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[NTOS:MM] Remove some dead code from legacy Mm

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Jérôme Gardou 2021-04-26 18:18:23 +02:00 committed by Jérôme Gardou
parent 521d330d04
commit 82dd1afe33
4 changed files with 8 additions and 107 deletions
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2
ntoskrnl/include/internal/mm.h
View file

@ -744,7 +744,7 @@ VOID
NTAPI
MmCleanProcessAddressSpace(IN PEPROCESS Process);
NTSTATUS
VOID
NTAPI
MmDeleteProcessAddressSpace(IN PEPROCESS Process);

8
ntoskrnl/mm/ARM3/procsup.c
View file

@ -1326,12 +1326,18 @@ MmCleanProcessAddressSpace(IN PEPROCESS Process)
VOID
NTAPI
MmDeleteProcessAddressSpace2(IN PEPROCESS Process)
MmDeleteProcessAddressSpace(IN PEPROCESS Process)
{
PMMPFN Pfn1, Pfn2;
KIRQL OldIrql;
PFN_NUMBER PageFrameIndex;
#ifndef _M_AMD64
OldIrql = MiAcquireExpansionLock();
RemoveEntryList(&Process->MmProcessLinks);
MiReleaseExpansionLock(OldIrql);
#endif
//ASSERT(Process->CommitCharge == 0);
/* Remove us from the list */

33
ntoskrnl/mm/balance.c
View file

@ -254,13 +254,6 @@ MmTrimUserMemory(ULONG Target, ULONG Priority, PULONG NrFreedPages)
return STATUS_SUCCESS;
}
static BOOLEAN
MiIsBalancerThread(VOID)
{
return (MiBalancerThreadHandle != NULL) &&
(PsGetCurrentThreadId() == MiBalancerThreadId.UniqueThread);
}
VOID
NTAPI
MmRebalanceMemoryConsumers(VOID)
@ -320,32 +313,6 @@ MiBalancerThread(PVOID Unused)
{
ULONG InitialTarget = 0;
#if (_MI_PAGING_LEVELS == 2)
if (!MiIsBalancerThread())
{
/* Clean up the unused PDEs */
ULONG_PTR Address;
PEPROCESS Process = PsGetCurrentProcess();
/* Acquire PFN lock */
KIRQL OldIrql = MiAcquirePfnLock();
PMMPDE pointerPde;
for (Address = (ULONG_PTR)MI_LOWEST_VAD_ADDRESS;
Address < (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS;
Address += PTE_PER_PAGE * PAGE_SIZE)
{
if (MiQueryPageTableReferences((PVOID)Address) == 0)
{
pointerPde = MiAddressToPde(Address);
if (pointerPde->u.Hard.Valid)
MiDeletePte(pointerPde, MiPdeToPte(pointerPde), Process, NULL);
ASSERT(pointerPde->u.Hard.Valid == 0);
}
}
/* Release lock */
MiReleasePfnLock(OldIrql);
}
#endif
do
{
ULONG OldTarget = InitialTarget;

72
ntoskrnl/mm/marea.c
View file

@ -547,76 +547,4 @@ MiRosCleanupMemoryArea(
/* Make sure this worked! */
ASSERT(NT_SUCCESS(Status));
}
VOID
NTAPI
MmDeleteProcessAddressSpace2(IN PEPROCESS Process);
NTSTATUS
NTAPI
MmDeleteProcessAddressSpace(PEPROCESS Process)
{
#ifndef _M_AMD64
KIRQL OldIrql;
#endif
DPRINT("MmDeleteProcessAddressSpace(Process %p (%s))\n", Process,
Process->ImageFileName);
#ifndef _M_AMD64
OldIrql = MiAcquireExpansionLock();
RemoveEntryList(&Process->MmProcessLinks);
MiReleaseExpansionLock(OldIrql);
#endif
MmLockAddressSpace(&Process->Vm);
#if (_MI_PAGING_LEVELS == 2)
{
KIRQL OldIrql;
PVOID Address;
PMMPDE pointerPde;
/* Attach to Process */
KeAttachProcess(&Process->Pcb);
/* Acquire PFN lock */
OldIrql = MiAcquirePfnLock();
for (Address = MI_LOWEST_VAD_ADDRESS;
Address < MM_HIGHEST_VAD_ADDRESS;
Address = (PVOID)((ULONG_PTR)Address + (PTE_PER_PAGE * PAGE_SIZE)))
{
/* At this point all references should be dead */
if (MiQueryPageTableReferences(Address) != 0)
{
DPRINT1("Process %p, Address %p, UsedPageTableEntries %lu\n",
Process,
Address,
MiQueryPageTableReferences(Address));
ASSERT(MiQueryPageTableReferences(Address) == 0);
}
pointerPde = MiAddressToPde(Address);
/* Unlike in ARM3, we don't necesarrily free the PDE page as soon as reference reaches 0,
* so we must clean up a bit when process closes */
if (pointerPde->u.Hard.Valid)
MiDeletePte(pointerPde, MiPdeToPte(pointerPde), Process, NULL);
ASSERT(pointerPde->u.Hard.Valid == 0);
}
/* Release lock */
MiReleasePfnLock(OldIrql);
/* Detach */
KeDetachProcess();
}
#endif
MmUnlockAddressSpace(&Process->Vm);
DPRINT("Finished MmDeleteProcessAddressSpace()\n");
MmDeleteProcessAddressSpace2(Process);
return(STATUS_SUCCESS);
}
/* EOF */