PGMAllPhys.cpp revision 0975ae0a0fb615c945150c48e4a73187c1f4f84d
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync * PGM - Page Manager and Monitor, Physical Memory Addressing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * available from http://www.virtualbox.org. This file is free software;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * you can redistribute it and/or modify it under the terms of the GNU
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * General Public License (GPL) as published by the Free Software
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * additional information or have any questions.
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync/*******************************************************************************
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync* Defined Constants And Macros *
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync*******************************************************************************/
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync/** @def PGM_IGNORE_RAM_FLAGS_RESERVED
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Don't respect the MM_RAM_FLAGS_RESERVED flag when converting to HC addresses.
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync * Since this flag is currently incorrectly kept set for ROM regions we will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * have to ignore it for now so we don't break stuff.
b450d7a1747c5f4fb7c917a8ec1f9ce8440d7ffevboxsync * @todo this has been fixed now I believe, remove this hack.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/*******************************************************************************
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync* Header Files *
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync*******************************************************************************/
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * \#PF Handler callback for Guest ROM range write access.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * We simply ignore the writes or fall back to the recompiler if we don't support the instruction.
6a795f9e75e30c7f1d75cd45e5de233c71662f58vboxsync * @returns VBox status code (appropritate for trap handling and GC return).
6a795f9e75e30c7f1d75cd45e5de233c71662f58vboxsync * @param pVM VM Handle.
6a795f9e75e30c7f1d75cd45e5de233c71662f58vboxsync * @param uErrorCode CPU Error code.
6a795f9e75e30c7f1d75cd45e5de233c71662f58vboxsync * @param pRegFrame Trap register frame.
6a795f9e75e30c7f1d75cd45e5de233c71662f58vboxsync * @param pvFault The fault address (cr2).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvUser User argument. Pointer to the ROM range structure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) pgmPhysRomWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, void *pvFault, RTGCPHYS GCPhysFault, void *pvUser)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * If it's a simple instruction which doesn't change the cpu state
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * we will simply skip it. Otherwise we'll have to defer it to REM.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = EMInterpretDisasOne(pVM, pRegFrame, &Cpu, &cbOp);
75ef08b33f9c67a8dd50748ece1117aed8098d51vboxsync && Cpu.mode == CPUMODE_32BIT /** @todo why does this matter? */
75ef08b33f9c67a8dd50748ece1117aed8098d51vboxsync && !(Cpu.prefix & (PREFIX_REPNE | PREFIX_REP | PREFIX_SEG)))
75ef08b33f9c67a8dd50748ece1117aed8098d51vboxsync /** @todo Find other instructions we can safely skip, possibly
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * adding this kind of detection to DIS or EM. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatRZGuestROMWriteHandled);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMHandlerPhysicalPageTempOff(pVM, pRom->GCPhys, GCPhysFault & X86_PTE_PG_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Handle it in ring-3 because it's *way* easier there. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailedReturn(("enmProt=%d iPage=%d GCPhysFault=%RGp\n",
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatRZGuestROMWriteUnhandled);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Checks if Address Gate 20 is enabled or not.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns true if enabled.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns false if disabled.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysIsA20Enabled %d\n", pVM->pgm.s.fA20Enabled));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync return !!pVM->pgm.s.fA20Enabled ; /* stupid MS compiler doesn't trust me. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Validates a GC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns true if valid.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns false if invalid.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The physical address to validate.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(bool) PGMPhysIsGCPhysValid(PVM pVM, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Checks if a GC physical address is a normal page,
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * i.e. not ROM, MMIO or reserved.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns true if normal.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns false if invalid, ROM, MMIO or reserved page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The physical address to check.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(bool) PGMPhysIsGCPhysNormal(PVM pVM, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMPAGE pPage = pgmPhysGetPage(&pVM->pgm.s, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync && !(pPage->HCPhys & (MM_RAM_FLAGS_MMIO | MM_RAM_FLAGS_ROM | MM_RAM_FLAGS_RESERVED | MM_RAM_FLAGS_MMIO2));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a GC physical address to a HC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VERR_PGM_PHYS_PAGE_RESERVED it it's a valid GC physical
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * GC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The GC physical address to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pHCPhys Where to store the HC physical address on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPhys2HCPhys(PVM pVM, RTGCPHYS GCPhys, PRTHCPHYS pHCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = pgmPhysGetPageEx(&pVM->pgm.s, GCPhys, &pPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (RT_UNLIKELY(pPage->HCPhys & MM_RAM_FLAGS_RESERVED)) /** @todo PAGE FLAGS */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *pHCPhys = PGM_PAGE_GET_HCPHYS(pPage) | (GCPhys & PAGE_OFFSET_MASK);
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * Invalidates the GC page mapping TLB.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * @param pVM The VM handle.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsyncVMMDECL(void) PGMPhysInvalidatePageGCMapTLB(PVM pVM)
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync /* later */
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsync * Invalidates the ring-0 page mapping TLB.
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsync * @param pVM The VM handle.
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsyncVMMDECL(void) PGMPhysInvalidatePageR0MapTLB(PVM pVM)
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsync * Invalidates the ring-3 page mapping TLB.
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsync * @param pVM The VM handle.
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsyncVMMDECL(void) PGMPhysInvalidatePageR3MapTLB(PVM pVM)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.PhysTlbHC.aEntries); i++)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pVM->pgm.s.PhysTlbHC.aEntries[i].GCPhys = NIL_RTGCPHYS;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Frees the specified RAM page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This is used by ballooning and remapping MMIO2.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM Pointer to the shared VM structure.
824104c3b60b9c8d5c03c40658e33ecd6c4fa9e8vboxsync * @param pPage Pointer to the page structure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address of the page, if applicable.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncvoid pgmPhysFreePage(PVM pVM, PPGMPAGE pPage, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertFatal(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo implement this... */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Makes sure that there is at least one handy page ready for use.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * This will also take the appropriate actions when reaching water-marks.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * @returns The following VBox status codes.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * @retval VINF_SUCCESS on success.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * @retval VERR_EM_NO_MEMORY if we're really out of memory.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remarks Must be called from within the PGM critical section. It may
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * nip back to ring-3/0 in some cases.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync /** @remarks
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * low-water mark logic for R0 & GC:
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * - 75%: Set FF.
