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x86: rename PTE_MASK to PTE_PFN_MASK 

Rusty, in his peevish way, complained that macros defining constants
should have a name which somewhat accurately reflects the actual
purpose of the constant.

Aside from the fact that PTE_MASK gives no clue as to what's actually
being masked, and is misleadingly similar to the functionally entirely
different PMD_MASK, PUD_MASK and PGD_MASK, I don't really see what the
problem is.

But if this patch silences the incessent noise, then it will have
achieved its goal (TODO: write test-case).

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 22:59:42 -07:00 committed by Ingo Molnar
parent c2e3277f87
commit 59438c9fc4
10 changed files with 28 additions and 28 deletions
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10
arch/x86/mm/dump_pagetables.c
View File

@ -148,8 +148,8 @@ static void note_page(struct seq_file *m, struct pg_state *st,
* we have now. "break" is either changing perms, levels or
* address space marker.
*/
prot = pgprot_val(new_prot) & ~(PTE_MASK);
cur = pgprot_val(st->current_prot) & ~(PTE_MASK);
prot = pgprot_val(new_prot) & ~(PTE_PFN_MASK);
cur = pgprot_val(st->current_prot) & ~(PTE_PFN_MASK);
if (!st->level) {
/* First entry */
@ -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_MASK;
pgprotval_t prot = pmd_val(*start) & ~PTE_PFN_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_MASK;
pgprotval_t prot = pud_val(*start) & ~PTE_PFN_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_MASK;
pgprotval_t prot = pgd_val(*start) & ~PTE_PFN_MASK;
if (pgd_large(*start) || !pgd_present(*start))
note_page(m, &st, __pgprot(prot), 1);

2
arch/x86/xen/enlighten.c
View File

@ -1435,7 +1435,7 @@ static unsigned long m2p(phys_addr_t maddr)
{
phys_addr_t paddr;
maddr &= PTE_MASK;
maddr &= PTE_PFN_MASK;
paddr = mfn_to_pfn(maddr >> PAGE_SHIFT) << PAGE_SHIFT;
return paddr;

8
arch/x86/xen/mmu.c
View File

@ -343,8 +343,8 @@ void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
static pteval_t pte_mfn_to_pfn(pteval_t val)
{
if (val & _PAGE_PRESENT) {
unsigned long mfn = (val & PTE_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_MASK;
unsigned long mfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_PFN_MASK;
val = ((pteval_t)mfn_to_pfn(mfn) << PAGE_SHIFT) | flags;
}
@ -354,8 +354,8 @@ static pteval_t pte_mfn_to_pfn(pteval_t val)
static pteval_t pte_pfn_to_mfn(pteval_t val)
{
if (val & _PAGE_PRESENT) {
unsigned long pfn = (val & PTE_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_MASK;
unsigned long pfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
pteval_t flags = val & ~PTE_PFN_MASK;
val = ((pteval_t)pfn_to_mfn(pfn) << PAGE_SHIFT) | flags;
}

6
include/asm-x86/page.h
View File

@ -18,8 +18,8 @@
(ie, 32-bit PAE). */
#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
/* PTE_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
#define PTE_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1))
@ -146,7 +146,7 @@ static inline pteval_t native_pte_val(pte_t pte)
static inline pteval_t native_pte_flags(pte_t pte)
{
return native_pte_val(pte) & ~PTE_MASK;
return native_pte_val(pte) & ~PTE_PFN_MASK;
}
#define pgprot_val(x) ((x).pgprot)

2
include/asm-x86/paravirt.h
View File

@ -1089,7 +1089,7 @@ static inline pteval_t pte_flags(pte_t pte)
pte.pte);
#ifdef CONFIG_PARAVIRT_DEBUG
BUG_ON(ret & PTE_MASK);
BUG_ON(ret & PTE_PFN_MASK);
#endif
return ret;
}

