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ARM: fix PAGE_KERNEL

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PAGE_KERNEL should not be executable; any area marked executable can
be prefetched into the instruction cache.  We don't want vmalloc areas
to be read in this way.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-12-24 10:16:21 +00:00
parent 52e8bfd81a
commit 6dc995a3da
1 changed files with 1 additions and 2 deletions
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3
arch/arm/mm/mmu.c
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@ -453,8 +453,7 @@ static void __init build_mem_type_table(void)
pgprot_user = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | user_pgprot);
pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
L_PTE_DIRTY | L_PTE_WRITE |
L_PTE_EXEC | kern_pgprot);
L_PTE_DIRTY | L_PTE_WRITE | kern_pgprot);
mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;