x86: add PTE_FLAGS_MASK

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>

2 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index cc174fc412bc..a20d1fa64b4e 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -221,7 +221,7 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st, pud_t addr,
         for (i = 0; i < PTRS_PER_PMD; i++) {
                 st->current_address = normalize_addr(P + i * PMD_LEVEL_MULT);
                 if (!pmd_none(*start)) {
-                        pgprotval_t prot = pmd_val(*start) & ~PTE_PFN_MASK;
+                        pgprotval_t prot = pmd_val(*start) & PTE_FLAGS_MASK;
 
                         if (pmd_large(*start) || !pmd_present(*start))
                                 note_page(m, st, __pgprot(prot), 3);
@@ -253,7 +253,7 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, pgd_t addr,
         for (i = 0; i < PTRS_PER_PUD; i++) {
                 st->current_address = normalize_addr(P + i * PUD_LEVEL_MULT);
                 if (!pud_none(*start)) {
-                        pgprotval_t prot = pud_val(*start) & ~PTE_PFN_MASK;
+                        pgprotval_t prot = pud_val(*start) & PTE_FLAGS_MASK;
 
                         if (pud_large(*start) || !pud_present(*start))
                                 note_page(m, st, __pgprot(prot), 2);
@@ -288,7 +288,7 @@ static void walk_pgd_level(struct seq_file *m)
         for (i = 0; i < PTRS_PER_PGD; i++) {
                 st.current_address = normalize_addr(i * PGD_LEVEL_MULT);
                 if (!pgd_none(*start)) {
-                        pgprotval_t prot = pgd_val(*start) & ~PTE_PFN_MASK;
+                        pgprotval_t prot = pgd_val(*start) & PTE_FLAGS_MASK;
 
                         if (pgd_large(*start) || !pgd_present(*start))
                                 note_page(m, &st, __pgprot(prot), 1);
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 0db6912395ed..aa37469da696 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -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;
         }