PFN_NUMBER MmResidentAvailablePages;
PFN_NUMBER MmResidentAvailableAtInit;
-SIZE_T MmTotalCommitLimit;
SIZE_T MmTotalCommittedPages;
SIZE_T MmSharedCommit;
SIZE_T MmDriverCommit;
SIZE_T MmProcessCommit;
SIZE_T MmPagedPoolCommit;
-SIZE_T MmPeakCommitment;
+SIZE_T MmPeakCommitment;
SIZE_T MmtotalCommitLimitMaximum;
static RTL_BITMAP MiUserPfnBitMap;
MiInitializeUserPfnBitmap(VOID)
{
PVOID Bitmap;
-
+
/* Allocate enough buffer for the PFN bitmap and align it on 32-bits */
Bitmap = ExAllocatePoolWithTag(NonPagedPool,
(((MmHighestPhysicalPage + 1) + 31) / 32) * 4,
/* Initialize it and clear all the bits to begin with */
RtlInitializeBitMap(&MiUserPfnBitMap,
Bitmap,
- MmHighestPhysicalPage + 1);
+ (ULONG)MmHighestPhysicalPage + 1);
RtlClearAllBits(&MiUserPfnBitMap);
}
{
ULONG Position;
KIRQL OldIrql;
-
+
/* Find the first user page */
OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Position = RtlFindSetBits(&MiUserPfnBitMap, 1, 0);
KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
if (Position == 0xFFFFFFFF) return 0;
-
+
/* Return it */
ASSERT(Position != 0);
ASSERT_IS_ROS_PFN(MiGetPfnEntry(Position));
/* Set the page as a user page */
ASSERT(Pfn != 0);
ASSERT_IS_ROS_PFN(MiGetPfnEntry(Pfn));
+ ASSERT(!RtlCheckBit(&MiUserPfnBitMap, (ULONG)Pfn));
OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- RtlSetBit(&MiUserPfnBitMap, Pfn);
+ RtlSetBit(&MiUserPfnBitMap, (ULONG)Pfn);
KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
{
ULONG Position;
KIRQL OldIrql;
-
+
/* Find the next user page */
OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- Position = RtlFindSetBits(&MiUserPfnBitMap, 1, PreviousPfn + 1);
+ Position = RtlFindSetBits(&MiUserPfnBitMap, 1, (ULONG)PreviousPfn + 1);
KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
if (Position == 0xFFFFFFFF) return 0;
-
+
/* Return it */
ASSERT(Position != 0);
ASSERT_IS_ROS_PFN(MiGetPfnEntry(Position));
NTAPI
MmRemoveLRUUserPage(PFN_NUMBER Page)
{
+ KIRQL OldIrql;
+
/* Unset the page as a user page */
ASSERT(Page != 0);
ASSERT_IS_ROS_PFN(MiGetPfnEntry(Page));
- RtlClearBit(&MiUserPfnBitMap, Page);
+ ASSERT(RtlCheckBit(&MiUserPfnBitMap, (ULONG)Page));
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
+ RtlClearBit(&MiUserPfnBitMap, (ULONG)Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
BOOLEAN
PPHYSICAL_PAGE Pfn1;
INT LookForZeroedPages;
ASSERT(KeGetCurrentIrql() <= APC_LEVEL);
-
+ DPRINT1("ARM3-DEBUG: Being called with %I64x %I64x %I64x %lx %d %d\n", LowAddress, HighAddress, SkipBytes, TotalBytes, CacheAttribute, MdlFlags);
+
//
// Convert the low address into a PFN
//
LowPage = (PFN_NUMBER)(LowAddress.QuadPart >> PAGE_SHIFT);
-
+
//
// Convert, and normalize, the high address into a PFN
//
- HighPage = (PFN_NUMBER)(HighAddress.QuadPart >> PAGE_SHIFT);
+ HighPage = (PFN_NUMBER)(HighAddress.QuadPart >> PAGE_SHIFT);
if (HighPage > MmHighestPhysicalPage) HighPage = MmHighestPhysicalPage;
-
+
//
// Validate skipbytes and convert them into pages
//
if (BYTE_OFFSET(SkipBytes.LowPart)) return NULL;
SkipPages = (PFN_NUMBER)(SkipBytes.QuadPart >> PAGE_SHIFT);
-
+
/* This isn't supported at all */
if (SkipPages) DPRINT1("WARNING: Caller requesting SkipBytes, MDL might be mismatched\n");
//
Mdl = MmCreateMdl(NULL, NULL, PageCount << PAGE_SHIFT);
if (Mdl) break;
-
+
//
// This function is not required to return the amount of pages requested
// In fact, it can return as little as 1 page, and callers are supposed
//
PageCount -= (PageCount >> 4);
} while (PageCount);
-
+
//
// Wow, not even a single page was around!
