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Commit 6dc995a3 authored by Russell King's avatar Russell King
Browse files

ARM: fix PAGE_KERNEL 



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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 52e8bfd8

arch/arm/mm/mmu.c

+1 −2
Original line number Diff line number Diff line
@@ -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;