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UnmapPage() requires the caller to deal with the debug page access marking, 

so the fallback implementations of UnmapPages() and UnmapArea() need to do
that. Not relevant for x86.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35476 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2010-02-15 19:10:44 +00:00
parent 0f2666ecc2
commit c1f3da7b5b
1 changed files with 34 additions and 0 deletions
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34
src/system/kernel/vm/VMTranslationMap.cpp
View File

@ -40,8 +40,25 @@ VMTranslationMap::UnmapPages(VMArea* area, addr_t base, size_t size,
addr_t address = base;
addr_t end = address + size;
#if DEBUG_PAGE_ACCESS
for (; address != end; address += B_PAGE_SIZE) {
addr_t physicalAddress;
uint32 flags;
if (map->Query(address, &physicalAddress, &flags) == B_OK
&& (flags & PAGE_PRESENT) == 0) {
vm_page* page = vm_lookup_page(physicalAddress / B_PAGE_SIZE);
if (page != NULL) {
DEBUG_PAGE_ACCESS_START(page);
UnmapPage(area, address, updatePageQueue);
DEBUG_PAGE_ACCESS_END(page);
} else
UnmapPage(area, address, updatePageQueue);
}
}
#else
for (; address != end; address += B_PAGE_SIZE)
UnmapPage(area, address, updatePageQueue);
#endif
}
@ -64,8 +81,25 @@ VMTranslationMap::UnmapArea(VMArea* area, bool deletingAddressSpace,
{
addr_t address = area->Base();
addr_t end = address + area->Size();
#if DEBUG_PAGE_ACCESS
for (; address != end; address += B_PAGE_SIZE) {
addr_t physicalAddress;
uint32 flags;
if (map->Query(address, &physicalAddress, &flags) == B_OK
&& (flags & PAGE_PRESENT) == 0) {
vm_page* page = vm_lookup_page(physicalAddress / B_PAGE_SIZE);
if (page != NULL) {
DEBUG_PAGE_ACCESS_START(page);
UnmapPage(area, address, true);
DEBUG_PAGE_ACCESS_END(page);
} else
UnmapPage(area, address, true);
}
}
#else
for (; address != end; address += B_PAGE_SIZE)
UnmapPage(area, address, true);
#endif
}