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| author | Catalin Marinas <catalin.marinas@arm.com> | 2015-03-23 16:06:50 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-03-23 19:42:23 +0100 |
| commit | e53f21bce4d35a93b23d8fa1a840860f6c74f59e (patch) | |
| tree | cd0e64aa540516070de9227e40137b88072ed716 /arch/arm64/include/asm/cmpxchg.h | |
| parent | Linux 4.0-rc5 (diff) | |
| download | linux-e53f21bce4d35a93b23d8fa1a840860f6c74f59e.tar.xz linux-e53f21bce4d35a93b23d8fa1a840860f6c74f59e.zip | |
arm64: Use the reserved TTBR0 if context switching to the init_mm
The idle_task_exit() function may call switch_mm() with next ==
&init_mm. On arm64, init_mm.pgd cannot be used for user mappings, so
this patch simply sets the reserved TTBR0.
Cc: <stable@vger.kernel.org>
Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Tested-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cmpxchg.h')
0 files changed, 0 insertions, 0 deletions