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync * - 50%: Force return to ring-3 ASAP.
b28326220af580dde4a61f15930f51fe584dc896vboxsync * For ring-3 there is a little problem wrt to the recompiler, so:
b28326220af580dde4a61f15930f51fe584dc896vboxsync * - 75%: Set FF.
b28326220af580dde4a61f15930f51fe584dc896vboxsync * - 50%: Try allocate pages; on failure we'll force REM to quite ASAP.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * The basic idea is that we should be able to get out of any situation with
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * only 50% of handy pages remaining.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * At the moment we'll not adjust the number of handy pages relative to the
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * actual VM RAM committment, that's too much work for now.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(pVM->pgm.s.cHandyPages <= RT_ELEMENTS(pVM->pgm.s.aHandyPages));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync || pVM->pgm.s.cHandyPages - 1 <= RT_ELEMENTS(pVM->pgm.s.aHandyPages) / 2 /* 50% */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log(("PGM: cHandyPages=%u out of %u -> allocate more\n", pVM->pgm.s.cHandyPages - 1 <= RT_ELEMENTS(pVM->pgm.s.aHandyPages)));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = SUPCallVMMR0Ex(pVM->pVMR0, VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES, 0, NULL);
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync /** @todo call PGMR0PhysAllocateHandyPages directly - need to make sure we can call kernel code first and deal with the seeding fallback. */
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync int rc = VMMR0CallHost(pVM, VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES, 0);
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync int rc = VMMGCCallHost(pVM, VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES, 0);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(VM_FF_ISSET(pVM, VM_FF_PGM_NEED_HANDY_PAGES));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(pVM->pgm.s.cHandyPages <= RT_ELEMENTS(pVM->pgm.s.aHandyPages));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync else if (pVM->pgm.s.cHandyPages - 1 <= (RT_ELEMENTS(pVM->pgm.s.aHandyPages) / 4) * 3) /* 75% */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (pVM->pgm.s.cHandyPages - 1 <= RT_ELEMENTS(pVM->pgm.s.aHandyPages) / 2)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log(("PGM: VM_FF_TO_R3 - cHandyPages=%u out of %u\n", pVM->pgm.s.cHandyPages - 1 <= RT_ELEMENTS(pVM->pgm.s.aHandyPages)));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Replace a zero or shared page with new page that we can write to.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns The following VBox status codes.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success, pPage is modified.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_EM_NO_MEMORY if we're totally out of memory.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @todo Propagate VERR_EM_NO_MEMORY up the call tree.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pPage The physical page tracking structure. This will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * be modified on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The address of the page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remarks Must be called from within the PGM critical section. It may
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * nip back to ring-3/0 in some cases.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remarks This function shouldn't really fail, however if it does
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * it probably means we've screwed up the size of the amount
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * and/or the low-water mark of handy pages. Or, that some
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * device I/O is causing a lot of pages to be allocated while
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * while the host is in a low-memory condition.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncint pgmPhysAllocPage(PVM pVM, PPGMPAGE pPage, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Ensure that we've got a page handy, take it and use it.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsg(PGM_PAGE_IS_ZERO(pPage) || PGM_PAGE_IS_SHARED(pPage), ("%d %RGp\n", PGM_PAGE_GET_STATE(pPage), GCPhys));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(iHandyPage < RT_ELEMENTS(pVM->pgm.s.aHandyPages));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(pVM->pgm.s.aHandyPages[iHandyPage].HCPhysGCPhys != NIL_RTHCPHYS);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(!(pVM->pgm.s.aHandyPages[iHandyPage].HCPhysGCPhys & ~X86_PTE_PAE_PG_MASK));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(pVM->pgm.s.aHandyPages[iHandyPage].idPage != NIL_GMM_PAGEID);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(pVM->pgm.s.aHandyPages[iHandyPage].idSharedPage == NIL_GMM_PAGEID);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * There are one or two action to be taken the next time we allocate handy pages:
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * - Tell the GMM (global memory manager) what the page is being used for.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * (Speeds up replacement operations - sharing and defragmenting.)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * - If the current backing is shared, it must be freed.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync const RTHCPHYS HCPhys = pVM->pgm.s.aHandyPages[iHandyPage].HCPhysGCPhys;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pVM->pgm.s.aHandyPages[iHandyPage].HCPhysGCPhys = GCPhys;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pVM->pgm.s.aHandyPages[iHandyPage].idSharedPage = PGM_PAGE_GET_PAGEID(pPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(PGM_PAGE_GET_PAGEID(pPage) != NIL_GMM_PAGEID);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log2(("PGM: Replaced shared page %#x at %RGp with %#x / %RHp\n", PGM_PAGE_GET_PAGEID(pPage),
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPhys, pVM->pgm.s.aHandyPages[iHandyPage].idPage, HCPhys));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_MID_Z(Stat,PageReplaceShared));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/** @todo err.. what about copying the page content? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log2(("PGM: Replaced zero page %RGp with %#x / %RHp\n", GCPhys, pVM->pgm.s.aHandyPages[iHandyPage].idPage, HCPhys));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatRZPageReplaceZero);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/** @todo verify that the handy page is zero! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Do the PGMPAGE modifications.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGM_PAGE_SET_PAGEID(pPage, pVM->pgm.s.aHandyPages[iHandyPage].idPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGM_PAGE_SET_STATE(pPage, PGM_PAGE_STATE_ALLOCATED);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Deal with pages that are not writable, i.e. not in the ALLOCATED state.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pPage The physical page tracking structure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The address of the page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remarks Called from within the PGM critical section.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncint pgmPhysPageMakeWritable(PVM pVM, PPGMPAGE pPage, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGM_PAGE_SET_STATE(pPage, PGM_PAGE_STATE_ALLOCATED);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* fall thru */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync default: /* to shut up GCC */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Zero pages can be dummy pages for MMIO or reserved memory,
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * so we need to check the flags before joining cause with
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * shared page replacement.
7a6ba152515c963d275e7c1371ba39155ec6cf58vboxsync /* fall thru */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Maps a page into the current virtual address space so it can be accessed.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pPage The physical page tracking structure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The address of the page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppMap Where to store the address of the mapping tracking structure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppv Where to store the mapping address of the page. The page
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * offset is masked off!
