR_SIMUL_EX"; break;
2175	case KVM_INTERNAL_ERROR_DELIVERY_EV: pszName = "KVM_INTERNAL_ERROR_DELIVERY_EV"; break;
2176	case KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON: pszName = "KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON"; break;
2177	default: pszName = "unknown"; break;
2178	}
2179	LogRel(("NEM: KVM_EXIT_INTERNAL_ERROR! suberror=%#x (%s) ndata=%u data=%.*Rhxs\n", pRun->internal.suberror, pszName,
2180	pRun->internal.ndata, sizeof(pRun->internal.data), &pRun->internal.data[0]));
2181	return VERR_NEM_IPE_0;
2182	}
2183	}
2184
2185	/*
2186	* Execute instruction in IEM and try get on with it.
2187	*/
2188	Log2(("nemR3LnxHandleInternalError: Executing instruction at %04x:%08RX64 in IEM\n",
2189	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip));
2190	VBOXSTRICTRC rcStrict = nemHCLnxImportState(pVCpu,
2191	IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_INHIBIT_INT
2192	\| CPUMCTX_EXTRN_INHIBIT_NMI,
2193	&pVCpu->cpum.GstCtx, pRun);
2194	if (RT_SUCCESS(rcStrict))
2195	rcStrict = IEMExecOne(pVCpu);
2196	return rcStrict;
2197	}
2198
2199
2200	/**
2201	* Handles KVM_EXIT_IO.
2202	*/
2203	static VBOXSTRICTRC nemHCLnxHandleExitIo(PVMCC pVM, PVMCPUCC pVCpu, struct kvm_run *pRun)
2204	{
2205	/*
2206	* Input validation.
2207	*/
2208	Assert(pRun->io.count > 0);
2209	Assert(pRun->io.size == 1 \|\| pRun->io.size == 2 \|\| pRun->io.size == 4);
2210	Assert(pRun->io.direction == KVM_EXIT_IO_IN \|\| pRun->io.direction == KVM_EXIT_IO_OUT);
2211	Assert(pRun->io.data_offset < pVM->nem.s.cbVCpuMmap);
2212	Assert(pRun->io.data_offset + pRun->io.size * pRun->io.count <= pVM->nem.s.cbVCpuMmap);
2213
2214	/*
2215	* We cannot easily act on the exit history here, because the I/O port
2216	* exit is stateful and the instruction will be completed in the next
2217	* KVM_RUN call. There seems no way to avoid this.
2218	*/
2219	EMHistoryAddExit(pVCpu,
2220	pRun->io.count == 1
2221	? ( pRun->io.direction == KVM_EXIT_IO_IN
2222	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_IO_PORT_READ)
2223	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_IO_PORT_WRITE))
2224	: ( pRun->io.direction == KVM_EXIT_IO_IN
2225	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_IO_PORT_STR_READ)
2226	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_IO_PORT_STR_WRITE)),
2227	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2228
2229	/*
2230	* Do the requested job.
