From 52e8bfd81af5492a14cc3a4641d4c80d05b66bdb Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 23 Dec 2009 19:54:31 +0000 Subject: [PATCH 1/1] ARM: Fix wrong shared bit for CPU write buffer bug test It is unpredictable to have the same memory mapped using different shared bit settings for ARMv6 and ARMv7 CPUs. Fix this for the CPU write buffer bug test. Signed-off-by: Russell King --- arch/arm/mm/fault-armv.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index 7296022..56ee153 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -207,9 +207,8 @@ void __init check_writebuffer_bugs(void) page = alloc_page(GFP_KERNEL); if (page) { unsigned long *p1, *p2; - pgprot_t prot = __pgprot(L_PTE_PRESENT|L_PTE_YOUNG| - L_PTE_DIRTY|L_PTE_WRITE| - L_PTE_MT_BUFFERABLE); + pgprot_t prot = __pgprot_modify(PAGE_KERNEL, + L_PTE_MT_MASK, L_PTE_MT_BUFFERABLE); p1 = vmap(&page, 1, VM_IOREMAP, prot); p2 = vmap(&page, 1, VM_IOREMAP, prot); -- 1.8.2.3