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remarks Called from within the PGM critical section.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncint pgmPhysPageMap(PVM pVM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPPGMPAGEMAP ppMap, void **ppv)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Just some sketchy GC/R0-darwin code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pgmR0DynMapHCPageInlined(&pVM->pgm.s, HCPhys, ppv);
75ef08b33f9c67a8dd50748ece1117aed8098d51vboxsync#else /* IN_RING3 || IN_RING0 */
8f8c8ff0bfe182cff047f8c028b2546b25087d44vboxsync * Find/make Chunk TLB entry for the mapping chunk.
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync const uint32_t idChunk = PGM_PAGE_GET_CHUNKID(pPage);
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync PPGMCHUNKR3MAPTLBE pTlbe = &pVM->pgm.s.ChunkR3Map.Tlb.aEntries[PGM_CHUNKR3MAPTLB_IDX(idChunk)];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_MID_Z(Stat,ChunkR3MapTlbHits));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_MID_Z(Stat,ChunkR3MapTlbMisses));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Find the chunk, map it if necessary.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pMap = (PPGMCHUNKR3MAP)RTAvlU32Get(&pVM->pgm.s.ChunkR3Map.pTree, idChunk);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = VMMR0CallHost(pVM, VMMCALLHOST_PGM_MAP_CHUNK, idChunk);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pMap = (PPGMCHUNKR3MAP)RTAvlU32Get(&pVM->pgm.s.ChunkR3Map.pTree, idChunk);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Enter it into the Chunk TLB.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *ppv = (uint8_t *)pMap->pv + (PGM_PAGE_GET_PAGE_IN_CHUNK(pPage) << PAGE_SHIFT);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if !defined(IN_RC) && !defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Load a guest page into the ring-3 physical TLB.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pPGM The PGM instance pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address in question.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncint pgmPhysPageLoadIntoTlb(PPGM pPGM, RTGCPHYS GCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync STAM_COUNTER_INC(&pPGM->CTX_MID_Z(Stat,PageMapTlbMisses));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Find the ram range.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * 99.8% of requests are expected to be in the first range.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Map the page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Make a special case for the zero page as it is kind of special.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMPAGEMAPTLBE pTlbe = &pPGM->CTXSUFF(PhysTlb).aEntries[PGM_PAGEMAPTLB_IDX(GCPhys)];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = pgmPhysPageMap(PGM2VM(pPGM), pPage, GCPhys, &pMap, &pv);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Assert(PGM_PAGE_GET_HCPHYS(pPage) == pPGM->HCPhysZeroPg);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* !IN_RC && !VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Requests the mapping of a guest page into the current context.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API should only be used for very short term, as it will consume
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * scarse resources (R0 and GC) in the mapping cache. When you're done
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * with the page, call PGMPhysReleasePageMappingLock() ASAP to release it.
9083f76e8c5709604766d0215a380de516e781eevboxsync * This API will assume your intention is to write to the page, and will
ad8fb8c920c36650d5ead020ef8e05b681dd4375vboxsync * therefore replace shared and zero pages. If you do not intend to modify
ad8fb8c920c36650d5ead020ef8e05b681dd4375vboxsync * the page, use the PGMPhysGCPhys2CCPtrReadOnly() API.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address of the page that should be mapped.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppv Where to store the address corresponding to GCPhys.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pLock Where to store the lock information that PGMPhysReleasePageMappingLock needs.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark Avoid calling this API from within critical sections (other than
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * the PGM one) because of the deadlock risk.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @thread Any thread.
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsyncVMMDECL(int) PGMPhysGCPhys2CCPtr(PVM pVM, RTGCPHYS GCPhys, void **ppv, PPGMPAGEMAPLOCK pLock)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync# if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync/** @todo this needs to be fixed, it really ain't right. */
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync /* Until a physical TLB is implemented for GC or/and R0-darwin, let PGMDynMapGCPageEx handle it. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Query the Physical TLB entry for the page (may fail).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = pgmPhysPageQueryTlbe(&pVM->pgm.s, GCPhys, &pTlbe);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * If the page is shared, the zero page, or being write monitored
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * it must be converted to an page that's writable if possible.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (RT_UNLIKELY(PGM_PAGE_GET_STATE(pPage) != PGM_PAGE_STATE_ALLOCATED))
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo stuff is missing here! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Now, just perform the locking and calculate the return address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (RT_LIKELY(pPage->cLocks != PGM_PAGE_MAX_LOCKS))
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (RT_UNLIKELY(++pPage->cLocks == PGM_PAGE_MAX_LOCKS))
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailed(("%RGp is entering permanent locked state!\n", GCPhys));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pMap->cRefs++; /* Extra ref to prevent it from going away. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *ppv = (void *)((uintptr_t)pTlbe->pv | (GCPhys & PAGE_OFFSET_MASK));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 || IN_RING0 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Temporary fallback code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync# if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/** @todo @bugref{3202}: check up this path. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync return PGMPhysGCPhys2R3Ptr(pVM, GCPhys, 1, (PRTR3PTR)ppv);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Requests the mapping of a guest page into the current context.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API should only be used for very short term, as it will consume
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * scarse resources (R0 and GC) in the mapping cache. When you're done
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * with the page, call PGMPhysReleasePageMappingLock() ASAP to release it.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address of the page that should be mapped.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppv Where to store the address corresponding to GCPhys.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pLock Where to store the lock information that PGMPhysReleasePageMappingLock needs.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark Avoid calling this API from within critical sections (other than
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * the PGM one) because of the deadlock risk.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @thread Any thread.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPhys2CCPtrReadOnly(PVM pVM, RTGCPHYS GCPhys, void const **ppv, PPGMPAGEMAPLOCK pLock)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo implement this */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync return PGMPhysGCPhys2CCPtr(pVM, GCPhys, (void **)ppv, pLock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Requests the mapping of a guest page given by virtual address into the current context.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API should only be used for very short term, as it will consume
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * scarse resources (R0 and GC) in the mapping cache. When you're done
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * with the page, call PGMPhysReleasePageMappingLock() ASAP to release it.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API will assume your intention is to write to the page, and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * therefore replace shared and zero pages. If you do not intend to modify
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * the page, use the PGMPhysGCPtr2CCPtrReadOnly() API.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PAGE_TABLE_NOT_PRESENT if the page directory for the virtual address isn't present.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PAGE_NOT_PRESENT if the page at the virtual address isn't present.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address of the page that should be mapped.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppv Where to store the address corresponding to GCPhys.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pLock Where to store the lock information that PGMPhysReleasePageMappingLock needs.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark Avoid calling this API from within critical sections (other than