2231	*/
2232	VBOXSTRICTRC rcStrict;
2233	RTPTRUNION uPtrData;
2234	uPtrData.pu8 = (uint8_t *)pRun + pRun->io.data_offset;
2235	if (pRun->io.count == 1)
2236	{
2237	if (pRun->io.direction == KVM_EXIT_IO_IN)
2238	{
2239	uint32_t uValue = 0;
2240	rcStrict = IOMIOPortRead(pVM, pVCpu, pRun->io.port, &uValue, pRun->io.size);
2241	Log4(("IOExit/%u: %04x:%08RX64: IN %#x LB %u -> %#x, rcStrict=%Rrc\n",
2242	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2243	pRun->io.port, pRun->io.size, uValue, VBOXSTRICTRC_VAL(rcStrict) ));
2244	if (IOM_SUCCESS(rcStrict))
2245	{
2246	if (pRun->io.size == 4)
2247	*uPtrData.pu32 = uValue;
2248	else if (pRun->io.size == 2)
2249	*uPtrData.pu16 = (uint16_t)uValue;
2250	else
2251	*uPtrData.pu8 = (uint8_t)uValue;
2252	}
2253	}
2254	else
2255	{
2256	uint32_t const uValue = pRun->io.size == 4 ? *uPtrData.pu32
2257	: pRun->io.size == 2 ? *uPtrData.pu16
2258	: *uPtrData.pu8;
2259	rcStrict = IOMIOPortWrite(pVM, pVCpu, pRun->io.port, uValue, pRun->io.size);
2260	Log4(("IOExit/%u: %04x:%08RX64: OUT %#x, %#x LB %u rcStrict=%Rrc\n",
2261	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2262	pRun->io.port, uValue, pRun->io.size, VBOXSTRICTRC_VAL(rcStrict) ));
2263	}
2264	}
2265	else
2266	{
2267	uint32_t cTransfers = pRun->io.count;
2268	if (pRun->io.direction == KVM_EXIT_IO_IN)
2269	{
2270	rcStrict = IOMIOPortReadString(pVM, pVCpu, pRun->io.port, uPtrData.pv, &cTransfers, pRun->io.size);
2271	Log4(("IOExit/%u: %04x:%08RX64: REP INS %#x LB %u * %#x times -> rcStrict=%Rrc cTransfers=%d\n",
2272	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2273	pRun->io.port, pRun->io.size, pRun->io.count, VBOXSTRICTRC_VAL(rcStrict), cTransfers ));
2274	}
2275	else
2276	{
2277	rcStrict = IOMIOPortWriteString(pVM, pVCpu, pRun->io.port, uPtrData.pv, &cTransfers, pRun->io.size);
2278	Log4(("IOExit/%u: %04x:%08RX64: REP OUTS %#x LB %u * %#x times -> rcStrict=%Rrc cTransfers=%d\n",
2279	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2280	pRun->io.port, pRun->io.size, pRun->io.count, VBOXSTRICTRC_VAL(rcStrict), cTransfers ));
2281	}
2282	Assert(cTransfers == 0);
2283	}
2284	return rcStrict;
2285	}
2286
2287
2288	/**
2289	* Handles KVM_EXIT_MMIO.
2290	*/
2291	static VBOXSTRICTRC nemHCLnxHandleExitMmio(PVMCC pVM, PVMCPUCC pVCpu, struct kvm_run *pRun)
2292	{
2293	/*
2294	* Input validation.
2295	*/
2296	Assert(pRun->mmio.len <= sizeof(pRun->mmio.data));
2297	Assert(pRun->mmio.is_write <= 1);
2298
2299	/*
2300	* We cannot easily act on the exit history here, because the MMIO port
2301	* exit is stateful and the instruction will be completed in the next
2302	* KVM_RUN call. There seems no way to circumvent this.
2303	*/
2304	EMHistoryAddExit(pVCpu,
2305	pRun->mmio.is_write
2306	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_MMIO_WRITE)
2307	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_MMIO_READ),
2308	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2309
2310	/*
2311	* Do the requested job.
2312	*/
2313	VBOXSTRICTRC rcStrict;
2314	if (pRun->mmio.is_write)
2315	{
2316	rcStrict = PGMPhysWrite(pVM, pRun->mmio.phys_addr, pRun->mmio.data, pRun->mmio.len, PGMACCESSORIGIN_HM);
2317	Log4(("MmioExit/%u: %04x:%08RX64: WRITE %#x LB %u, %.*Rhxs -> rcStrict=%Rrc\n",
2318	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2319	pRun->mmio.phys_addr, pRun->mmio.len, pRun->mmio.len, pRun->mmio.data, VBOXSTRICTRC_VAL(rcStrict) ));
2320	}
2321	else
2322	{
2323	rcStrict = PGMPhysRead(pVM, pRun->mmio.phys_addr, pRun->mmio.data, pRun->mmio.len, PGMACCESSORIGIN_HM);
2324	Log4(("MmioExit/%u: %04x:%08RX64: READ %#x LB %u -> %.*Rhxs rcStrict=%Rrc\n",
2325	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2326	pRun->mmio.phys_addr, pRun->mmio.len, pRun->mmio.len, pRun->mmio.data, VBOXSTRICTRC_VAL(rcStrict) ));
2327	}
2328	return rcStrict;
2329	}
2330
2331
2332	/**
2333	* Handles KVM_EXIT_RDMSR
2334	*/
2335	static VBOXSTRICTRC nemHCLnxHandleExitRdMsr(PVMCPUCC pVCpu, struct kvm_run *pRun)
2336	{
2337	/*
2338	* Input validation.
