[v2,01/12] powerpc/64s/exceptions: Fix in_mce accounting in unrecoverable path
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Message ID 20200325103410.157573-2-npiggin@gmail.com
State Superseded
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Series
  • powerpc/64: machine check and system reset fixes
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Context Check Description
snowpatch_ozlabs/needsstable success Patch has no Fixes tags
snowpatch_ozlabs/checkpatch warning total: 0 errors, 1 warnings, 0 checks, 10 lines checked
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (a87b93bdf800a4d7a42d95683624a4516e516b4f)

Commit Message

Nicholas Piggin March 25, 2020, 10:33 a.m. UTC
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kernel/exceptions-64s.S | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Mahesh J Salgaonkar March 27, 2020, 3:43 a.m. UTC | #1
On 2020-03-25 20:33:59 Wed, Nicholas Piggin wrote:
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
>  arch/powerpc/kernel/exceptions-64s.S | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
> index 6a936c9199d6..67cbcb2d0c7f 100644
> --- a/arch/powerpc/kernel/exceptions-64s.S
> +++ b/arch/powerpc/kernel/exceptions-64s.S
> @@ -1335,6 +1335,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
>  	andc	r10,r10,r3
>  	mtmsrd	r10
> 
> +	lhz	r12,PACA_IN_MCE(r13)
> +	subi	r12,r12,1
> +	sth	r12,PACA_IN_MCE(r13)
> +

Acked-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>

Thanks,
-Mahesh.

Patch
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diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 6a936c9199d6..67cbcb2d0c7f 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1335,6 +1335,10 @@  END_FTR_SECTION_IFSET(CPU_FTR_HVMODE)
 	andc	r10,r10,r3
 	mtmsrd	r10
 
+	lhz	r12,PACA_IN_MCE(r13)
+	subi	r12,r12,1
+	sth	r12,PACA_IN_MCE(r13)
+
 	/* Invoke machine_check_exception to print MCE event and panic. */
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	machine_check_exception