From 684e7d5a80255c3d414f35ffb0230f646fc64f8a Mon Sep 17 00:00:00 2001 From: Arve Hjønnevåg Date: Fri, 30 Nov 2012 17:05:40 -0800 Subject: ARM: decompressor: Flush tlb before swiching domain 0 to client mode If the bootloader used a page table that is incompatible with domain 0 in client mode, and boots with the mmu on, then swithing domain 0 to client mode causes a fault if we don't flush the tlb after updating the page table pointer. Signed-off-by: Arve Hjønnevåg --- arch/arm/boot/compressed/head.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index a2361900db1..4324416e26d 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -716,6 +716,7 @@ __armv7_mmu_cache_on: bic r6, r6, #1 << 31 @ 32-bit translation system bic r6, r6, #3 << 0 @ use only ttbr0 mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer + mcrne p15, 0, r0, c8, c7, 0 @ flush I,D TLBs mcrne p15, 0, r1, c3, c0, 0 @ load domain access control mcrne p15, 0, r6, c2, c0, 2 @ load ttb control #endif -- cgit v1.2.3-54-g00ecf