From: Russell King Date: Wed, 23 Dec 2009 19:54:31 +0000 (+0000) Subject: ARM: Fix wrong shared bit for CPU write buffer bug test X-Git-Tag: v3.0~6374^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=52e8bfd81af5492a14cc3a4641d4c80d05b66bdb;p=platform%2Fkernel%2Flinux-amlogic.git 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 --- 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);