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[FAST486]

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Make sure the corrected prefetch address contains the block we're trying to read.


svn path=/trunk/; revision=65272
This commit is contained in:
Aleksandar Andrejevic 2014-11-05 20:21:32 +00:00
parent a66700e316
commit 6eb52f4986
1 changed files with 7 additions and 0 deletions
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7
reactos/lib/fast486/common.c
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@ -106,6 +106,13 @@ Fast486ReadMemory(PFAST486_STATE State,
/* We mustn't prefetch across a page boundary */
State->PrefetchAddress = PAGE_ALIGN(State->PrefetchAddress)
| (FAST486_PAGE_SIZE - FAST486_CACHE_SIZE);
if ((LinearAddress - State->PrefetchAddress + Size) >= FAST486_CACHE_SIZE)
{
/* We can't prefetch without possibly violating page permissions */
State->PrefetchValid = FALSE;
return Fast486ReadLinearMemory(State, LinearAddress, Buffer, Size);
}
}
/* Prefetch */