2339	*/
2340	Assert( pRun->msr.reason == KVM_MSR_EXIT_REASON_INVAL
2341	\|\| pRun->msr.reason == KVM_MSR_EXIT_REASON_UNKNOWN
2342	\|\| pRun->msr.reason == KVM_MSR_EXIT_REASON_FILTER);
2343
2344	/*
2345	* We cannot easily act on the exit history here, because the MSR exit is
2346	* stateful and the instruction will be completed in the next KVM_RUN call.
2347	* There seems no way to circumvent this.
2348	*/
2349	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_MSR_READ),
2350	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2351
2352	/*
2353	* Do the requested job.
2354	*/
2355	uint64_t uValue = 0;
2356	VBOXSTRICTRC rcStrict = CPUMQueryGuestMsr(pVCpu, pRun->msr.index, &uValue);
2357	pRun->msr.data = uValue;
2358	if (rcStrict != VERR_CPUM_RAISE_GP_0)
2359	{
2360	Log3(("MsrRead/%u: %04x:%08RX64: msr=%#010x (reason=%#x) -> %#RX64 rcStrict=%Rrc\n", pVCpu->idCpu,
2361	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip, pRun->msr.index, pRun->msr.reason, uValue, VBOXSTRICTRC_VAL(rcStrict) ));
2362	pRun->msr.error = 0;
2363	}
2364	else
2365	{
2366	Log3(("MsrRead/%u: %04x:%08RX64: msr=%#010x (reason%#x)-> %#RX64 rcStrict=#GP!\n", pVCpu->idCpu,
2367	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip, pRun->msr.index, pRun->msr.reason, uValue));
2368	pRun->msr.error = 1;
2369	rcStrict = VINF_SUCCESS;
2370	}
2371	return rcStrict;
2372	}
2373
2374
2375	/**
2376	* Handles KVM_EXIT_WRMSR
2377	*/
2378	static VBOXSTRICTRC nemHCLnxHandleExitWrMsr(PVMCPUCC pVCpu, struct kvm_run *pRun)
2379	{
2380	/*
2381	* Input validation.
2382	*/
2383	Assert( pRun->msr.reason == KVM_MSR_EXIT_REASON_INVAL
2384	\|\| pRun->msr.reason == KVM_MSR_EXIT_REASON_UNKNOWN
2385	\|\| pRun->msr.reason == KVM_MSR_EXIT_REASON_FILTER);
2386
2387	/*
2388	* We cannot easily act on the exit history here, because the MSR exit is
2389	* stateful and the instruction will be completed in the next KVM_RUN call.
2390	* There seems no way to circumvent this.
2391	*/
2392	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM, EMEXITTYPE_MSR_WRITE),
2393	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2394
2395	/*
2396	* Do the requested job.