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * the PGM one) because of the deadlock risk.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @thread EMT
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2CCPtr(PVM pVM, RTGCPTR GCPtr, void **ppv, PPGMPAGEMAPLOCK pLock)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Requests the mapping of a guest page given by virtual address into the current context.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API should only be used for very short term, as it will consume
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * scarse resources (R0 and GC) in the mapping cache. When you're done
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * with the page, call PGMPhysReleasePageMappingLock() ASAP to release it.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PAGE_TABLE_NOT_PRESENT if the page directory for the virtual address isn't present.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PAGE_NOT_PRESENT if the page at the virtual address isn't present.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_PHYS_PAGE_RESERVED it it's a valid page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The guest physical address of the page that should be mapped.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param ppv Where to store the address corresponding to GCPhys.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pLock Where to store the lock information that PGMPhysReleasePageMappingLock needs.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark Avoid calling this API from within critical sections (other than
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * the PGM one) because of the deadlock risk.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @thread EMT
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2CCPtrReadOnly(PVM pVM, RTGCPTR GCPtr, void const **ppv, PPGMPAGEMAPLOCK pLock)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhys, ppv, pLock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Release the mapping of a guest page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This is the counter part of PGMPhysGCPhys2CCPtr, PGMPhysGCPhys2CCPtrReadOnly
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * PGMPhysGCPtr2CCPtr and PGMPhysGCPtr2CCPtrReadOnly.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pLock The lock structure initialized by the mapping function.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(void) PGMPhysReleasePageMappingLock(PVM pVM, PPGMPAGEMAPLOCK pLock)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* currently nothing to do here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/* --- postponed
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#elif defined(IN_RING0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#else /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMCHUNKR3MAP pChunk = (PPGMCHUNKR3MAP)pLock->pvChunk;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a GC physical address to a HC ring-3 pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VINF_SUCCESS on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VERR_PGM_PHYS_PAGE_RESERVED it it's a valid GC physical
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * page but has no physical backing.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * GC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VERR_PGM_GCPHYS_RANGE_CROSSES_BOUNDARY if the range crosses
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * a dynamic ram chunk boundary
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The GC physical address to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cbRange Physical range
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pR3Ptr Where to store the R3 pointer on success.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPhys2R3Ptr(PVM pVM, RTGCPHYS GCPhys, RTUINT cbRange, PRTR3PTR pR3Ptr)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync VM_ASSERT_EMT(pVM); /* no longer safe for use outside the EMT thread! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if ((GCPhys & PGM_DYNAMIC_CHUNK_BASE_MASK) != ((GCPhys+cbRange-1) & PGM_DYNAMIC_CHUNK_BASE_MASK))
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailed(("%RGp - %RGp crosses a chunk boundary!!\n", GCPhys, GCPhys+cbRange));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogRel(("PGMPhysGCPhys2HCPtr %RGp - %RGp crosses a chunk boundary!!\n", GCPhys, GCPhys+cbRange));
4946f90c5c7016131555f0c925091d4ede6bdde0vboxsync int rc = pgmPhysGetPageAndRangeEx(&pVM->pgm.s, GCPhys, &pPage, &pRam);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailed(("%RGp - %RGp crosses a chunk boundary!!\n", GCPhys, GCPhys + cbRange));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync unsigned iChunk = (off >> PGM_DYNAMIC_CHUNK_SHIFT);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) /* ASSUMES this is a rare occurence */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PRTR3UINTPTR paChunkR3Ptrs = (PRTR3UINTPTR)MMHyperR3ToCC(pVM, pRam->paChunkR3Ptrs);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *pR3Ptr = (RTR3PTR)(paChunkR3Ptrs[iChunk] + (off & PGM_DYNAMIC_CHUNK_OFFSET_MASK));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *pR3Ptr = (RTR3PTR)(pRam->paChunkR3Ptrs[iChunk] + (off & PGM_DYNAMIC_CHUNK_OFFSET_MASK));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync *pR3Ptr = (RTR3PTR)((RTR3UINTPTR)pRam->pvR3 + off);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * PGMPhysGCPhys2R3Ptr convenience for use with assertions.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns The R3Ptr, NIL_RTR3PTR on failure.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys The GC Physical addresss.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cbRange Physical range.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(RTR3PTR) PGMPhysGCPhys2R3PtrAssert(PVM pVM, RTGCPHYS GCPhys, RTUINT cbRange)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMPhysGCPhys2R3Ptr(pVM, GCPhys, cbRange, &R3Ptr);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a guest pointer to a GC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This uses the current CR3/CR0/CR4 of the guest.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM Handle
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtr The guest pointer to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pGCPhys Where to store the GC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2GCPhys(PVM pVM, RTGCPTR GCPtr, PRTGCPHYS pGCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGM_GST_PFN(GetPage,pVM)(pVM, (RTGCUINTPTR)GCPtr, NULL, pGCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a guest pointer to a HC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This uses the current CR3/CR0/CR4 of the guest.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM Handle
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtr The guest pointer to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pHCPhys Where to store the HC physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2HCPhys(PVM pVM, RTGCPTR GCPtr, PRTHCPHYS pHCPhys)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGM_GST_PFN(GetPage,pVM)(pVM, (RTGCUINTPTR)GCPtr, NULL, &GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2HCPhys(pVM, GCPhys | ((RTGCUINTPTR)GCPtr & PAGE_OFFSET_MASK), pHCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a guest pointer to a R3 pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This uses the current CR3/CR0/CR4 of the guest.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM Handle
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtr The guest pointer to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pR3Ptr Where to store the R3 virtual address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2R3Ptr(PVM pVM, RTGCPTR GCPtr, PRTR3PTR pR3Ptr)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync VM_ASSERT_EMT(pVM); /* no longer safe for use outside the EMT thread! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGM_GST_PFN(GetPage,pVM)(pVM, (RTGCUINTPTR)GCPtr, NULL, &GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2R3Ptr(pVM, GCPhys | ((RTGCUINTPTR)GCPtr & PAGE_OFFSET_MASK), 1 /* we always stay within one page */, pR3Ptr);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Converts a guest virtual address to a HC ring-3 pointer by specfied CR3 and
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM Handle
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtr The guest pointer to convert.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cr3 The guest CR3.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param fFlags Flags used for interpreting the PD correctly: X86_CR4_PSE and X86_CR4_PAE
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pR3Ptr Where to store the R3 pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark This function is used by the REM at a time where PGM could
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * potentially not be in sync. It could also be used by a
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * future DBGF API to cpu state independent conversions.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysGCPtr2R3PtrByGstCR3(PVM pVM, RTGCPTR GCPtr, uint64_t cr3, unsigned fFlags, PRTR3PTR pR3Ptr)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync VM_ASSERT_EMT(pVM); /* no longer safe for use outside the EMT thread! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * PAE or 32-bit?
