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