2397	*/
2398	VBOXSTRICTRC rcStrict = CPUMSetGuestMsr(pVCpu, pRun->msr.index, pRun->msr.data);
2399	if (rcStrict != VERR_CPUM_RAISE_GP_0)
2400	{
2401	Log3(("MsrWrite/%u: %04x:%08RX64: msr=%#010x := %#RX64 (reason=%#x) -> rcStrict=%Rrc\n", pVCpu->idCpu,
2402	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip, pRun->msr.index, pRun->msr.data, pRun->msr.reason, VBOXSTRICTRC_VAL(rcStrict) ));
2403	pRun->msr.error = 0;
2404	}
2405	else
2406	{
2407	Log3(("MsrWrite/%u: %04x:%08RX64: msr=%#010x := %#RX64 (reason%#x)-> rcStrict=#GP!\n", pVCpu->idCpu,
2408	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip, pRun->msr.index, pRun->msr.data, pRun->msr.reason));
2409	pRun->msr.error = 1;
2410	rcStrict = VINF_SUCCESS;
2411	}
2412	return rcStrict;
2413	}
2414
2415
2416
2417	static VBOXSTRICTRC nemHCLnxHandleExit(PVMCC pVM, PVMCPUCC pVCpu, struct kvm_run pRun, bool pfStatefulExit)
2418	{
2419	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitTotal);
2420	switch (pRun->exit_reason)
2421	{
2422	case KVM_EXIT_EXCEPTION:
2423	AssertFailed();
2424	break;
2425
2426	case KVM_EXIT_IO:
2427	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitIo);
2428	*pfStatefulExit = true;
2429	return nemHCLnxHandleExitIo(pVM, pVCpu, pRun);
2430
2431	case KVM_EXIT_MMIO:
2432	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitMmio);
2433	*pfStatefulExit = true;
2434	return nemHCLnxHandleExitMmio(pVM, pVCpu, pRun);
2435
2436	case KVM_EXIT_IRQ_WINDOW_OPEN:
2437	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_INTTERRUPT_WINDOW),
2438	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2439	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitIrqWindowOpen);
2440	Log5(("IrqWinOpen/%u: %d\n", pVCpu->idCpu, pRun->request_interrupt_window));
2441	pRun->request_interrupt_window = 0;
2442	return VINF_SUCCESS;
2443
2444	case KVM_EXIT_SET_TPR:
2445	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitSetTpr);
2446	AssertFailed();
2447	break;
2448
2449	case KVM_EXIT_TPR_ACCESS:
2450	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitTprAccess);
2451	AssertFailed();
2452	break;
2453
2454	case KVM_EXIT_X86_RDMSR:
2455	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitRdMsr);
2456	*pfStatefulExit = true;
2457	return nemHCLnxHandleExitRdMsr(pVCpu, pRun);
2458
2459	case KVM_EXIT_X86_WRMSR:
2460	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitWrMsr);
2461	*pfStatefulExit = true;
2462	return nemHCLnxHandleExitWrMsr(pVCpu, pRun);
2463
2464	case KVM_EXIT_HLT:
2465	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_HALT),
2466	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2467	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitHalt);
2468	Log5(("Halt/%u\n", pVCpu->idCpu));
2469	return VINF_EM_HALT;
2470
2471	case KVM_EXIT_INTR: /* EINTR */
2472	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_INTERRUPTED),
2473	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2474	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitIntr);
2475	Log5(("Intr/%u\n", pVCpu->idCpu));
2476	return VINF_SUCCESS;
2477
2478	case KVM_EXIT_HYPERCALL:
2479	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitHypercall);
2480	AssertFailed();
2481	break;
2482
2483	case KVM_EXIT_DEBUG:
2484	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitDebug);
2485	AssertFailed();
2486	break;
2487
2488	case KVM_EXIT_SYSTEM_EVENT:
2489	AssertFailed();
2490	break;
2491	case KVM_EXIT_IOAPIC_EOI:
2492	AssertFailed();
2493	break;
2494	case KVM_EXIT_HYPERV:
2495	AssertFailed();
2496	break;
2497
2498	case KVM_EXIT_DIRTY_RING_FULL:
2499	AssertFailed();
2500	break;
2501	case KVM_EXIT_AP_RESET_HOLD:
2502	AssertFailed();
2503	break;
2504	case KVM_EXIT_X86_BUS_LOCK:
2505	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatExitBusLock);
2506	AssertFailed();
2507	break;
2508
2509
2510	case KVM_EXIT_SHUTDOWN:
2511	AssertFailed();
2512	break;
2513
2514	case KVM_EXIT_FAIL_ENTRY:
2515	LogRel(("NEM: KVM_EXIT_FAIL_ENTRY! hardware_entry_failure_reason=%#x cpu=%#x\n",
2516	pRun->fail_entry.hardware_entry_failure_reason, pRun->fail_entry.cpu));
2517	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_NEM, NEMEXITTYPE_FAILED_ENTRY),
2518	pRun->s.regs.regs.rip + pRun->s.regs.sregs.cs.base, ASMReadTSC());
2519	return VERR_NEM_IPE_1;
2520
2521	case KVM_EXIT_INTERNAL_ERROR:
2522	/* we're counting sub-reasons inside the function. */
2523	return nemR3LnxHandleInternalError(pVCpu, pRun);
2524
2525	/*
2526	* Foreign and unknowns.