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GCPHYS_2_PTR(pVM, cr3 & X86_CR3_PAGE_MASK, &pPD);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync X86PDE Pde = pPD->a[(RTGCUINTPTR)GCPtr >> X86_PD_SHIFT];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync { /* (big page) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2R3Ptr(pVM, pgmGstGet4MBPhysPage(&pVM->pgm.s, Pde) | ((RTGCUINTPTR)GCPtr & X86_PAGE_4M_OFFSET_MASK),
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync { /* (normal page) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GCPHYS_2_PTR(pVM, Pde.u & X86_PDE_PG_MASK, &pPT);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync X86PTE Pte = pPT->a[((RTGCUINTPTR)GCPtr >> X86_PT_SHIFT) & X86_PT_MASK];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync return PGMPhysGCPhys2R3Ptr(pVM, (Pte.u & X86_PTE_PG_MASK) | ((RTGCUINTPTR)GCPtr & PAGE_OFFSET_MASK),
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo long mode! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GCPHYS_2_PTR(pVM, cr3 & X86_CR3_PAE_PAGE_MASK, &pPdpt);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync X86PDPE Pdpe = pPdpt->a[((RTGCUINTPTR)GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GCPHYS_2_PTR(pVM, Pdpe.u & X86_PDPE_PG_MASK, &pPD);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync X86PDEPAE Pde = pPD->a[((RTGCUINTPTR)GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync { /* (big page) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2R3Ptr(pVM, (Pde.u & X86_PDE2M_PAE_PG_MASK) | ((RTGCUINTPTR)GCPtr & X86_PAGE_2M_OFFSET_MASK),
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync { /* (normal page) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GCPHYS_2_PTR(pVM, (Pde.u & X86_PDE_PAE_PG_MASK), &pPT);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync X86PTEPAE Pte = pPT->a[((RTGCUINTPTR)GCPtr >> X86_PT_PAE_SHIFT) & X86_PT_PAE_MASK];
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync return PGMPhysGCPhys2R3Ptr(pVM, (Pte.u & X86_PTE_PAE_PG_MASK) | ((RTGCUINTPTR)GCPtr & PAGE_OFFSET_MASK),
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Cache PGMPhys memory access
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync * @param pVM VM Handle.
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync * @param pCache Cache structure pointer
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys GC physical address
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pbHC HC pointer corresponding to physical page
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @thread EMT.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncstatic void pgmPhysCacheAdd(PVM pVM, PGMPHYSCACHE *pCache, RTGCPHYS GCPhys, uint8_t *pbR3)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync iCacheIndex = ((GCPhys >> PAGE_SHIFT) & PGM_MAX_PHYSCACHE_ENTRIES_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Read physical memory.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API respects access handlers and MMIO. Use PGMPhysSimpleReadGCPhys() if you
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * want to ignore those.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM Handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys Physical address start reading from.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvBuf Where to put the read bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cbRead How many bytes to read.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(void) PGMPhysRead(PVM pVM, RTGCPHYS GCPhys, void *pvBuf, size_t cbRead)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync bool fGrabbedLock = false;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsg(cbRead > 0, ("don't even think about reading zero bytes!\n"));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysRead: %RGp %d\n", GCPhys, cbRead));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Copy loop on ram ranges.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Find range. */
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync /* Inside range or not? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Must work our way thru this page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Physical chunk in dynamically allocated range not present? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Treat it as reserved; return zeros */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* temp hacks, will be reorganized. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Physical handler.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync else if ( RT_UNLIKELY(PGM_PAGE_GET_HNDL_PHYS_STATE(pPage) >= PGM_PAGE_HNDL_PHYS_STATE_ALL)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync && !(pPage->HCPhys & MM_RAM_FLAGS_MMIO)) /// @todo PAGE FLAGS
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#ifdef IN_RING3 /** @todo deal with this in GC and R0! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* find and call the handler */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMPHYSHANDLER pNode = (PPGMPHYSHANDLER)RTAvlroGCPhysRangeGet(&pVM->pgm.s.pTreesR3->PhysHandlers, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Note! Dangerous assumption that HC handlers don't do anything that really requires an EMT lock! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = pNode->pfnHandlerR3(pVM, GCPhys, pvSrc, pvBuf, cb, PGMACCESSTYPE_READ, pNode->pvUserR3);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvSrc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Virtual handlers.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync else if ( RT_UNLIKELY(PGM_PAGE_GET_HNDL_VIRT_STATE(pPage) >= PGM_PAGE_HNDL_VIRT_STATE_ALL)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync && !(pPage->HCPhys & MM_RAM_FLAGS_MMIO)) /// @todo PAGE FLAGS
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#ifdef IN_RING3 /** @todo deal with this in GC and R0! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Search the whole tree for matching physical addresses (rather expensive!) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc2 = pgmHandlerVirtualFindByPhysAddr(pVM, GCPhys, &pNode, &iPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync RTGCUINTPTR GCPtr = ((RTGCUINTPTR)pNode->Core.Key & PAGE_BASE_GC_MASK)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync + (iPage << PAGE_SHIFT) + (off & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Note! Dangerous assumption that HC handlers don't do anything that really requires an EMT lock! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = pNode->pfnHandlerR3(pVM, (RTGCPTR)GCPtr, pvSrc, pvBuf, cb, PGMACCESSTYPE_READ, 0);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvSrc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync switch (pPage->HCPhys & (MM_RAM_FLAGS_RESERVED | MM_RAM_FLAGS_MMIO | MM_RAM_FLAGS_ROM)) /** @todo PAGE FLAGS */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Normal memory or ROM.