| 1 | /* $Id: timesupref.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Time using SUPLib, the C Implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 | #if !defined(IN_GUEST) && !defined(RT_NO_GIP)
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| 38 |
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| 39 |
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| 40 | /*********************************************************************************************************************************
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| 41 | * Header Files *
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| 42 | *********************************************************************************************************************************/
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| 43 | #include <iprt/time.h>
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| 44 | #include "internal/iprt.h"
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| 45 |
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| 46 | #include <iprt/asm.h>
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| 47 | #include <iprt/asm-math.h>
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| 48 | #include <iprt/asm-amd64-x86.h>
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| 49 | #include <iprt/param.h>
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| 50 | #include <iprt/string.h>
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| 51 | #include <VBox/sup.h>
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| 52 | #ifdef IN_RC
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| 53 | # include <VBox/vmm/vmm.h>
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| 54 | # include <VBox/vmm/vm.h>
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| 55 | #endif
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| 56 | #include "internal/time.h"
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| 57 |
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| 58 |
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| 59 | #define TMPL_MODE_SYNC_INVAR_NO_DELTA 1
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| 60 | #define TMPL_MODE_SYNC_INVAR_WITH_DELTA 2
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| 61 | #define TMPL_MODE_ASYNC 3
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| 62 |
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| 63 |
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| 64 | /*
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| 65 | * Use the XCHG instruction for some kind of serialization.
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| 66 | */
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| 67 | #define TMPL_READ_FENCE() ASMReadFence()
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| 68 |
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| 69 | #undef TMPL_MODE
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| 70 | #define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
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| 71 | #undef TMPL_GET_CPU_METHOD
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| 72 | #define TMPL_GET_CPU_METHOD 0
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| 73 | #undef rtTimeNanoTSInternalRef
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| 74 | #define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarNoDelta
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| 75 | #include "timesupref.h"
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| 76 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarNoDelta);
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| 77 |
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| 78 | #ifdef IN_RING3
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| 79 |
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| 80 | # undef TMPL_MODE
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| 81 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 82 | # undef TMPL_GET_CPU_METHOD
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| 83 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 84 | # undef rtTimeNanoTSInternalRef
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| 85 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId
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| 86 | # include "timesupref.h"
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| 87 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseApicId);
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| 88 |
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| 89 | # undef TMPL_MODE
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| 90 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 91 | # undef TMPL_GET_CPU_METHOD
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| 92 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_0B
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| 93 | # undef rtTimeNanoTSInternalRef
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| 94 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseApicIdExt0B
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| 95 | # include "timesupref.h"
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| 96 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseApicIdExt0B);
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| 97 |
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| 98 | # undef TMPL_MODE
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| 99 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 100 | # undef TMPL_GET_CPU_METHOD
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| 101 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_8000001E
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| 102 | # undef rtTimeNanoTSInternalRef
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| 103 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseApicIdExt8000001E
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| 104 | # include "timesupref.h"
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| 105 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseApicIdExt8000001E);
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| 106 |
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| 107 | # undef TMPL_GET_CPU_METHOD
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| 108 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 109 | # undef rtTimeNanoTSInternalRef
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| 110 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp
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| 111 | # include "timesupref.h"
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| 112 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseRdtscp);
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| 113 |
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| 114 | # undef TMPL_GET_CPU_METHOD
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| 115 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 116 | # undef rtTimeNanoTSInternalRef
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| 117 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim
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| 118 | # include "timesupref.h"
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| 119 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDeltaUseIdtrLim);
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| 120 |
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| 121 | # undef TMPL_MODE
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| 122 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 123 | # undef TMPL_GET_CPU_METHOD
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| 124 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 125 | # undef rtTimeNanoTSInternalRef
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| 126 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseApicId
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| 127 | # include "timesupref.h"
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| 128 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseApicId);
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| 129 |
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| 130 | # undef TMPL_MODE
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| 131 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 132 | # undef TMPL_GET_CPU_METHOD