2527	*/
2528	case KVM_EXIT_NMI:
2529	AssertLogRelMsgFailedReturn(("KVM_EXIT_NMI on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2530	case KVM_EXIT_EPR:
2531	AssertLogRelMsgFailedReturn(("KVM_EXIT_EPR on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2532	case KVM_EXIT_WATCHDOG:
2533	AssertLogRelMsgFailedReturn(("KVM_EXIT_WATCHDOG on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2534	case KVM_EXIT_ARM_NISV:
2535	AssertLogRelMsgFailedReturn(("KVM_EXIT_ARM_NISV on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2536	case KVM_EXIT_S390_STSI:
2537	AssertLogRelMsgFailedReturn(("KVM_EXIT_S390_STSI on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2538	case KVM_EXIT_S390_TSCH:
2539	AssertLogRelMsgFailedReturn(("KVM_EXIT_S390_TSCH on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2540	case KVM_EXIT_OSI:
2541	AssertLogRelMsgFailedReturn(("KVM_EXIT_OSI on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2542	case KVM_EXIT_PAPR_HCALL:
2543	AssertLogRelMsgFailedReturn(("KVM_EXIT_PAPR_HCALL on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2544	case KVM_EXIT_S390_UCONTROL:
2545	AssertLogRelMsgFailedReturn(("KVM_EXIT_S390_UCONTROL on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2546	case KVM_EXIT_DCR:
2547	AssertLogRelMsgFailedReturn(("KVM_EXIT_DCR on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2548	case KVM_EXIT_S390_SIEIC:
2549	AssertLogRelMsgFailedReturn(("KVM_EXIT_S390_SIEIC on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2550	case KVM_EXIT_S390_RESET:
2551	AssertLogRelMsgFailedReturn(("KVM_EXIT_S390_RESET on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2552	case KVM_EXIT_UNKNOWN:
2553	AssertLogRelMsgFailedReturn(("KVM_EXIT_UNKNOWN on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2554	case KVM_EXIT_XEN:
2555	AssertLogRelMsgFailedReturn(("KVM_EXIT_XEN on VCpu #%u at %04x:%RX64!\n", pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2556	default:
2557	AssertLogRelMsgFailedReturn(("Unknown exit reason %u on VCpu #%u at %04x:%RX64!\n", pRun->exit_reason, pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip), VERR_NEM_IPE_1);
2558	}
2559
2560	RT_NOREF(pVM, pVCpu, pRun);
2561	return VERR_NOT_IMPLEMENTED;
2562	}
2563
2564
2565	VBOXSTRICTRC nemR3NativeRunGC(PVM pVM, PVMCPU pVCpu)
2566	{
2567	/*
2568	* Try switch to NEM runloop state.
2569	*/
2570	if (VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC_NEM, VMCPUSTATE_STARTED))
2571	{ /* likely */ }
2572	else
2573	{
2574	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC_NEM, VMCPUSTATE_STARTED_EXEC_NEM_CANCELED);
2575	LogFlow(("NEM/%u: returning immediately because canceled\n", pVCpu->idCpu));
2576	return VINF_SUCCESS;
2577	}
2578
2579	/*
2580	* The run loop.
2581	*/
2582	struct kvm_run * const pRun = pVCpu->nem.s.pRun;
2583	const bool fSingleStepping = DBGFIsStepping(pVCpu);
2584	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
2585	bool fStatefulExit = false; /* For MMIO and IO exits. */
2586	for (unsigned iLoop = 0;; iLoop++)
2587	{
2588	/*
2589	* Pending interrupts or such? Need to check and deal with this prior
2590	* to the state syncing.
