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x86: prepare for the unification of the cpa code 

prepare for the unification of the cpa code, by unifying the
lookup_address() logic between 32-bit and 64-bit.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2008-01-30 13:33:59 +01:00
parent 55ce29ba16
commit bbb09f5cfc
2 changed files with 5 additions and 5 deletions
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4
arch/x86/mm/pageattr-test.c
View File

@ -20,10 +20,10 @@ enum {
LOWEST_LEVEL = 4,
LPS = (1 << PMD_SHIFT),
#elif defined(CONFIG_X86_PAE)
LOWEST_LEVEL = 3,
LOWEST_LEVEL = 4,
LPS = (1 << PMD_SHIFT),
#else
LOWEST_LEVEL = 3, /* lookup_address lies here */
LOWEST_LEVEL = 4, /* lookup_address lies here */
LPS = (1 << 22),
#endif
GPS = (1<<30)

6
arch/x86/mm/pageattr_32.c
View File

@ -29,10 +29,10 @@ pte_t *lookup_address(unsigned long address, int *level)
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return NULL;
*level = 2;
*level = 3;
if (pmd_large(*pmd))
return (pte_t *)pmd;
*level = 3;
*level = 4;
return pte_offset_kernel(pmd, address);
}
@ -136,7 +136,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot)
address < (unsigned long)&_etext &&
(pgprot_val(prot) & _PAGE_NX));
if (level == 3) {
if (level == 4) {
set_pte_atomic(kpte, mk_pte(page, canon_pgprot(prot)));
} else {
err = split_large_page(kpte, address);