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| author | Huacai Chen <chenhc@lemote.com> | 2015-03-29 10:54:05 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-01 17:22:09 +0200 |
| commit | 2a21dc7c196209d94cb570a0d340faa6c760f7f8 (patch) | |
| tree | 4c7cceb66386d80c32321b00ec3cb29912d36b21 | |
| parent | 4c9164b9f77cebe715db18f179329c48b95243bb (diff) | |
| download | op-kernel-dev-2a21dc7c196209d94cb570a0d340faa6c760f7f8.zip op-kernel-dev-2a21dc7c196209d94cb570a0d340faa6c760f7f8.tar.gz | |
MIPS: Hibernate: flush TLB entries earlier
We found that TLB mismatch not only happens after kernel resume, but
also happens during snapshot restore. So move it to the beginning of
swsusp_arch_suspend().
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: <stable@vger.kernel.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9621/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/power/hibernate.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/power/hibernate.S b/arch/mips/power/hibernate.S index 32a7c82..e7567c8 100644 --- a/arch/mips/power/hibernate.S +++ b/arch/mips/power/hibernate.S @@ -30,6 +30,8 @@ LEAF(swsusp_arch_suspend) END(swsusp_arch_suspend) LEAF(swsusp_arch_resume) + /* Avoid TLB mismatch during and after kernel resume */ + jal local_flush_tlb_all PTR_L t0, restore_pblist 0: PTR_L t1, PBE_ADDRESS(t0) /* source */ @@ -43,7 +45,6 @@ LEAF(swsusp_arch_resume) bne t1, t3, 1b PTR_L t0, PBE_NEXT(t0) bnez t0, 0b - jal local_flush_tlb_all /* Avoid TLB mismatch after kernel resume */ PTR_LA t0, saved_regs PTR_L ra, PT_R31(t0) PTR_L sp, PT_R29(t0) |
