/**
* Free a page allocated from the page pool by physical address.
* This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
* and MMR3PageAllocLow().
*
* @param pVM The cross context VM structure.
* @param HCPhysPage The physical address of the page to be freed.
* @thread The Emulation Thread.
*/
VMMR3DECL(void) MMR3PageFreeByPhys(PVM pVM, RTHCPHYS HCPhysPage)
{
void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.pPagePoolR3, HCPhysPage);
if (!pvPage)
pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.pPagePoolLowR3, HCPhysPage);
if (pvPage)
mmR3PagePoolFree(pVM->mm.s.pPagePoolR3, pvPage);
else
AssertMsgFailed(("Invalid address HCPhysPT=%#x\n", HCPhysPage));
}
/**
* Try convert physical address of a page to a HC virtual address.
* This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
* and MMR3PageAllocLow().
*
* @returns VBox status code.
* @param pVM The cross context VM structure.
* @param HCPhysPage The physical address of a page.
* @param ppvPage Where to store the address corresponding to HCPhysPage.
* @thread The Emulation Thread.
*/
VMMDECL(int) MMPagePhys2PageTry(PVM pVM, RTHCPHYS HCPhysPage, void **ppvPage)
{
void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
if (!pvPage)
{
pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
if (!pvPage)
return VERR_INVALID_POINTER;
}
*ppvPage = pvPage;
return VINF_SUCCESS;
}
/**
* Convert physical address of a page to a HC virtual address.
* This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
* and MMR3PageAllocLow().
*
* @returns Pointer to the page at that physical address.
* @param pVM The cross context VM structure.
* @param HCPhysPage The physical address of a page.
* @thread The Emulation Thread.
*/
VMMDECL(void *) MMPagePhys2Page(PVM pVM, RTHCPHYS HCPhysPage)
{
void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
if (!pvPage)
{
pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
if (!pvPage)
{
STAM_COUNTER_INC(&pVM->mm.s.CTX_SUFF(pPagePool)->cErrors);
AssertMsg(pvPage, ("Invalid HCPhysPage=%RHp specified\n", HCPhysPage));
}
}
return pvPage;
}
/**
* Convert physical address of a page to a HC virtual address.
* This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
* and MMR3PageAllocLow().
*
* @returns VBox status code.
* @param pVM The cross context VM structure.
* @param HCPhysPage The physical address of a page.
* @param ppvPage Where to store the address corresponding to HCPhysPage.
* @thread The Emulation Thread.
*/
VMMDECL(int) MMPagePhys2PageEx(PVM pVM, RTHCPHYS HCPhysPage, void **ppvPage)
{
void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
if (!pvPage)
{
pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
if (!pvPage)
{
STAM_COUNTER_INC(&pVM->mm.s.CTX_SUFF(pPagePool)->cErrors);
AssertMsg(pvPage, ("Invalid HCPhysPage=%RHp specified\n", HCPhysPage));
return VERR_INVALID_POINTER;
}
}
*ppvPage = pvPage;
return VINF_SUCCESS;
}