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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 16:37:11 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:31 +0200 |
| commit | 9666e9d44b83755c53615fb89c0787b6846786a1 (patch) | |
| tree | 2b0186c3a71f1e49a52e84221bdfdad9eb110c4a | |
| parent | 3b4724b0e60cdfdc2679ee7135f3a234c74c2b83 (diff) | |
| download | op-kernel-dev-9666e9d44b83755c53615fb89c0787b6846786a1.zip op-kernel-dev-9666e9d44b83755c53615fb89c0787b6846786a1.tar.gz | |
xen: unify pte operations on machine frames
Xen's pte operations on mfns can be unified like the kernel's pfn operations.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/xen/page.h | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/include/xen/page.h b/include/xen/page.h index 1742f60..0179930 100644 --- a/include/xen/page.h +++ b/include/xen/page.h @@ -125,37 +125,37 @@ static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn) #define virt_to_mfn(v) (pfn_to_mfn(PFN_DOWN(__pa(v)))) #define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT)) -#ifdef CONFIG_X86_PAE -#define pte_mfn(_pte) (((_pte).pte_low >> PAGE_SHIFT) | \ - (((_pte).pte_high & 0xfff) << (32-PAGE_SHIFT))) +static inline unsigned long pte_mfn(pte_t pte) +{ + return (pte.pte & ~_PAGE_NX) >> PAGE_SHIFT; +} static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot) { pte_t pte; - pte.pte_high = (page_nr >> (32 - PAGE_SHIFT)) | - (pgprot_val(pgprot) >> 32); - pte.pte_high &= (__supported_pte_mask >> 32); - pte.pte_low = ((page_nr << PAGE_SHIFT) | pgprot_val(pgprot)); - pte.pte_low &= __supported_pte_mask; + pte.pte = ((phys_addr_t)page_nr << PAGE_SHIFT) | + (pgprot_val(pgprot) & __supported_pte_mask); return pte; } -static inline unsigned long long pte_val_ma(pte_t x) +static inline pteval_t pte_val_ma(pte_t pte) +{ + return pte.pte; +} + +static inline pte_t __pte_ma(pteval_t x) { - return x.pte; + return (pte_t) { .pte = x }; } + +#ifdef CONFIG_X86_PAE #define pmd_val_ma(v) ((v).pmd) #define pud_val_ma(v) ((v).pgd.pgd) -#define __pte_ma(x) ((pte_t) { .pte = (x) }) #define __pmd_ma(x) ((pmd_t) { (x) } ) #else /* !X86_PAE */ -#define pte_mfn(_pte) ((_pte).pte_low >> PAGE_SHIFT) -#define mfn_pte(pfn, prot) __pte_ma(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) -#define pte_val_ma(x) ((x).pte) #define pmd_val_ma(v) ((v).pud.pgd.pgd) -#define __pte_ma(x) ((pte_t) { (x) } ) #endif /* CONFIG_X86_PAE */ #define pgd_val_ma(x) ((x).pgd) |
