This is a note to let you know that I've just added the patch titled
powerpc: Fix action argument for cpufeatures-based TLB flush
to the 4.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-fix-action-argument-for-cpufeatures-based-tlb-flush.patch
and it can be found in the queue-4.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3b7af5c0fd9631762d1c4d7b4cee76f571dd3c2c Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@xxxxxxxxxx>
Date: Wed, 27 Sep 2017 12:55:51 +0800
Subject: powerpc: Fix action argument for cpufeatures-based TLB flush
From: Jeremy Kerr <jk@xxxxxxxxxx>
commit 3b7af5c0fd9631762d1c4d7b4cee76f571dd3c2c upstream.
Commit 41d0c2ecde19 ("powerpc/powernv: Fix local TLB flush for boot
and MCE on POWER9") introduced calls to __flush_tlb_power[89] from the
cpufeatures code, specifying the number of sets to flush.
However, these functions take an action argument, not a number of
sets. This means we hit the BUG() in __flush_tlb_{206,300} when using
cpufeatures-style configuration.
This change passes TLB_INVAL_SCOPE_GLOBAL instead.
Fixes: 41d0c2ecde19 ("powerpc/powernv: Fix local TLB flush for boot and MCE on POWER9")
Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx>
Reviewed-by: Nicholas Piggin <npiggin@xxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/kernel/dt_cpu_ftrs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -102,10 +102,10 @@ static void cpufeatures_flush_tlb(void)
case PVR_POWER8:
case PVR_POWER8E:
case PVR_POWER8NVL:
- __flush_tlb_power8(POWER8_TLB_SETS);
+ __flush_tlb_power8(TLB_INVAL_SCOPE_GLOBAL);
break;
case PVR_POWER9:
- __flush_tlb_power9(POWER9_TLB_SETS_HASH);
+ __flush_tlb_power9(TLB_INVAL_SCOPE_GLOBAL);
break;
default:
pr_err("unknown CPU version for boot TLB flush\n");
Patches currently in stable-queue which might be from jk@xxxxxxxxxx are
queue-4.13/powerpc-fix-action-argument-for-cpufeatures-based-tlb-flush.patch