//
if (!Mdl) return NULL;
-
+
//
// This is where the page array starts....
//
MdlPage = (PPFN_NUMBER)(Mdl + 1);
-
+
//
// Lock the PFN database
//
OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
-
+
//
// Are we looking for any pages, without discriminating?
//
ASSERT(PagesFound);
break;
}
-
+
/* Grab the page entry for it */
Pfn1 = MiGetPfnEntry(Page);
-
+
//
// Make sure it's really free
//
ASSERT(Pfn1->u3.e2.ReferenceCount == 0);
-
+
/* Now setup the page and mark it */
Pfn1->u3.e2.ReferenceCount = 1;
Pfn1->u2.ShareCount = 1;
Pfn1->u3.e1.StartOfAllocation = 1;
Pfn1->u3.e1.EndOfAllocation = 1;
Pfn1->u4.VerifierAllocation = 0;
-
+
//
// Save it into the MDL
//
//
Pfn1 = MiGetPfnEntry(Page);
ASSERT(Pfn1);
-
+
//
// Make sure it's free and if this is our first pass, zeroed
//
if (MiIsPfnInUse(Pfn1)) continue;
if ((Pfn1->u3.e1.PageLocation == ZeroedPageList) != LookForZeroedPages) continue;
-
+
/* Remove the page from the free or zero list */
ASSERT(Pfn1->u3.e1.ReadInProgress == 0);
MI_SET_USAGE(MI_USAGE_MDL);
MI_SET_PROCESS2("Kernel");
MiUnlinkFreeOrZeroedPage(Pfn1);
-
+
//
// Sanity checks
//
ASSERT(Pfn1->u3.e2.ReferenceCount == 0);
-
+
//
// Now setup the page and mark it
//
*MdlPage++ = Page;
if (++PagesFound == PageCount) break;
}
-
+
//
// If the first pass was enough, don't keep going, otherwise, go again
//
if (PagesFound == PageCount) break;
}
}
-
+
//
// Now release the PFN count
//
KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
-
+
//
// We might've found less pages, but not more ;-)
//
// If we didn' tfind any pages at all, fail
//
DPRINT1("NO MDL PAGES!\n");
- ExFreePool(Mdl);
+ ExFreePoolWithTag(Mdl, TAG_MDL);
return NULL;
}
-
+
//
// Write out how many pages we found
//
Mdl->ByteCount = (ULONG)(PagesFound << PAGE_SHIFT);
-
+
//
// Terminate the MDL array if there's certain missing pages
//
if (PagesFound != PageCount) *MdlPage = LIST_HEAD;
-
+
//
// Now go back and loop over all the MDL pages
//
//
Page = *MdlPage++;
if (Page == LIST_HEAD) break;
-
+
//
// Get the PFN entry for the page and check if we should zero it out
//
if (Pfn1->u3.e1.PageLocation != ZeroedPageList) MiZeroPhysicalPage(Page);
Pfn1->u3.e1.PageLocation = ActiveAndValid;
}
-
+
//
// We're done, mark the pages as locked
//
Mdl->Process = NULL;
- Mdl->MdlFlags |= MDL_PAGES_LOCKED;
+ Mdl->MdlFlags |= MDL_PAGES_LOCKED;
return Mdl;
}
{
KIRQL oldIrql;
PMMPFN Pfn1;
-
+
oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Pfn1 = MiGetPfnEntry(Pfn);
ASSERT(Pfn1);
{
/* Should not be trying to insert an RMAP for a non-active page */
ASSERT(MiIsPfnInUse(Pfn1) == TRUE);
-
+
/* Set the list head address */
MI_GET_ROS_DATA(Pfn1)->RmapListHead = ListHead;
}
{
