[PATCH] MIPS: Hibernate: flush TLB entries earlier
From: Huacai Chen <hidden>
Date: 2014-12-19 14:28:11
Subsystem:
mips, the rest · Maintainers:
Thomas Bogendoerfer, Linus Torvalds
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(). Cc: <redacted> Signed-off-by: Huacai Chen <redacted> --- 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)
--
1.7.7.3