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x86: add PTE_FLAGS_MASK

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PTE_PFN_MASK was getting lonely, so I made it a friend.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge
2008-07-21 22:59:56 -07:00
committed by Ingo Molnar
parent 59438c9fc4
commit 77be1fabd0
5 changed files with 11 additions and 8 deletions
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4
arch/x86/xen/mmu.c
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@@ -344,7 +344,7 @@ static pteval_t pte_mfn_to_pfn(pteval_t val)
{
if (val & _PAGE_PRESENT) {
unsigned long mfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_PFN_MASK;
pteval_t flags = val & PTE_FLAGS_MASK;
val = ((pteval_t)mfn_to_pfn(mfn) << PAGE_SHIFT) | flags;
}
@@ -355,7 +355,7 @@ static pteval_t pte_pfn_to_mfn(pteval_t val)
{
if (val & _PAGE_PRESENT) {
unsigned long pfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_PFN_MASK;
pteval_t flags = val & PTE_FLAGS_MASK;
val = ((pteval_t)pfn_to_mfn(pfn) << PAGE_SHIFT) | flags;
}