8
include/asm-x86/pgtable-3level.h
View File

@ -25,7 +25,7 @@ static inline int pud_none(pud_t pud)
static inline int pud_bad(pud_t pud)
{
return (pud_val(pud) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER)) != 0;
return (pud_val(pud) & ~(PTE_PFN_MASK | _KERNPG_TABLE | _PAGE_USER)) != 0;
}
static inline int pud_present(pud_t pud)
@ -120,9 +120,9 @@ static inline void pud_clear(pud_t *pudp)
write_cr3(pgd);
}
#define pud_page(pud) ((struct page *) __va(pud_val(pud) & PTE_MASK))
#define pud_page(pud) ((struct page *) __va(pud_val(pud) & PTE_PFN_MASK))
#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PTE_MASK))
#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PTE_PFN_MASK))
/* Find an entry in the second-level page table.. */
@ -160,7 +160,7 @@ static inline int pte_none(pte_t pte)
static inline unsigned long pte_pfn(pte_t pte)
{
return (pte_val(pte) & PTE_MASK) >> PAGE_SHIFT;
return (pte_val(pte) & PTE_PFN_MASK) >> PAGE_SHIFT;
}
/*

4
include/asm-x86/pgtable.h
View File

@ -53,7 +53,7 @@
_PAGE_DIRTY)
/* Set of bits not changed in pte_modify */
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_PCD | _PAGE_PWT | \
#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
_PAGE_ACCESSED | _PAGE_DIRTY)
#define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT)
@ -286,7 +286,7 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
return __pgprot(preservebits | addbits);
}
#define pte_pgprot(x) __pgprot(pte_flags(x) & ~PTE_MASK)
#define pte_pgprot(x) __pgprot(pte_flags(x) & ~PTE_PFN_MASK)
#define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)

4
include/asm-x86/pgtable_32.h
View File

@ -88,7 +88,7 @@ extern unsigned long pg0[];
/* To avoid harmful races, pmd_none(x) should check only the lower when PAE */
#define pmd_none(x) (!(unsigned long)pmd_val((x)))
#define pmd_present(x) (pmd_val((x)) & _PAGE_PRESENT)
#define pmd_bad(x) ((pmd_val(x) & (~PTE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
#define pmd_bad(x) ((pmd_val(x) & (~PTE_PFN_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
@ -139,7 +139,7 @@ static inline int pud_large(pud_t pud) { return 0; }
#define pmd_page(pmd) (pfn_to_page(pmd_val((pmd)) >> PAGE_SHIFT))
#define pmd_page_vaddr(pmd) \
((unsigned long)__va(pmd_val((pmd)) & PTE_MASK))
((unsigned long)__va(pmd_val((pmd)) & PTE_PFN_MASK))
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \

10
include/asm-x86/pgtable_64.h
View File

@ -158,17 +158,17 @@ static inline void native_pgd_clear(pgd_t *pgd)
static inline int pgd_bad(pgd_t pgd)
{
return (pgd_val(pgd) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
return (pgd_val(pgd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
}
static inline int pud_bad(pud_t pud)
{
return (pud_val(pud) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
return (pud_val(pud) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
}
static inline int pmd_bad(pmd_t pmd)
{
return (pmd_val(pmd) & ~(PTE_MASK | _PAGE_USER)) != _KERNPG_TABLE;
return (pmd_val(pmd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
}
#define pte_none(x) (!pte_val((x)))
@ -193,7 +193,7 @@ static inline int pmd_bad(pmd_t pmd)
* Level 4 access.
*/
#define pgd_page_vaddr(pgd) \
((unsigned long)__va((unsigned long)pgd_val((pgd)) & PTE_MASK))
((unsigned long)__va((unsigned long)pgd_val((pgd)) & PTE_PFN_MASK))
#define pgd_page(pgd) (pfn_to_page(pgd_val((pgd)) >> PAGE_SHIFT))
#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_PRESENT)
static inline int pgd_large(pgd_t pgd) { return 0; }
@ -216,7 +216,7 @@ static inline int pud_large(pud_t pte)
}
/* PMD - Level 2 access */
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val((pmd)) & PTE_MASK))
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val((pmd)) & PTE_PFN_MASK))
#define pmd_page(pmd) (pfn_to_page(pmd_val((pmd)) >> PAGE_SHIFT))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))

2
include/asm-x86/xen/page.h
View File

@ -124,7 +124,7 @@ static inline unsigned long mfn_to_local_pfn(unsigned long mfn)
static inline unsigned long pte_mfn(pte_t pte)
{
return (pte.pte & PTE_MASK) >> PAGE_SHIFT;
return (pte.pte & PTE_PFN_MASK) >> PAGE_SHIFT;
}
static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot)