/* $Id: GMM.cpp 6841 2008-02-07 10:17:16Z vboxsync $ */ /** @file * GMM - Global Memory Manager, ring-3 request wrappers. */ /* * Copyright (C) 2008 innotek GmbH * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_GMM #include #include #include #include #include #include #include #include #include /** * @see GMMR0InitialReservation */ GMMR3DECL(int) GMMR3InitialReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages, GMMOCPOLICY enmPolicy, GMMPRIORITY enmPriority) { GMMINITIALRESERVATIONREQ Req; Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; Req.Hdr.cbReq = sizeof(Req); Req.cBasePages = cBasePages; Req.cShadowPages = cShadowPages; Req.cFixedPages = cFixedPages; Req.enmPolicy = enmPolicy; Req.enmPriority = enmPriority; return SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_INITIAL_RESERVATION, 0, &Req.Hdr); } /** * @see GMMR0UpdateReservation */ GMMR3DECL(int) GMMR3UpdateReservation(PVM pVM, uint64_t cBasePages, uint32_t cShadowPages, uint32_t cFixedPages) { GMMUPDATERESERVATIONREQ Req; Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; Req.Hdr.cbReq = sizeof(Req); Req.cBasePages = cBasePages; Req.cShadowPages = cShadowPages; Req.cFixedPages = cFixedPages; return SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_UPDATE_RESERVATION, 0, &Req.Hdr); } /** * Prepares a GMMR0AllocatePages request. * * @returns VINF_SUCCESS or VERR_NO_TMP_MEMORY. * @param pVM Pointer to the shared VM structure. * @param[out] ppReq Where to store the pointer to the request packet. * @param cPages The number of pages that's to be allocated. * @param enmAccount The account to charge. */ GMMR3DECL(int) GMMR3AllocatePagesPrepare(PVM pVM, PGMMALLOCATEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount) { uint32_t cb = RT_OFFSETOF(GMMALLOCATEPAGESREQ, aPages[cPages]); PGMMALLOCATEPAGESREQ pReq = (PGMMALLOCATEPAGESREQ)RTMemTmpAllocZ(cb); if (!pReq) return VERR_NO_TMP_MEMORY; pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; pReq->Hdr.cbReq = cb; pReq->enmAccount = enmAccount; pReq->cPages = cPages; NOREF(pVM); return VINF_SUCCESS; } /** * Performs a GMMR0AllocatePages request. * This will call VMSetError on failure. * * @returns VBox status code. * @param pVM Pointer to the shared VM structure. * @param pReq Pointer to the request (returned by GMMR3AllocatePagesPrepare). */ GMMR3DECL(int) GMMR3AllocatePagesPerform(PVM pVM, PGMMALLOCATEPAGESREQ pReq) { for (unsigned i = 0; ; i++) { int rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_ALLOCATE_PAGES, 0, &pReq->Hdr); if (RT_SUCCESS(rc)) return rc; if (rc != VERR_GMM_SEED_ME) return VMSetError(pVM, rc, RT_SRC_POS, N_("GMMR0AllocatePages failed to allocate %u pages"), pReq->cPages); Assert(i < pReq->cPages); /* * Seed another chunk. */ void *pvChunk; rc = SUPPageAlloc(GMM_CHUNK_SIZE >> PAGE_SHIFT, &pvChunk); if (VBOX_FAILURE(rc)) return VMSetError(pVM, rc, RT_SRC_POS, N_("Out of memory (SUPPageAlloc) seeding a %u pages allocation request"), pReq->cPages); rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_SEED_CHUNK, (uintptr_t)pvChunk, NULL); if (RT_FAILURE(rc)) return VMSetError(pVM, rc, RT_SRC_POS, N_("GMM seeding failed")); } } /** * Cleans up a GMMR0AllocatePages request. * @param pReq Pointer to the request (returned by GMMR3AllocatePagesPrepare). */ GMMR3DECL(void) GMMR3AllocatePagesCleanup(PGMMALLOCATEPAGESREQ pReq) { RTMemTmpFree(pReq); } /** * Prepares a GMMR0FreePages request. * * @returns VINF_SUCCESS or VERR_NO_TMP_MEMORY. * @param pVM Pointer to the shared VM structure. * @param[out] ppReq Where to