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Fixed MM_PageFault duplicating a page when it is only used once
[tpg/acess2.git]
/
Kernel
/
arch
/
x86
/
mm_virt.c
diff --git
a/Kernel/arch/x86/mm_virt.c
b/Kernel/arch/x86/mm_virt.c
index
a022da2
..
b2520b5
100644
(file)
--- a/
Kernel/arch/x86/mm_virt.c
+++ b/
Kernel/arch/x86/mm_virt.c
@@
-105,7
+105,7
@@
void MM_PageFault(Uint Addr, Uint ErrorCode, tRegs *Regs)
&& gaPageTable[Addr>>12] & PF_COW )
{
tPAddr paddr;
&& gaPageTable[Addr>>12] & PF_COW )
{
tPAddr paddr;
- if(MM_GetRefCount( gaPageTable[Addr>>12] & ~0xFFF ) ==
0
)
+ if(MM_GetRefCount( gaPageTable[Addr>>12] & ~0xFFF ) ==
1
)
{
gaPageTable[Addr>>12] &= ~PF_COW;
gaPageTable[Addr>>12] |= PF_PRESENT|PF_WRITE;
{
gaPageTable[Addr>>12] &= ~PF_COW;
gaPageTable[Addr>>12] |= PF_PRESENT|PF_WRITE;
@@
-381,7
+381,7
@@
Uint MM_ClearUser()
Uint MM_Clone()
{
Uint i, j;
Uint MM_Clone()
{
Uint i, j;
- Uint kStackBase =
gCurrentThread
->KernelStack - KERNEL_STACK_SIZE;
+ Uint kStackBase =
Proc_GetCurThread()
->KernelStack - KERNEL_STACK_SIZE;
void *tmp;
//ENTER("");
void *tmp;
//ENTER("");
@@
-621,7
+621,7
@@
Uint MM_MapTemp(tPAddr PAddr)
return TEMP_MAP_ADDR + (i << 12);
}
RELEASE( &gilTempMappings );
return TEMP_MAP_ADDR + (i << 12);
}
RELEASE( &gilTempMappings );
-
Proc
_Yield();
+
Threads
_Yield();
}
}
}
}
UCC
git Repository :: git.ucc.asn.au