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync //case MM_RAM_FLAGS_ROM | MM_RAM_FLAGS_MMIO2: /* = shadow */ - //MMIO2 isn't in the mask.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync case MM_RAM_FLAGS_MMIO2: // MMIO2 isn't in the mask.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvSrc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RING3) && defined(PGM_PHYSMEMACCESS_CACHING)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pgmPhysCacheAdd(pVM, &pVM->pgm.s.pgmphysreadcache, GCPhys, (uint8_t*)pvSrc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 && PGM_PHYSMEMACCESS_CACHING */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * All reserved, nothing there.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * The rest needs to be taken more carefully.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if 1 /** @todo r=bird: Can you do this properly please. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo Try MMIO; quick hack */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (cbRead <= 8 && IOMMMIORead(pVM, GCPhys, (uint32_t *)pvBuf, cbRead) == VINF_SUCCESS)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo fix me later. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertReleaseMsgFailed(("Unknown read at %RGp size %u implement the complex physical reading case %RHp\n",
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pPage->HCPhys & (MM_RAM_FLAGS_RESERVED | MM_RAM_FLAGS_MMIO | MM_RAM_FLAGS_ROM))); /** @todo PAGE FLAGS */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysRead: Unassigned %RGp size=%u\n", GCPhys, cbRead));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Unassigned address space.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write to physical memory.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This API respects access handlers and MMIO. Use PGMPhysSimpleReadGCPhys() if you
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * want to ignore those.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM Handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhys Physical address to write to.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvBuf What to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cbWrite How many bytes to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(void) PGMPhysWrite(PVM pVM, RTGCPHYS GCPhys, const void *pvBuf, size_t cbWrite)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync bool fGrabbedLock = false;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsg(!pVM->pgm.s.fNoMorePhysWrites, ("Calling PGMPhysWrite after pgmR3Save()!\n"));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsg(cbWrite > 0, ("don't even think about writing zero bytes!\n"));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysWrite: %RGp %d\n", GCPhys, cbWrite));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Copy loop on ram ranges.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Find range. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Inside range or not? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Must work our way thru this page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Physical chunk in dynamically allocated range not present? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMPhysWrite(pVM, GCPhys, pvBuf, cbWrite); /* try again; can't assume pRam is still valid (paranoia) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = CTXALLMID(VMM, CallHost)(pVM, VMMCALLHOST_PGM_RAM_GROW_RANGE, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* temporary hack, will reogranize is later. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Virtual handlers
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync && !(pPage->HCPhys & MM_RAM_FLAGS_MMIO)) /// @todo PAGE FLAGS
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Physical write handler + virtual write handler.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Consider this a quick workaround for the CSAM + shadow caching problem.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * We hand it to the shadow caching first since it requires the unchanged
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * data. CSAM will have to put up with it already being changed.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#ifdef IN_RING3 /** @todo deal with this in GC and R0! */
9b9a21c4dedad15ac8b2059a858a94c5a33db1bdvboxsync /* 1. The physical handler */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PPGMPHYSHANDLER pPhysNode = (PPGMPHYSHANDLER)RTAvlroGCPhysRangeGet(&pVM->pgm.s.pTreesR3->PhysHandlers, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbRange = pPhysNode->Core.KeyLast - GCPhys + 1;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Note! Dangerous assumption that R3 handlers don't do anything that really requires an EMT lock! */
9b9a21c4dedad15ac8b2059a858a94c5a33db1bdvboxsync rc = pPhysNode->pfnHandlerR3(pVM, GCPhys, pvDst, (void *)pvBuf, cb, PGMACCESSTYPE_WRITE, pPhysNode->pvUserR3);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* 2. The virtual handler (will see incorrect data) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc2 = pgmHandlerVirtualFindByPhysAddr(pVM, GCPhys, &pVirtNode, &iPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbRange = pVirtNode->Core.KeyLast - GCPhys + 1;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync RTGCUINTPTR GCPtr = ((RTGCUINTPTR)pVirtNode->Core.Key & PAGE_BASE_GC_MASK)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync + (iPage << PAGE_SHIFT) + (off & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Note! Dangerous assumption that R3 handlers don't do anything that really requires an EMT lock! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc2 = pVirtNode->pfnHandlerR3(pVM, (RTGCPTR)GCPtr, pvDst, (void *)pvBuf, cb, PGMACCESSTYPE_WRITE, 0);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvDst);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/** @todo deal with this in GC and R0! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Search the whole tree for matching physical addresses (rather expensive!) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc2 = pgmHandlerVirtualFindByPhysAddr(pVM, GCPhys, &pNode, &iPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync RTGCUINTPTR GCPtr = ((RTGCUINTPTR)pNode->Core.Key & PAGE_BASE_GC_MASK)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync + (iPage << PAGE_SHIFT) + (off & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Note! Dangerous assumption that R3 handlers don't do anything that really requires an EMT lock! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = pNode->pfnHandlerR3(pVM, (RTGCPTR)GCPtr, pvDst, (void *)pvBuf, cb, PGMACCESSTYPE_WRITE, 0);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvDst);
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync * Physical handler.
