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- Zero early-allocated pages for PFN DB itself, as suggested on the ros-dev mailing list, and hyperspace mapping seems to work, at least on x86. Fixes the "warm reboot-bug" in 2nd stage.

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svn path=/trunk/; revision=32400
This commit is contained in:
Aleksey Bragin 2008-02-17 13:08:28 +00:00
parent cc6beed26a
commit e86380de7f
1 changed files with 11 additions and 10 deletions
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21
reactos/ntoskrnl/mm/freelist.c
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@ -242,11 +242,11 @@ NTAPI
MmAllocEarlyPage(VOID)
{
PFN_TYPE Pfn;
/* Use one of our highest usable pages */
Pfn = MiFreeDescriptor->BasePage + MiFreeDescriptor->PageCount - 1;
MiFreeDescriptor->PageCount--;
/* Return it */
return Pfn;
}
@ -285,7 +285,7 @@ MmInitializePageList(VOID)
{
/* Use one of our highest usable pages */
Pfn = MmAllocEarlyPage();
/* Set the PFN */
Status = MmCreateVirtualMappingForKernel(Address,
PAGE_READWRITE,
@ -303,7 +303,7 @@ MmInitializePageList(VOID)
MmSetPageProtect(NULL, Address, PAGE_READWRITE);
}
}
/* Clear the PFN database */
RtlZeroMemory(MmPageArray, (MmPageArraySize + 1) * sizeof(PHYSICAL_PAGE));
@ -386,8 +386,7 @@ MmInitializePageList(VOID)
MmStats.NrTotalPages = MmStats.NrFreePages + MmStats.NrSystemPages + MmStats.NrUserPages;
MmInitializeBalancer(MmStats.NrFreePages, MmStats.NrSystemPages);
}
#endif
#else
VOID
NTAPI
MmInitializePageList()
@ -427,9 +426,8 @@ MmInitializePageList()
if (!MmIsPagePresent(NULL, Address))
{
/* Use one of our highest usable pages */
Pfn = MiFreeDescriptor->BasePage + MiFreeDescriptor->PageCount - 1;
MiFreeDescriptor->PageCount--;
Pfn = MmAllocEarlyPage();
/* Set the PFN */
Status = MmCreateVirtualMappingForKernel(Address,
PAGE_READWRITE,
@ -579,6 +577,7 @@ MmInitializePageList()
MmStats.NrTotalPages = MmStats.NrFreePages + MmStats.NrSystemPages + MmStats.NrUserPages;
MmInitializeBalancer(MmStats.NrFreePages, MmStats.NrSystemPages);
}
#endif
VOID
NTAPI
@ -945,7 +944,9 @@ MmAllocPage(ULONG Consumer, SWAPENTRY SavedSwapEntry)
{
/* Allocate an early page -- we'll account for it later */
KeReleaseSpinLock(&PageListLock, oldIrql);
return MmAllocEarlyPage();
PfnOffset = MmAllocEarlyPage();
MiZeroPage(PfnOffset);
return PfnOffset;
}
DPRINT1("MmAllocPage(): Out of memory\n");