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author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-01-30 12:32:43 (GMT) |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 12:32:43 (GMT) |
commit | 881d90d0daaeac018b0d5beb739dd825ccee0143 (patch) | |
tree | c2b2b24032d503938110d83e7d143bf2b980b455 /include/asm-x86/page.h | |
parent | 38f0f12793a490ac633dbba2418172b7abfa077e (diff) | |
download | linux-fsl-qoriq-881d90d0daaeac018b0d5beb739dd825ccee0143.tar.xz |
x86: page.h: move and unify types for pagetable entry
# HG changeset patch
# User Jeremy Fitzhardinge <jeremy@xensource.com>
# Date 1199319654 28800
# Node ID 3bd7db6e85e66e7f3362874802df26a82fcb2d92
# Parent f7e7db3facd9406545103164f9be8f9ba1a2b549
x86: page.h: move and unify types for pagetable entry definitions
This patch:
1. Defines arch-specific types for the contents of a pagetable entry.
That is, 32-bit entries for 32-bit non-PAE, and 64-bit entries for
32-bit PAE and 64-bit. However, even though the latter two are the
same size, they're defined with different types in order to retain
compatibility with printk format strings, etc.
2. Defines arch-specific pte_t. This is different because 32-bit PAE
defines it in two halves, whereas 32-bit PAE and 64-bit define it as a
single entry. All the other pagetable levels can be defined in a
common way. This also defines arch-specific pte_val/make_pte functions.
3. Define PAGETABLE_LEVELS for each architecture variation, for later use.
4. Define common pagetable entry accessors in a paravirt-compatible
way. (64-bit does not yet use paravirt-ops in any way).
5. Convert a few instances of using a *_val() as an lvalue where it is
no longer a macro. There are still places in the 64-bit code which
use pte_val() as an lvalue.
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>
Diffstat (limited to 'include/asm-x86/page.h')
-rw-r--r-- | include/asm-x86/page.h | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index 014f087..00353eb 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -116,9 +116,57 @@ typedef struct { pteval_t pte; } pte_t; #ifdef CONFIG_X86_PAE #define __PHYSICAL_MASK_SHIFT 36 #define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 3 + +#ifndef __ASSEMBLY__ +typedef u64 pteval_t; +typedef u64 pmdval_t; +typedef u64 pudval_t; +typedef u64 pgdval_t; +typedef u64 pgprotval_t; +typedef u64 phys_addr_t; + +typedef struct { unsigned long pte_low, pte_high; } pte_t; + +static inline unsigned long long native_pte_val(pte_t pte) +{ + return pte.pte_low | ((unsigned long long)pte.pte_high << 32); +} + +static inline pte_t native_make_pte(unsigned long long val) +{ + return (pte_t) { .pte_low = val, .pte_high = (val >> 32) } ; +} + +#endif /* __ASSEMBLY__ + */ #else /* !CONFIG_X86_PAE */ #define __PHYSICAL_MASK_SHIFT 32 #define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 2 + +#ifndef __ASSEMBLY__ +typedef unsigned long pteval_t; +typedef unsigned long pmdval_t; +typedef unsigned long pudval_t; +typedef unsigned long pgdval_t; +typedef unsigned long pgprotval_t; +typedef unsigned long phys_addr_t; + +typedef struct { pteval_t pte_low; } pte_t; +typedef pte_t boot_pte_t; + +static inline unsigned long native_pte_val(pte_t pte) +{ + return pte.pte_low; +} + +static inline pte_t native_make_pte(unsigned long val) +{ + return (pte_t) { .pte_low = val }; +} + +#endif /* __ASSEMBLY__ */ #endif /* CONFIG_X86_PAE */ #ifdef CONFIG_HUGETLB_PAGE @@ -181,7 +229,6 @@ static void inline copy_user_page(void *to, void *from, unsigned long vaddr, alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE -#ifdef CONFIG_X86_64 typedef struct { pgdval_t pgd; } pgd_t; typedef struct { pgprotval_t pgprot; } pgprot_t; @@ -252,7 +299,6 @@ static inline pmdval_t native_pmd_val(pmd_t pmd) #endif /* CONFIG_PARAVIRT */ -#endif /* CONFIG_X86_64 */ #endif /* __ASSEMBLY__ */ |