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x86: page.h: make pte_t a union to always include

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Make sure pte_t, whatever its definition, has a pte element with type
pteval_t.  This allows common code to access it without needing to be
specifically parameterised on what pagetable mode we're compiling for.
For 32-bit, this means that pte_t becomes a union with "pte" and "{
pte_low, pte_high }" (PAE) or just "pte_low" (non-PAE).

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge
2008-01-30 13:32:57 +01:00
committed by Ingo Molnar
parent b7fff536d0
commit c8e5393ab3
10 changed files with 29 additions and 41 deletions
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10
include/asm-x86/page.h
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@@ -108,6 +108,16 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
#include <asm-generic/pgtable-nopmd.h>
#endif /* PAGETABLE_LEVELS >= 3 */
static inline pte_t native_make_pte(pteval_t val)
{
return (pte_t) { .pte = val };
}
static inline pteval_t native_pte_val(pte_t pte)
{
return pte.pte;
}
#define pgprot_val(x) ((x).pgprot)
#define __pgprot(x) ((pgprot_t) { (x) } )