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync else if ( RT_UNLIKELY(PGM_PAGE_GET_HNDL_PHYS_STATE(pPage) >= PGM_PAGE_HNDL_PHYS_STATE_WRITE)
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync && !(pPage->HCPhys & MM_RAM_FLAGS_MMIO)) /// @todo PAGE FLAGS
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync#ifdef IN_RING3 /** @todo deal with this in GC and R0! */
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync /* find and call the handler */
23631945c9cb3df68ca51c69ed0b77e90164b402vboxsync PPGMPHYSHANDLER pNode = (PPGMPHYSHANDLER)RTAvlroGCPhysRangeGet(&pVM->pgm.s.pTreesR3->PhysHandlers, GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo Dangerous assumption that HC handlers don't do anything that really requires an EMT lock! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = pNode->pfnHandlerR3(pVM, GCPhys, pvDst, (void *)pvBuf, cb, PGMACCESSTYPE_WRITE, pNode->pvUserR3);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvDst);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo r=bird: missing MM_RAM_FLAGS_ROM here, we shall not allow anyone to overwrite the ROM! */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync switch (pPage->HCPhys & (MM_RAM_FLAGS_RESERVED | MM_RAM_FLAGS_MMIO | MM_RAM_FLAGS_MMIO2)) /** @todo PAGE FLAGS */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Normal memory, MMIO2 or writable shadow ROM.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync case MM_RAM_FLAGS_ROM | MM_RAM_FLAGS_MMIO2: /* shadow rom */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync PGMDynMapHCPageOff(pVM, PGM_PAGE_GET_HCPHYS(pPage) + (off & PAGE_OFFSET_MASK), &pvDst);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if defined(IN_RING3) && defined(PGM_PHYSMEMACCESS_CACHING)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync pgmPhysCacheAdd(pVM, &pVM->pgm.s.pgmphyswritecache, GCPhys, (uint8_t*)pvDst);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* IN_RING3 && PGM_PHYSMEMACCESS_CACHING */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * All reserved, nothing there.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * The rest needs to be taken more carefully.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#if 1 /** @todo r=bird: Can you do this properly please. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo Try MMIO; quick hack */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (cbWrite <= 8 && IOMMMIOWrite(pVM, GCPhys, *(uint32_t *)pvBuf, cbWrite) == VINF_SUCCESS)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo fix me later. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertReleaseMsgFailed(("Unknown write at %RGp size %u implement the complex physical writing case %RHp\n",
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync (pPage->HCPhys & (MM_RAM_FLAGS_RESERVED | MM_RAM_FLAGS_MMIO | MM_RAM_FLAGS_MMIO2)))); /** @todo PAGE FLAGS */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* skip the write */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Unassigned address space.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#ifndef IN_RC /* Ring 0 & 3 only. (Just not needed in GC.) */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Read from guest physical memory by GC physical address, bypassing
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * MMIO and access handlers.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvDst The destination address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhysSrc The source address (GC physical address).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to read.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysSimpleReadGCPhys(PVM pVM, void *pvDst, RTGCPHYS GCPhysSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Treat the first page as a special case.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the 1st page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync void const *pvSrc;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhysSrc, &pvSrc, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* optimize for the case where access is completely within the first page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbPage = PAGE_SIZE - (GCPhysSrc & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy to the end of the page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2CCPtrReadOnly(pVM, GCPhysSrc, &pvSrc, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* last page? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy the entire page and advance */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* won't ever get here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write to guest physical memory referenced by GC pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write memory to GC physical address in guest physical memory.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This will bypass MMIO and access handlers.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPhysDst The GC physical address of the destination.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvSrc The source buffer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysSimpleWriteGCPhys(PVM pVM, RTGCPHYS GCPhysDst, const void *pvSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysSimpleWriteGCPhys: %RGp %zu\n", GCPhysDst, cb));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Treat the first page as a special case.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the 1st page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMPhysGCPhys2CCPtr(pVM, GCPhysDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* optimize for the case where access is completely within the first page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbPage = PAGE_SIZE - (GCPhysDst & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy to the end of the page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPhys2CCPtr(pVM, GCPhysDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* last page? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy the entire page and advance */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* won't ever get here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Read from guest physical memory referenced by GC pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This function uses the current CR3/CR0/CR4 of the guest and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * bypass access handlers and not set any accessed bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvDst The destination address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrSrc The source address (GC pointer).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to read.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysSimpleReadGCPtr(PVM pVM, void *pvDst, RTGCPTR GCPtrSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Treat the first page as a special case.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the 1st page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync void const *pvSrc;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMPhysGCPtr2CCPtrReadOnly(pVM, GCPtrSrc, &pvSrc, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* optimize for the case where access is completely within the first page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbPage = PAGE_SIZE - ((RTGCUINTPTR)GCPtrSrc & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy to the end of the page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrSrc = (RTGCPTR)((RTGCUINTPTR)GCPtrSrc + cbPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPtr2CCPtrReadOnly(pVM, GCPtrSrc, &pvSrc, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* last page? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy the entire page and advance */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrSrc = (RTGCPTR)((RTGCUINTPTR)GCPtrSrc + PAGE_SIZE);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* won't ever get here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write to guest physical memory referenced by GC pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This function uses the current CR3/CR0/CR4 of the guest and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * bypass access handlers and not set dirty or accessed bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrDst The destination address (GC pointer).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvSrc The source address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysSimpleWriteGCPtr(PVM pVM, RTGCPTR GCPtrDst, const void *pvSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Treat the first page as a special case.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the 1st page */
d3faf04f5ef353bbc31bb75a17444d7902726d2evboxsync int rc = PGMPhysGCPtr2CCPtr(pVM, GCPtrDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* optimize for the case where access is completely within the first page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbPage = PAGE_SIZE - ((RTGCUINTPTR)GCPtrDst & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy to the end of the page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrDst = (RTGCPTR)((RTGCUINTPTR)GCPtrDst + cbPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPtr2CCPtr(pVM, GCPtrDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* last page? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy the entire page and advance */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrDst = (RTGCPTR)((RTGCUINTPTR)GCPtrDst + PAGE_SIZE);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* won't ever get here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write to guest physical memory referenced by GC pointer and update the PTE.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This function uses the current CR3/CR0/CR4 of the guest and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * bypass access handlers but will set any dirty and accessed bits in the PTE.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * If you don't want to set the dirty bit, use PGMPhysSimpleWriteGCPtr().
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrDst The destination address (GC pointer).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvSrc The source address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysSimpleDirtyWriteGCPtr(PVM pVM, RTGCPTR GCPtrDst, const void *pvSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Treat the first page as a special case.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Btw. this is the same code as in PGMPhyssimpleWriteGCPtr excep for the PGMGstModifyPage.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the 1st page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMPhysGCPtr2CCPtr(pVM, GCPtrDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* optimize for the case where access is completely within the first page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbPage = PAGE_SIZE - ((RTGCUINTPTR)GCPtrDst & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D)); AssertRC(rc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy to the end of the page. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D)); AssertRC(rc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrDst = (RTGCPTR)((RTGCUINTPTR)GCPtrDst + cbPage);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* map the page */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMPhysGCPtr2CCPtr(pVM, GCPtrDst, &pvDst, &Lock);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* last page? */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D)); AssertRC(rc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* copy the entire page and advance */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D)); AssertRC(rc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync GCPtrDst = (RTGCPTR)((RTGCUINTPTR)GCPtrDst + PAGE_SIZE);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* won't ever get here. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Read from guest physical memory referenced by GC pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This function uses the current CR3/CR0/CR4 of the guest and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * respect access handlers and set accessed bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvDst The destination address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrSrc The source address (GC pointer).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to read.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysReadGCPtr(PVM pVM, void *pvDst, RTGCPTR GCPtrSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Anything to do?
