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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH -V2 02/26] powerpc: Save DAR and DSISR in pt_regs on MCE
Date: Wed,  6 Mar 2013 11:40:03 +0530	[thread overview]
Message-ID: <1362550227-575-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1362550227-575-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>

From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>

We were not saving DAR and DSISR on MCE. Save then and also print the values
along with exception details in xmon.

Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/exceptions-64s.S |    9 +++++++++
 arch/powerpc/xmon/xmon.c             |    2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 0e9c48c..d02e730 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -640,9 +640,18 @@ slb_miss_user_pseries:
 	.align	7
 	.globl machine_check_common
 machine_check_common:
+
+	mfspr	r10,SPRN_DAR
+	std	r10,PACA_EXGEN+EX_DAR(r13)
+	mfspr	r10,SPRN_DSISR
+	stw	r10,PACA_EXGEN+EX_DSISR(r13)
 	EXCEPTION_PROLOG_COMMON(0x200, PACA_EXMC)
 	FINISH_NAP
 	DISABLE_INTS
+	ld	r3,PACA_EXGEN+EX_DAR(r13)
+	lwz	r4,PACA_EXGEN+EX_DSISR(r13)
+	std	r3,_DAR(r1)
+	std	r4,_DSISR(r1)
 	bl	.save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	.machine_check_exception
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 1f8d2f1..a72e490 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -1423,7 +1423,7 @@ static void excprint(struct pt_regs *fp)
 	printf("    sp: %lx\n", fp->gpr[1]);
 	printf("   msr: %lx\n", fp->msr);
 
-	if (trap == 0x300 || trap == 0x380 || trap == 0x600) {
+	if (trap == 0x300 || trap == 0x380 || trap == 0x600 || trap == 0x200) {
 		printf("   dar: %lx\n", fp->dar);
 		if (trap != 0x380)
 			printf(" dsisr: %lx\n", fp->dsisr);
-- 
1.7.10

  parent reply	other threads:[~2013-03-06  6:10 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-06  6:10 [PATCH -V2 00/26]T HP support for PPC64 Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 01/26] powerpc: Use signed formatting when printing error Aneesh Kumar K.V
2013-03-06  6:10 ` Aneesh Kumar K.V [this message]
2013-03-06  6:10 ` [PATCH -V2 03/26] powerpc: Don't hard code the size of pte page Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 04/26] powerpc: Reduce the PTE_INDEX_SIZE Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 05/26] powerpc: Move the pte free routines from common header Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 06/26] powerpc: Reduce PTE table memory wastage Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 07/26] powerpc: Add size argument to pgtable_cache_add Aneesh Kumar K.V
2013-03-13  2:47   ` Paul Mackerras
2013-03-13  9:25     ` Aneesh Kumar K.V
2013-03-13 11:34       ` Paul Mackerras
2013-03-06  6:10 ` [PATCH -V2 08/26] powerpc: Clarify __pgtable_cache_add by renaming shift to index Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 09/26] powerpc: Use encode avpn where we need only avpn values Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 10/26] powerpc: Decode the pte-lp-encoding bits correctly Aneesh Kumar K.V
2013-03-13  4:09   ` Paul Mackerras
2013-03-06  6:10 ` [PATCH -V2 11/26] powerpc: Fix hpte_decode to use the correct decoding for page sizes Aneesh Kumar K.V
2013-03-13  2:56   ` Paul Mackerras
2013-03-06  6:10 ` [PATCH -V2 12/26] powerpc: Return all the valid pte ecndoing in KVM_PPC_GET_SMMU_INFO ioctl Aneesh Kumar K.V
2013-03-13  4:11   ` Paul Mackerras
2013-03-06  6:10 ` [PATCH -V2 13/26] powerpc: Update tlbie/tlbiel as per ISA doc Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 14/26] powerpc: print both base and actual page size on hash failure Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 15/26] powerpc: Print page size info during boot Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 16/26] mm/THP: HPAGE_SHIFT is not a #define on some arch Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 17/26] mm/THP: Add pmd args to pgtable deposit and withdraw APIs Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 18/26] mm/THP: withdraw the pgtable after pmdp related operations Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 19/26] powerpc/THP: Implement transparent huge pages for ppc64 Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 20/26] powerpc/THP: Differentiate THP PMD entries from HUGETLB PMD entries Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 21/26] powerpc/THP: Add code to handle HPTE faults for large pages Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 22/26] powerpc: Handle huge page in perf callchain Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 23/26] powerpc/THP: hypervisor require few WIMG bit set Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 24/26] powerpc/THP: get_user_pages_fast changes Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 25/26] powerpc/THP: Enable THP on PPC64 Aneesh Kumar K.V
2013-03-06  6:10 ` [PATCH -V2 26/26] powerpc: Optimize hugepage invalidate Aneesh Kumar K.V

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