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Date: Tue, 11 Dec 2012 17:41:04 -0800 From: Arve Hjønnevåg <arve@...roid.com> To: linux-kernel@...r.kernel.org Cc: r.sricharan@...com, santosh.shilimkar@...com, rmk+kernel@....linux.org.uk, Arve Hjønnevåg <arve@...roid.com>, linux-arm-kernel@...ts.infradead.org (moderated list:ARM PORT) Subject: [PATCH] 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, 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 <arve@...roid.com> --- arch/arm/boot/compressed/head.S | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 90275f0..9c8034c 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -704,6 +704,7 @@ __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 -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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