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysReadGCPtr: %RGv %zu\n", GCPtrSrc, cb));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Optimize reads within a single page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (((RTGCUINTPTR)GCPtrSrc & PAGE_OFFSET_MASK) + cb <= PAGE_SIZE)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Convert virtual to physical address */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* mark the guest page as accessed. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrSrc, 1, X86_PTE_A, ~(uint64_t)(X86_PTE_A));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Convert virtual to physical address */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* mark the guest page as accessed. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync int rc = PGMGstModifyPage(pVM, GCPtrSrc, 1, X86_PTE_A, ~(uint64_t)(X86_PTE_A));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbRead = PAGE_SIZE - ((RTGCUINTPTR)GCPtrSrc & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Write to guest physical memory referenced by GC pointer.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This function uses the current CR3/CR0/CR4 of the guest and will
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * respect access handlers and set dirty and accessed bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrDst The destination address (GC pointer).
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvSrc The source address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to write.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysWriteGCPtr(PVM pVM, RTGCPTR GCPtrDst, const void *pvSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Anything to do?
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync LogFlow(("PGMPhysWriteGCPtr: %RGv %zu\n", GCPtrDst, cb));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Optimize writes within a single page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync if (((RTGCUINTPTR)GCPtrDst & PAGE_OFFSET_MASK) + cb <= PAGE_SIZE)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Convert virtual to physical address */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgRCReturn(rc, ("PGMPhysGCPtr2GCPhys failed with %Rrc for %RGv\n", rc, GCPtrDst), rc);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* mark the guest page as accessed and dirty. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Page by page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Convert virtual to physical address */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* mark the guest page as accessed and dirty. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGMGstModifyPage(pVM, GCPtrDst, 1, X86_PTE_A | X86_PTE_D, ~(uint64_t)(X86_PTE_A | X86_PTE_D));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync size_t cbWrite = PAGE_SIZE - ((RTGCUINTPTR)GCPtrDst & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync#endif /* !IN_RC */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Performs a read of guest virtual memory for instruction emulation.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * This will check permissions, raise exceptions and update the access bits.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * The current implementation will bypass all access handlers. It may later be
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * changed to at least respect MMIO.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @returns VBox status code suitable to scheduling.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_SUCCESS if the read was performed successfully.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_EM_RAW_GUEST_TRAP if an exception was raised but not dispatched yet.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @retval VINF_TRPM_XCPT_DISPATCHED if an exception was raised and dispatched.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pVM The VM handle.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pCtxCore The context core.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param pvDst Where to put the bytes we've read.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param GCPtrSrc The source address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @param cb The number of bytes to read. Not more than a page.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * @remark This function will dynamically map physical pages in GC. This may unmap
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * mappings done by the caller. Be careful!
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsyncVMMDECL(int) PGMPhysInterpretedRead(PVM pVM, PCPUMCTXCORE pCtxCore, void *pvDst, RTGCUINTPTR GCPtrSrc, size_t cb)
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync/** @todo r=bird: This isn't perfect!
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * -# It's not checking for reserved bits being 1.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * -# It's not correctly dealing with the access bit.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * -# It's not respecting MMIO memory or any other access handlers.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * 1. Translate virtual to physical. This may fault.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * 2. Map the physical address.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * 3. Do the read operation.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * 4. Set access bits if required.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync unsigned cb1 = PAGE_SIZE - (GCPtrSrc & PAGE_OFFSET_MASK);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Not crossing pages.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(GetPage,pVM)(pVM, GCPtrSrc, &fFlags, &GCPhys);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo we should check reserved bits ... */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log(("PGMPhysInterpretedRead: pvDst=%p pvSrc=%p cb=%d\n", pvDst, (uint8_t *)pvSrc + (GCPtrSrc & PAGE_OFFSET_MASK), cb));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync memcpy(pvDst, (uint8_t *)pvSrc + (GCPtrSrc & PAGE_OFFSET_MASK), cb);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync memset(pvDst, 0, cb); /** @todo this is wrong, it should be 0xff */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo access bit emulation isn't 100% correct. */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(ModifyPage,pVM)(pVM, GCPtrSrc, 1, X86_PTE_A, ~(uint64_t)X86_PTE_A);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Crosses pages.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(GetPage,pVM)(pVM, GCPtrSrc, &fFlags1, &GCPhys1);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(GetPage,pVM)(pVM, GCPtrSrc + cb1, &fFlags2, &GCPhys2);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /** @todo we should check reserved bits ... */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailed(("cb=%d cb1=%d cb2=%d GCPtrSrc=%RGv\n", cb, cb1, cb2, GCPtrSrc));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync memcpy(pvDst, (uint8_t *)pvSrc1 + (GCPtrSrc & PAGE_OFFSET_MASK), cb1);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync memset(pvDst, 0, cb1); /** @todo this is wrong, it should be 0xff */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync memset((uint8_t *)pvDst + cb1, 0, cb2); /** @todo this is wrong, it should be 0xff */
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(ModifyPage,pVM)(pVM, GCPtrSrc, 1, X86_PTE_A, ~(uint64_t)X86_PTE_A);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync rc = PGM_GST_PFN(ModifyPage,pVM)(pVM, GCPtrSrc + cb1, 1, X86_PTE_A, ~(uint64_t)X86_PTE_A);
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync * Raise a #PF.
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync /* Get the current privilege level. */
0d18f5b89ac6eb5d44c3e3d5453e55ab8cd7e804vboxsync uErr = (cpl >= 2) ? X86_TRAP_PF_RSVD | X86_TRAP_PF_US : X86_TRAP_PF_RSVD;
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync AssertMsgFailed(("rc=%Rrc GCPtrSrc=%RGv cb=%#x\n", rc, GCPtrSrc, cb));
9dca051a5f8ff457ef1692990f6ecfa280daf265vboxsync Log(("PGMPhysInterpretedRead: GCPtrSrc=%RGv cb=%#x -> #PF(%#x)\n", GCPtrSrc, cb, uErr));
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync return TRPMRaiseXcptErrCR2(pVM, pCtxCore, X86_XCPT_PF, uErr, GCPtrSrc);
ee4d840f54fd2dcea8a73b1b86d5ec0db370b05dvboxsync/// @todo VMMDECL(int) PGMPhysInterpretedWrite(PVM pVM, PCPUMCTXCORE pCtxCore, RTGCPTR GCPtrDst, const void *pvSrc, size_t cb)