2591	*/
2592	if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_UPDATE_APIC \| VMCPU_FF_INTERRUPT_PIC
2593	\| VMCPU_FF_INTERRUPT_NMI \| VMCPU_FF_INTERRUPT_SMI))
2594	{
2595	/* Try inject interrupt. */
2596	rcStrict = nemHCLnxHandleInterruptFF(pVM, pVCpu, pRun);
2597	if (rcStrict == VINF_SUCCESS)
2598	{ /* likely */ }
2599	else
2600	{
2601	LogFlow(("NEM/%u: breaking: nemHCLnxHandleInterruptFF -> %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict) ));
2602	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatBreakOnStatus);
2603	break;
2604	}
2605	}
2606
2607	/*
2608	* Do not execute in KVM if the A20 isn't enabled.
2609	*/
2610	if (PGMPhysIsA20Enabled(pVCpu))
2611	{ /* likely */ }
2612	else
2613	{
2614	rcStrict = VINF_EM_RESCHEDULE_REM;
2615	LogFlow(("NEM/%u: breaking: A20 disabled\n", pVCpu->idCpu));
2616	break;
2617	}
2618
2619	/*
2620	* Ensure KVM has the whole state.
2621	*/
2622	if ((pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_ALL) != CPUMCTX_EXTRN_ALL)
2623	{
2624	int rc2 = nemHCLnxExportState(pVM, pVCpu, &pVCpu->cpum.GstCtx, pRun);
2625	AssertRCReturn(rc2, rc2);
2626	}
2627
2628	/*
2629	* Poll timers and run for a bit.
2630	*
2631	* With the VID approach (ring-0 or ring-3) we can specify a timeout here,
2632	* so we take the time of the next timer event and uses that as a deadline.
2633	* The rounding heuristics are "tuned" so that rhel5 (1K timer) will boot fine.
2634	*/
2635	/** @todo See if we cannot optimize this TMTimerPollGIP by only redoing
2636	* the whole polling job when timers have changed... */
2637	uint64_t offDeltaIgnored;
2638	uint64_t const nsNextTimerEvt = TMTimerPollGIP(pVM, pVCpu, &offDeltaIgnored); NOREF(nsNextTimerEvt);
2639	if ( !VM_FF_IS_ANY_SET(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
2640	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
2641	{
2642	if (VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC_NEM_WAIT, VMCPUSTATE_STARTED_EXEC_NEM))
2643	{
2644	LogFlow(("NEM/%u: Entry @ %04x:%08RX64 IF=%d EFL=%#RX64 SS:RSP=%04x:%08RX64 cr0=%RX64\n",
2645	pVCpu->idCpu, pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip,
2646	!!(pRun->s.regs.regs.rflags & X86_EFL_IF), pRun->s.regs.regs.rflags,
2647	pRun->s.regs.sregs.ss.selector, pRun->s.regs.regs.rsp, pRun->s.regs.sregs.cr0));
2648	TMNotifyStartOfExecution(pVM, pVCpu);
2649
2650	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_RUN, 0UL);
2651
2652	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC_NEM, VMCPUSTATE_STARTED_EXEC_NEM_WAIT);
2653	TMNotifyEndOfExecution(pVM, pVCpu, ASMReadTSC());
2654
2655	#ifdef LOG_ENABLED
2656	if (LogIsFlowEnabled())
2657	{
2658	struct kvm_mp_state MpState = {UINT32_MAX};
2659	ioctl(pVCpu->nem.s.fdVCpu, KVM_GET_MP_STATE, &MpState);
2660	LogFlow(("NEM/%u: Exit @ %04x:%08RX64 IF=%d EFL=%#RX64 CR8=%#x Reason=%#x IrqReady=%d Flags=%#x %#lx\n", pVCpu->idCpu,
2661	pRun->s.regs.sregs.cs.selector, pRun->s.regs.regs.rip, pRun->if_flag,
2662	pRun->s.regs.regs.rflags, pRun->s.regs.sregs.cr8, pRun->exit_reason,
2663	pRun->ready_for_interrupt_injection, pRun->flags, MpState.mp_state));
2664	}
2665	#endif
2666	fStatefulExit = false;
2667	if (RT_LIKELY(rcLnx == 0 \|\| errno == EINTR))
2668	{
2669	/*
2670	* Deal with the exit.
2671	*/
2672	rcStrict = nemHCLnxHandleExit(pVM, pVCpu, pRun, &fStatefulExit);
2673	if (rcStrict == VINF_SUCCESS)
2674	{ /* hopefully likely */ }
2675	else
2676	{
2677	LogFlow(("NEM/%u: breaking: nemHCLnxHandleExit -> %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict) ));
2678	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatBreakOnStatus);
2679	break;
2680	}
2681	}
2682	else
2683	{
2684	int rc2 = RTErrConvertFromErrno(errno);
2685	AssertLogRelMsgFailedReturn(("KVM_RUN failed: rcLnx=%d errno=%u rc=%Rrc\n", rcLnx, errno, rc2), rc2);
2686	}
2687
2688	/*
2689	* If no relevant FFs are pending, loop.
2690	*/
2691	if ( !VM_FF_IS_ANY_SET( pVM, !fSingleStepping ? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
2692	&& !VMCPU_FF_IS_ANY_SET(pVCpu, !fSingleStepping ? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
2693	{ /* likely */ }
2694	else
2695	{
2696
2697	/** @todo Try handle pending flags, not just return to EM loops. Take care
2698	* not to set important RCs here unless we've handled an exit. */
2699	LogFlow(("NEM/%u: breaking: pending FF (%#x / %#RX64)\n",
2700	pVCpu->idCpu, pVM->fGlobalForcedActions, (uint64_t)pVCpu->fLocalForcedActions));
2701	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatBreakOnFFPost);
2702	break;
2703	}
2704	}
2705	else
2706	{
2707	LogFlow(("NEM/%u: breaking: canceled %d (pre exec)\n", pVCpu->idCpu, VMCPU_GET_STATE(pVCpu) ));
2708	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatBreakOnCancel);
2709	break;
2710	}
2711	}
2712	else
2713	{
2714	LogFlow(("NEM/%u: breaking: pending FF (pre exec)\n", pVCpu->idCpu));
2715	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatBreakOnFFPre);
2716	break;
2717	}
2718	} /* the run loop */
2719
2720
2721	/*
2722	* If the last exit was stateful, commit the state we provided before
2723	* returning to the EM loop so we have a consistent state and can safely
2724	* be rescheduled and whatnot. This may require us to make multiple runs
2725	* for larger MMIO and I/O operations. Sigh^3.
2726	*
2727	* Note! There is no 'ing way to reset the kernel side completion callback
2728	* for these stateful i/o exits. Very annoying interface.
2729	*/
2730	/** @todo check how this works with string I/O and string MMIO. */
2731	if (fStatefulExit && RT_SUCCESS(rcStrict))
2732	{
2733	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatFlushExitOnReturn);
2734	uint32_t const uOrgExit = pRun->exit_reason;
2735	for (uint32_t i = 0; ; i++)
2736	{
2737	pRun->immediate_exit = 1;
2738	int rcLnx = ioctl(pVCpu->nem.s.fdVCpu, KVM_RUN, 0UL);
2739	Log(("NEM/%u: Flushed stateful exit -> %d/%d exit_reason=%d\n", pVCpu->idCpu, rcLnx, errno, pRun->exit_reason));
2740	if (rcLnx == -1 && errno == EINTR)
2741	{
2742	switch (i)
2743	{
2744	case 0: STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatFlushExitOnReturn1Loop); break;
2745	case 1: STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatFlushExitOnReturn2Loops); break;
2746	case 2: STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatFlushExitOnReturn3Loops); break;
2747	default: STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatFlushExitOnReturn4PlusLoops); break;
2748	}
2749	break;
2750	}
2751	AssertLogRelMsgBreakStmt(rcLnx == 0 && pRun->exit_reason == uOrgExit,
2752	("rcLnx=%d errno=%d exit_reason=%d uOrgExit=%d\n", rcLnx, errno, pRun->exit_reason, uOrgExit),
2753	rcStrict = VERR_NEM_IPE_6);
2754	VBOXSTRICTRC rcStrict2 = nemHCLnxHandleExit(pVM, pVCpu, pRun, &fStatefulExit);
2755	if (rcStrict2 == VINF_SUCCESS \|\| rcStrict2 == rcStrict)
2756	{ /* likely */ }
2757	else if (RT_FAILURE(rcStrict2))
2758	{
2759	rcStrict = rcStrict2;
2760	break;
2761	}
2762	else
2763	{
2764	AssertLogRelMsgBreakStmt(rcStrict == VINF_SUCCESS,
2765	("rcStrict=%Rrc rcStrict2=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict), VBOXSTRICTRC_VAL(rcStrict2)),
2766	rcStrict = VERR_NEM_IPE_7);
2767	rcStrict = rcStrict2;
2768	}
2769	}
2770	pRun->immediate_exit = 0;
2771	}
2772
2773	/*
2774	* If the CPU is running, make sure to stop it before we try sync back the
2775	* state and return to EM. We don't sync back the whole state if we can help it.
