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[NTOSKRNL] Properly align runrefs on SMP in ExInitializeRundownProtectionCacheAware()

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This commit is contained in:
Pierre Schweitzer 2018-11-17 15:49:50 +01:00
parent c5db202bdc
commit acdf74aa3b
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GPG key ID: 7545556C3D585B0B
1 changed files with 8 additions and 3 deletions
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11
ntoskrnl/ex/rundown.c
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@ -581,7 +581,7 @@ ExInitializeRundownProtectionCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE RunRefCac
{
PVOID Pool;
PEX_RUNDOWN_REF RunRef;
ULONG Count, RunRefSize, Offset;
ULONG Count, RunRefSize, Offset, Align;
PAGED_CODE();
@ -601,8 +601,13 @@ ExInitializeRundownProtectionCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE RunRefCac
}
else
{
/* FIXME: Properly align on SMP */
UNIMPLEMENTED;
/* Get alignment constraint */
Align = KeGetRecommendedSharedDataAlignment();
/* How many runrefs given the alignment? */
RunRefSize = Align;
Count = ((Size - sizeof(EX_RUNDOWN_REF_CACHE_AWARE)) / Align) - 1;
Pool = (PVOID)ALIGN_UP_BY(Pool, Align);
}
/* Initialize the structure */