Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-06-24 06:51:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTOS:MM] Let ARM3 handle invalid PDE for itself.

Browse source
This commit is contained in:
Jérôme Gardou 2021-02-19 16:57:33 +01:00 committed by Jérôme Gardou
parent 36a92e6ea5
commit 7bffb92099
1 changed files with 6 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
ntoskrnl/mm/i386/page.c
View file

@ -186,17 +186,6 @@ ProtectToPTE(ULONG flProtect)
return(Attributes);
}
NTSTATUS
NTAPI
MiDispatchFault(IN ULONG FaultCode,
IN PVOID Address,
IN PMMPTE PointerPte,
IN PMMPTE PointerProtoPte,
IN BOOLEAN Recursive,
IN PEPROCESS Process,
IN PVOID TrapInformation,
IN PVOID Vad);
NTSTATUS
NTAPI
MiFillSystemPageDirectory(IN PVOID Base,
@ -244,32 +233,17 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create, PKIRQ
}
return Pt + MiAddressToPteOffset(Address);
}
/* This is for our process */
PointerPde = MiAddressToPde(Address);
Pt = (PULONG)MiAddressToPte(Address);
if (PointerPde->u.Hard.Valid == 0)
{
NTSTATUS Status;
if (Create == FALSE)
{
return NULL;
}
ASSERT(PointerPde->u.Long == 0);
MI_WRITE_INVALID_PTE(PointerPde, DemandZeroPde);
// Tiny HACK: Parameter 1 is the architecture specific FaultCode for an access violation (i.e. page is present)
Status = MiDispatchFault(0x1,
Pt,
PointerPde,
NULL,
FALSE,
PsGetCurrentProcess(),
NULL,
NULL);
DBG_UNREFERENCED_LOCAL_VARIABLE(Status);
ASSERT(KeAreAllApcsDisabled() == TRUE);
ASSERT(PointerPde->u.Hard.Valid == 1);
if ((PointerPde->u.Hard.Valid == 0) && (Create == FALSE))
{
/* Do not fault PDE in if not needed */
return NULL;
}
return (PULONG)MiAddressToPte(Address);
}