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Subject[PATCH 34 of 36] x86: add and use pgd/pud/pmd_flags
Date
From
Add pgd/pud/pmd_flags which are analogous to pte_flags, and use them
where-ever we only care about testing the flags portions of the
respective entries.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
arch/x86/include/asm/page.h | 15 +++++++++++++++
arch/x86/include/asm/pgtable.h | 16 ++++++++--------
2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -95,6 +95,11 @@
return pgd.pgd;
}

+static inline pgdval_t pgd_flags(pgd_t pgd)
+{
+ return native_pgd_val(pgd) & PTE_FLAGS_MASK;
+}
+
#if PAGETABLE_LEVELS >= 3
#if PAGETABLE_LEVELS == 4
typedef struct { pudval_t pud; } pud_t;
@@ -117,6 +122,11 @@
}
#endif /* PAGETABLE_LEVELS == 4 */

+static inline pudval_t pud_flags(pud_t pud)
+{
+ return native_pud_val(pud) & PTE_FLAGS_MASK;
+}
+
typedef struct { pmdval_t pmd; } pmd_t;

static inline pmd_t native_make_pmd(pmdval_t val)
@@ -128,6 +138,11 @@
{
return pmd.pmd;
}
+
+static inline pmdval_t pmd_flags(pmd_t pmd)
+{
+ return native_pmd_val(pmd) & PTE_FLAGS_MASK;
+}
#else /* PAGETABLE_LEVELS == 2 */
#include <asm-generic/pgtable-nopmd.h>

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -241,7 +241,7 @@

static inline int pmd_large(pmd_t pte)
{
- return (pmd_val(pte) & (_PAGE_PSE | _PAGE_PRESENT)) ==
+ return (pmd_flags(pte) & (_PAGE_PSE | _PAGE_PRESENT)) ==
(_PAGE_PSE | _PAGE_PRESENT);
}

@@ -496,7 +496,7 @@

static inline int pmd_present(pmd_t pmd)
{
- return pmd_val(pmd) & _PAGE_PRESENT;
+ return pmd_flags(pmd) & _PAGE_PRESENT;
}

static inline int pmd_none(pmd_t pmd)
@@ -554,7 +554,7 @@

static inline int pmd_bad(pmd_t pmd)
{
- return (pmd_val(pmd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
+ return (pmd_flags(pmd) & ~_PAGE_USER) != _KERNPG_TABLE;
}

static inline unsigned long pages_to_mb(unsigned long npg)
@@ -573,7 +573,7 @@

static inline int pud_present(pud_t pud)
{
- return pud_val(pud) & _PAGE_PRESENT;
+ return pud_flags(pud) & _PAGE_PRESENT;
}

static inline unsigned long pud_page_vaddr(pud_t pud)
@@ -599,20 +599,20 @@

static inline int pud_large(pud_t pud)
{
- return (pud_val(pud) & (_PAGE_PSE | _PAGE_PRESENT)) ==
+ return (pud_flags(pud) & (_PAGE_PSE | _PAGE_PRESENT)) ==
(_PAGE_PSE | _PAGE_PRESENT);
}

static inline int pud_bad(pud_t pud)
{
- return (pud_val(pud) & ~(PTE_PFN_MASK | _KERNPG_TABLE | _PAGE_USER)) != 0;
+ return (pud_flags(pud) & ~(_KERNPG_TABLE | _PAGE_USER)) != 0;
}
#endif /* PAGETABLE_LEVELS > 2 */

#if PAGETABLE_LEVELS > 3
static inline int pgd_present(pgd_t pgd)
{
- return pgd_val(pgd) & _PAGE_PRESENT;
+ return pgd_flags(pgd) & _PAGE_PRESENT;
}

static inline unsigned long pgd_page_vaddr(pgd_t pgd)
@@ -638,7 +638,7 @@

static inline int pgd_bad(pgd_t pgd)
{
- return (pgd_val(pgd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
+ return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE;
}

static inline int pgd_none(pgd_t pgd)



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