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| 133 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_0B
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| 134 | # undef rtTimeNanoTSInternalRef
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| 135 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseApicIdExt0B
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| 136 | # include "timesupref.h"
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| 137 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseApicIdExt0B);
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| 138 |
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| 139 | # undef TMPL_MODE
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| 140 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 141 | # undef TMPL_GET_CPU_METHOD
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| 142 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_8000001E
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| 143 | # undef rtTimeNanoTSInternalRef
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| 144 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseApicIdExt8000001E
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| 145 | # include "timesupref.h"
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| 146 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseApicIdExt8000001E);
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| 147 |
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| 148 | # undef TMPL_GET_CPU_METHOD
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| 149 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 150 | # undef rtTimeNanoTSInternalRef
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| 151 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseRdtscp
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| 152 | # include "timesupref.h"
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| 153 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseRdtscp);
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| 154 |
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| 155 | # undef TMPL_GET_CPU_METHOD
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| 156 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 157 | # undef rtTimeNanoTSInternalRef
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| 158 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseIdtrLim
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| 159 | # include "timesupref.h"
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| 160 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseIdtrLim);
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| 161 |
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| 162 | # undef TMPL_GET_CPU_METHOD
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| 163 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_GROUP_IN_CH_NUMBER_IN_CL
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| 164 | # undef rtTimeNanoTSInternalRef
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| 165 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsyncUseRdtscpGroupChNumCl
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| 166 | # include "timesupref.h"
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| 167 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsyncUseRdtscpGroupChNumCl);
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| 168 |
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| 169 | #else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
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| 170 |
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| 171 | # undef TMPL_MODE
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| 172 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 173 | # undef TMPL_GET_CPU_METHOD
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| 174 | # define TMPL_GET_CPU_METHOD UINT32_MAX
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| 175 | # undef rtTimeNanoTSInternalRef
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| 176 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacySyncInvarWithDelta
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| 177 | # include "timesupref.h"
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| 178 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacySyncInvarWithDelta);
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| 179 |
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| 180 | # undef TMPL_MODE
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| 181 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 182 | # undef rtTimeNanoTSInternalRef
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| 183 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLegacyAsync
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| 184 | # include "timesupref.h"
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| 185 | RT_EXPORT_SYMBOL(RTTimeNanoTSLegacyAsync);
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| 186 |
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| 187 | #endif
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| 188 |
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| 189 |
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| 190 | /*
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| 191 | * Use LFENCE for load serialization.
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| 192 | */
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| 193 | #undef TMPL_READ_FENCE
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| 194 | #define TMPL_READ_FENCE() ASMReadFenceSSE2()
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| 195 |
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| 196 | #undef TMPL_MODE
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| 197 | #define TMPL_MODE TMPL_MODE_SYNC_INVAR_NO_DELTA
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| 198 | #undef TMPL_GET_CPU_METHOD
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| 199 | #define TMPL_GET_CPU_METHOD 0
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| 200 | #undef rtTimeNanoTSInternalRef
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| 201 | #define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarNoDelta
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| 202 | #include "timesupref.h"
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| 203 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarNoDelta);
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| 204 |
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| 205 | #ifdef IN_RING3
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| 206 |
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| 207 | # undef TMPL_MODE
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| 208 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 209 | # undef TMPL_GET_CPU_METHOD
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| 210 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 211 | # undef rtTimeNanoTSInternalRef
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| 212 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId
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| 213 | # include "timesupref.h"
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| 214 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicId);
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| 215 |
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| 216 | # undef TMPL_MODE
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| 217 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 218 | # undef TMPL_GET_CPU_METHOD
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| 219 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_0B
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| 220 | # undef rtTimeNanoTSInternalRef
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| 221 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicIdExt0B
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| 222 | # include "timesupref.h"
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| 223 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicIdExt0B);
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| 224 |
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| 225 | # undef TMPL_MODE
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| 226 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 227 | # undef TMPL_GET_CPU_METHOD
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| 228 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_8000001E
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| 229 | # undef rtTimeNanoTSInternalRef
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| 230 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicIdExt8000001E
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| 231 | # include "timesupref.h"
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| 232 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseApicIdExt8000001E);
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| 233 |
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| 234 | # undef TMPL_GET_CPU_METHOD
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| 235 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 236 | # undef rtTimeNanoTSInternalRef
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| 237 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp
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| 238 | # include "timesupref.h"
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| 239 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseRdtscp);
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| 240 |
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| 241 | # undef TMPL_GET_CPU_METHOD
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| 242 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 243 | # undef rtTimeNanoTSInternalRef
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| 244 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim
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| 245 | # include "timesupref.h"
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| 246 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDeltaUseIdtrLim);
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| 247 |
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| 248 | # undef TMPL_MODE
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| 249 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 250 | # undef TMPL_GET_CPU_METHOD
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| 251 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID
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| 252 | # undef rtTimeNanoTSInternalRef
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| 253 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseApicId
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| 254 | # include "timesupref.h"
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| 255 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseApicId);
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| 256 |
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| 257 | # undef TMPL_MODE
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| 258 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 259 | # undef TMPL_GET_CPU_METHOD
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| 260 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_0B
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| 261 | # undef rtTimeNanoTSInternalRef
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| 262 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseApicIdExt0B
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| 263 | # include "timesupref.h"
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| 264 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseApicIdExt0B);
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| 265 |
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| 266 | # undef TMPL_MODE
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| 267 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 268 | # undef TMPL_GET_CPU_METHOD
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| 269 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_APIC_ID_EXT_8000001E
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| 270 | # undef rtTimeNanoTSInternalRef
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| 271 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseApicIdExt8000001E
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| 272 | # include "timesupref.h"
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| 273 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseApicIdExt8000001E);
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| 274 |
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| 275 | # undef TMPL_GET_CPU_METHOD
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| 276 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS
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| 277 | # undef rtTimeNanoTSInternalRef
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| 278 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseRdtscp
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| 279 | # include "timesupref.h"
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| 280 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseRdtscp);
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| 281 |
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| 282 | # undef TMPL_GET_CPU_METHOD
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| 283 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_IDTR_LIMIT_MASK_MAX_SET_CPUS
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| 284 | # undef rtTimeNanoTSInternalRef
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| 285 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseIdtrLim
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| 286 | # include "timesupref.h"
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| 287 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseIdtrLim);
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| 288 |
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| 289 | # undef TMPL_GET_CPU_METHOD
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| 290 | # define TMPL_GET_CPU_METHOD SUPGIPGETCPU_RDTSCP_GROUP_IN_CH_NUMBER_IN_CL
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| 291 | # undef rtTimeNanoTSInternalRef
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| 292 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsyncUseRdtscpGroupChNumCl
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| 293 | # include "timesupref.h"
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| 294 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsyncUseRdtscpGroupChNumCl);
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| 295 |
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| 296 | #else /* IN_RC || IN_RING0: Disable interrupts and call getter function. */
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| 297 |
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| 298 | # undef TMPL_MODE
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| 299 | # define TMPL_MODE TMPL_MODE_SYNC_INVAR_WITH_DELTA
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| 300 | # undef TMPL_GET_CPU_METHOD
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| 301 | # define TMPL_GET_CPU_METHOD UINT32_MAX
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| 302 | # undef rtTimeNanoTSInternalRef
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| 303 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceSyncInvarWithDelta
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| 304 | # include "timesupref.h"
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| 305 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceSyncInvarWithDelta);
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| 306 |
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| 307 | # undef TMPL_MODE
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| 308 | # define TMPL_MODE TMPL_MODE_ASYNC
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| 309 | # undef rtTimeNanoTSInternalRef
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| 310 | # define rtTimeNanoTSInternalRef RTTimeNanoTSLFenceAsync
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| 311 | # include "timesupref.h"
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| 312 | RT_EXPORT_SYMBOL(RTTimeNanoTSLFenceAsync);
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| 313 |
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| 314 | #endif
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| 315 |
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| 316 |
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| 317 | #endif /* !IN_GUEST && !RT_NO_GIP */
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| 318 |
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