/* ReactOS semantics dictate the page is STILL active right now */
ASSERT(MiIsPfnInUse(Pfn1) == TRUE);
-
+
/* In this case, the RMAP is actually being removed, so clear field */
MI_GET_ROS_DATA(Pfn1)->RmapListHead = NULL;
/* ReactOS semantics will now release the page, which will make it free and enter a colored list */
}
-
+
KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
}
Pfn1 = MiGetPfnEntry(Pfn);
ASSERT(Pfn1);
ASSERT_IS_ROS_PFN(Pfn1);
-
+
/* Get the list head */
ListHead = MI_GET_ROS_DATA(Pfn1)->RmapListHead;
-
+
/* Should not have an RMAP for a non-active page */
ASSERT(MiIsPfnInUse(Pfn1) == TRUE);
-
+
/* Release PFN database and return rmap list head */
KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
return ListHead;
{
KIRQL oldIrql;
PPHYSICAL_PAGE Page;
-
+
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
ASSERT_IS_ROS_PFN(Page);
-
+
oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MI_GET_ROS_DATA(Page)->SwapEntry = SwapEntry;
KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
SWAPENTRY SwapEntry;
KIRQL oldIrql;
PPHYSICAL_PAGE Page;
-
+
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
ASSERT_IS_ROS_PFN(Page);
DPRINT("MmReferencePage(PysicalAddress %x)\n", Pfn << PAGE_SHIFT);
- if (Pfn == 0 || Pfn > MmHighestPhysicalPage)
- {
- return;
- }
+ ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
+ ASSERT(Pfn != 0);
+ ASSERT(Pfn <= MmHighestPhysicalPage);
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
ASSERT_IS_ROS_PFN(Page);
-
+
+ ASSERT(Page->u3.e2.ReferenceCount != 0);
Page->u3.e2.ReferenceCount++;
}
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
ASSERT_IS_ROS_PFN(Page);
-
+
+ ASSERT(Page->u3.e2.ReferenceCount != 0);
Page->u3.e2.ReferenceCount--;
if (Page->u3.e2.ReferenceCount == 0)
{
/* Mark the page temporarily as valid, we're going to make it free soon */
Page->u3.e1.PageLocation = ActiveAndValid;
-
+
/* It's not a ROS PFN anymore */
Page->u4.AweAllocation = FALSE;
- ExFreePool(MI_GET_ROS_DATA(Page));
+ ExFreePoolWithTag(MI_GET_ROS_DATA(Page), 'RsPf');
Page->RosMmData = 0;
/* Bring it back into the free list */
{
PFN_NUMBER PfnOffset;
PMMPFN Pfn1;
-
+
PfnOffset = MiRemoveZeroPage(MI_GET_NEXT_COLOR());
if (!PfnOffset)
Pfn1 = MiGetPfnEntry(PfnOffset);
Pfn1->u3.e2.ReferenceCount = 1;
Pfn1->u3.e1.PageLocation = ActiveAndValid;
-
+
/* This marks the PFN as a ReactOS PFN */
Pfn1->u4.AweAllocation = TRUE;
-
+
/* Allocate the extra ReactOS Data and zero it out */
Pfn1->RosMmData = (LONG)ExAllocatePoolWithTag(NonPagedPool, sizeof(MMROSPFN), 'RsPf');
ASSERT(MI_GET_ROS_DATA(Pfn1) != NULL);
ASSERT_IS_ROS_PFN(Pfn1);
MI_GET_ROS_DATA(Pfn1)->SwapEntry = 0;
MI_GET_ROS_DATA(Pfn1)->RmapListHead = NULL;
-
+
return PfnOffset;
}
projects / reactos.git / blobdiff