store the pointer to the request packet. * @param cPages The number of pages that's to be freed. * @param enmAccount The account to charge. */ GMMR3DECL(int) GMMR3FreePagesPrepare(PVM pVM, PGMMFREEPAGESREQ *ppReq, uint32_t cPages, GMMACCOUNT enmAccount) { uint32_t cb = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[cPages]); PGMMFREEPAGESREQ pReq = (PGMMFREEPAGESREQ)RTMemTmpAllocZ(cb); if (!pReq) return VERR_NO_TMP_MEMORY; pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; pReq->Hdr.cbReq = cb; pReq->enmAccount = enmAccount; pReq->cPages = cPages; NOREF(pVM); return VINF_SUCCESS; } /** * Performs a GMMR0FreePages request. * This will call VMSetError on failure. * * @returns VBox status code. * @param pVM Pointer to the shared VM structure. * @param pReq Pointer to the request (returned by GMMR3FreePagesPrepare). */ GMMR3DECL(int) GMMR3FreePagesPerform(PVM pVM, PGMMFREEPAGESREQ pReq) { int rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_FREE_PAGES, 0, &pReq->Hdr); if (RT_SUCCESS(rc)) return rc; AssertRC(rc); return VMSetError(pVM, rc, RT_SRC_POS, N_("GMMR0FreePages failed to free %u pages"), pReq->cPages); } /** * Cleans up a GMMR0FreePages request. * @param pReq Pointer to the request (returned by GMMR3FreePagesPrepare). */ GMMR3DECL(void) GMMR3FreePagesCleanup(PGMMFREEPAGESREQ pReq) { RTMemTmpFree(pReq); } /** * Frees allocated pages, for bailing out on failure. * * This will not call VMSetError on failure but will use AssertLogRel instead. * * @param pVM Pointer to the shared VM structure. * @param pAllocReq The allocation request to undo. */ GMMR3DECL(void) GMMR3FreeAllocatedPages(PVM pVM, GMMALLOCATEPAGESREQ const *pAllocReq) { uint32_t cb = RT_OFFSETOF(GMMFREEPAGESREQ, aPages[pAllocReq->cPages]); PGMMFREEPAGESREQ pReq = (PGMMFREEPAGESREQ)RTMemTmpAllocZ(cb); AssertLogRelReturnVoid(pReq); pReq->Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; pReq->Hdr.cbReq = cb; pReq->enmAccount = pAllocReq->enmAccount; pReq->cPages = pAllocReq->cPages; uint32_t iPage = pAllocReq->cPages; while (iPage-- > 0) { Assert(pAllocReq->aPages[iPage].idPage != NIL_GMM_PAGEID); pReq->aPages[iPage].idPage = pAllocReq->aPages[iPage].idPage; } int rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_FREE_PAGES, 0, &pReq->Hdr); AssertLogRelRC(rc); RTMemTmpFree(pReq); } #if 0 /* impractical */ GMMR3DECL(int) GMMR3BalloonedPages(PVM pVM, uint32_t cBalloonedPages, uint32_t cPagesToFree, PGMMFREEPAGEDESC paPages, bool fCompleted) { GMMBALLOONEDPAGESREQ Req; Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; Req.Hdr.cbReq = sizeof(Req); return SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_BALLOONED_PAGES, 0, &Req.Hdr); } #endif /** * @see GMMR0DeflatedBalloon */ GMMR3DECL(int) GMMR3DeflatedBalloon(PVM pVM, uint32_t cPages) { return SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_DEFLATED_BALLOON, cPages, NULL); } /** * @see GMMR0MapUnmapChunk */ GMMR3DECL(int) GMMR3MapUnmapChunk(PVM pVM, uint32_t idChunkMap, uint32_t idChunkUnmap, PRTR3PTR ppvR3) { GMMMAPUNMAPCHUNKREQ Req; Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; Req.Hdr.cbReq = sizeof(Req); Req.idChunkMap = idChunkMap; Req.idChunkUnmap = idChunkUnmap; Req.pvR3 = NULL; int rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_MAP_UNMAP_CHUNK, 0, &Req.Hdr); if (RT_SUCCESS(rc) && ppvR3) *ppvR3 = Req.pvR3; return rc; } /** * @see GMMR0SeedChunk */ GMMR3DECL(int) GMMR3SeedChunk(PVM pVM, RTR3PTR pvR3) { return SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_GMM_SEED_CHUNK, (uintptr_t)pvR3, NULL); }