2776	*/
2777	if (!VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_EXEC_NEM))
2778	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_EXEC_NEM_CANCELED);
2779
2780	if (pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_ALL)
2781	{
2782	/* Try anticipate what we might need. */
2783	uint64_t fImport = CPUMCTX_EXTRN_INHIBIT_INT \| CPUMCTX_EXTRN_INHIBIT_NMI /* Required for processing APIC,PIC,NMI & SMI FFs. */
2784	\| IEM_CPUMCTX_EXTRN_MUST_MASK /?/;
2785	if ( (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST)
2786	\|\| RT_FAILURE(rcStrict))
2787	fImport = CPUMCTX_EXTRN_ALL;
2788	# ifdef IN_RING0 /* Ring-3 I/O port access optimizations: */
2789	else if ( rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE
2790	\|\| rcStrict == VINF_EM_PENDING_R3_IOPORT_WRITE)
2791	fImport = CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RFLAGS;
2792	else if (rcStrict == VINF_EM_PENDING_R3_IOPORT_READ)
2793	fImport = CPUMCTX_EXTRN_RAX \| CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RFLAGS;
2794	# endif
2795	else if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_PIC \| VMCPU_FF_INTERRUPT_APIC
2796	\| VMCPU_FF_INTERRUPT_NMI \| VMCPU_FF_INTERRUPT_SMI))
2797	fImport \|= IEM_CPUMCTX_EXTRN_XCPT_MASK;
2798
2799	if (pVCpu->cpum.GstCtx.fExtrn & fImport)
2800	{
2801	int rc2 = nemHCLnxImportState(pVCpu, fImport, &pVCpu->cpum.GstCtx, pRun);
2802	if (RT_SUCCESS(rc2))
2803	pVCpu->cpum.GstCtx.fExtrn &= ~fImport;
2804	else if (RT_SUCCESS(rcStrict))
2805	rcStrict = rc2;
2806	if (!(pVCpu->cpum.GstCtx.fExtrn & CPUMCTX_EXTRN_ALL))
2807	pVCpu->cpum.GstCtx.fExtrn = 0;
2808	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatImportOnReturn);
2809	}
2810	else
2811	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatImportOnReturnSkipped);
2812	}
2813	else
2814	{
2815	pVCpu->cpum.GstCtx.fExtrn = 0;
2816	STAM_REL_COUNTER_INC(&pVCpu->nem.s.StatImportOnReturnSkipped);
2817	}
2818
2819	LogFlow(("NEM/%u: %04x:%08RX64 efl=%#08RX64 => %Rrc\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
2820	pVCpu->cpum.GstCtx.rflags, VBOXSTRICTRC_VAL(rcStrict) ));
2821	return rcStrict;
2822	}
2823
2824
2825	/** @page pg_nem_linux NEM/linux - Native Execution Manager, Linux.
2826	*
2827	* This is using KVM.
2828	*
2829	*/
2830

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source: vbox/trunk/src/VBox/VMM/VMMR3/NEMR3Native-linux.cpp@ 97178

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