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| author | Arve Hjønnevåg <arve@android.com> | 2012-11-30 17:05:40 -0800 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2013-02-22 15:27:50 -0800 |
| commit | 684e7d5a80255c3d414f35ffb0230f646fc64f8a (patch) | |
| tree | 79b0d7303ae31abe213c517454696e9b7607aa2b | |
| parent | 56063b2f83a2f33ca89f0629f138c951fbca5752 (diff) | |
| download | common-684e7d5a80255c3d414f35ffb0230f646fc64f8a.tar.gz | |
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 <arve@android.com>
| -rw-r--r-- | 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 a2361900db16..4324416e26d5 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 |