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- Change comments to match kernel coding style
- Remove EOL spaces.

svn path=/trunk/; revision=40290
This commit is contained in:
Aleksey Bragin 2009-03-29 19:32:37 +00:00
parent c1ff41171d
commit 46689e8b55
1 changed files with 28 additions and 66 deletions
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94
reactos/ntoskrnl/mm/hypermap.c
View file

@ -28,15 +28,11 @@ MiInitHyperSpace(VOID)
{
PMMPTE PointerPte;
//
// Get the hyperspace PTE and zero out the page table
//
/* Get the hyperspace PTE and zero out the page table */
PointerPte = MiAddressToPte(HYPER_SPACE);
RtlZeroMemory(PointerPte, PAGE_SIZE);
//
// Setup mapping PTEs
//
/* Setup mapping PTEs */
MmFirstReservedMappingPte = MiAddressToPte(MI_MAPPING_RANGE_START);
MmLastReservedMappingPte = MiAddressToPte(MI_MAPPING_RANGE_END);
MmFirstReservedMappingPte->u.Hard.PageFrameNumber = MI_HYPERSPACE_PTES;
@ -51,59 +47,41 @@ MiMapPageInHyperSpace(IN PEPROCESS Process,
MMPTE TempPte;
PMMPTE PointerPte;
PFN_NUMBER Offset;
PVOID Address;
//
// Never accept page 0
//
PVOID Address;
/* Never accept page 0 */
ASSERT(Page != 0);
//
// Build the PTE
//
/* Build the PTE */
TempPte = HyperTemplatePte;
TempPte.u.Hard.PageFrameNumber = Page;
//
// Pick the first hyperspace PTE
//
/* Pick the first hyperspace PTE */
PointerPte = MmFirstReservedMappingPte;
//
// Acquire the hyperlock
//
/* Acquire the hyperlock */
ASSERT(Process == PsGetCurrentProcess());
KeAcquireSpinLock(&Process->HyperSpaceLock, OldIrql);
//
// Now get the first free PTE
//
/* Now get the first free PTE */
Offset = PFN_FROM_PTE(PointerPte);
if (!Offset)
{
//
// Reset the PTEs
//
/* Reset the PTEs */
Offset = MI_HYPERSPACE_PTES;
KeFlushProcessTb();
}
//
// Prepare the next PTE
//
/* Prepare the next PTE */
PointerPte->u.Hard.PageFrameNumber = Offset - 1;
//
// Write the current PTE
//
/* Write the current PTE */
PointerPte += Offset;
ASSERT(PointerPte->u.Hard.Valid == 0);
ASSERT(TempPte.u.Hard.Valid == 1);
*PointerPte = TempPte;
//
// Return the address
//
/* Return the address */
Address = (PVOID)((ULONG_PTR)PointerPte << 10);
return Address;
}
@ -116,14 +94,10 @@ MiUnmapPageInHyperSpace(IN PEPROCESS Process,
{
ASSERT(Process == PsGetCurrentProcess());
//
// Blow away the mapping
//
/* Blow away the mapping */
MiAddressToPte(Address)->u.Long = 0;
//
// Release the hyperlock
//
/* Release the hyperlock */
ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
KeReleaseSpinLock(&Process->HyperSpaceLock, OldIrql);
}
@ -136,36 +110,24 @@ MiMapPageToZeroInHyperSpace(IN PFN_NUMBER Page)
PMMPTE PointerPte;
PVOID Address;
//
// Never accept page 0
//
/* Never accept page 0 */
ASSERT(Page != 0);
//
// Build the PTE
//
/* Build the PTE */
TempPte = HyperTemplatePte;
TempPte.u.Hard.PageFrameNumber = Page;
//
// Get the Zero PTE and its address
//
/* Get the Zero PTE and its address */
PointerPte = MiAddressToPte(MI_ZERO_PTE);
Address = (PVOID)((ULONG_PTR)PointerPte << 10);
//
// Invalidate the old address
//
/* Invalidate the old address */
__invlpg(Address);
//
// Write the current PTE
//
/* Write the current PTE */
TempPte.u.Hard.PageFrameNumber = Page;
*PointerPte = TempPte;
//
// Return the address
//
/* Return the address */
return Address;
}