Commit 2a21dc7c authored by Huacai Chen's avatar Huacai Chen Committed by Ralf Baechle

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: default avatarHuacai 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: default avatarRalf Baechle <ralf@linux-mips.org>
parent 4c9164b9
......@@ -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)
......
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