/**
* Process raw-mode specific forced actions.
*
* This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK is pending.
*
* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
* EM statuses.
* @param pVM The cross context VM structure.
* @param pVCpu The cross context virtual CPU structure.
* @param pCtx Pointer to the guest CPU context.
*/
static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
{
/*
* Sync page directory.
*/
if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
{
Assert(pVCpu->em.s.enmState != EMSTATE_WAIT_SIPI);
int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
if (RT_FAILURE(rc))
return rc;
#ifdef VBOX_WITH_RAW_MODE
Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT));
#endif
/* Prefetch pages for EIP and ESP. */
/** @todo This is rather expensive. Should investigate if it really helps at all. */
rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_CS, CPUMCTX2CORE(pCtx), pCtx->rip));
if (rc == VINF_SUCCESS)
rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_SS, CPUMCTX2CORE(pCtx), pCtx->rsp));
if (rc != VINF_SUCCESS)
{
if (rc != VINF_PGM_SYNC_CR3)
{
AssertLogRelMsgReturn(RT_FAILURE(rc), ("%Rrc\n", rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
return rc;
}
rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
if (RT_FAILURE(rc))
return rc;
}
/** @todo maybe prefetch the supervisor stack page as well */
#ifdef VBOX_WITH_RAW_MODE
Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT | VMCPU_FF_SELM_SYNC_LDT));
#endif
}
/*
* Allocate handy pages (just in case the above actions have consumed some pages).
*/
if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
{
int rc = PGMR3PhysAllocateHandyPages(pVM);
if (RT_FAILURE(rc))
return rc;
}
/*
* Check whether we're out of memory now.
*
* This may stem from some of the above actions or operations that has been executed
* since we ran FFs. The allocate handy pages must for instance always be followed by
* this check.
*/
if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY))
return VINF_EM_NO_MEMORY;
return VINF_SUCCESS;
}
/**
* Rendezvous callback that will be called once.
*
* @returns VBox strict status code.
* @param pVM Pointer to the VM.
* @param pVCpu Pointer to the VMCPU of the calling EMT.
* @param pvUser Pointer to a VMCPUID with the requester's ID.
*/
static DECLCALLBACK(VBOXSTRICTRC) pgmR3SharedModuleRegRendezvous(PVM pVM, PVMCPU pVCpu, void *pvUser)
{
VMCPUID idCpu = *(VMCPUID *)pvUser;
/* Execute on the VCPU that issued the original request to make sure we're in the right cr3 context. */
if (pVCpu->idCpu != idCpu)
{
Assert(pVM->cCpus > 1);
return VINF_SUCCESS;
}
/* Flush all pending handy page operations before changing any shared page assignments. */
int rc = PGMR3PhysAllocateHandyPages(pVM);
AssertRC(rc);
/*
* Lock it here as we can't deal with busy locks in this ring-0 path.
*/
LogFlow(("pgmR3SharedModuleRegRendezvous: start (%d)\n", pVM->pgm.s.cSharedPages));
pgmLock(pVM);
pgmR3PhysAssertSharedPageChecksums(pVM);
rc = GMMR3CheckSharedModules(pVM);
pgmR3PhysAssertSharedPageChecksums(pVM);
pgmUnlock(pVM);
AssertLogRelRC(rc);
LogFlow(("pgmR3SharedModuleRegRendezvous: done (%d)\n", pVM->pgm.s.cSharedPages));
return rc;
}
