From 452ad61c3feeffbf2b5ff74f0a6797af3ba4882c Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Mon, 31 Oct 2011 13:30:43 -0500 Subject: [PATCH] powerpc/85xx: add some missing sync instructions in the CCSR relocation code Calls to tlbwe and tlbsx should be preceded with an isync/msync pair. Signed-off-by: Timur Tabi Signed-off-by: Kumar Gala --- arch/powerpc/cpu/mpc85xx/start.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S index 275accc..e519f35 100644 --- a/arch/powerpc/cpu/mpc85xx/start.S +++ b/arch/powerpc/cpu/mpc85xx/start.S @@ -352,6 +352,8 @@ purge_old_ccsr_tlb: li r1, 0 mtspr MAS6, r1 /* Search the current address space and PID */ + isync + msync tlbsx 0, r8 mfspr r1, MAS1 andis. r2, r1, MAS1_VALID@h /* Check for the Valid bit */ @@ -359,6 +361,8 @@ purge_old_ccsr_tlb: rlwinm r1, r1, 0, 1, 31 /* Clear Valid bit */ mtspr MAS1, r1 + isync + msync tlbwe 1: -- 2.7.4