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, linux-mm@kvack.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [RFC PATCH -V2 02/21] powerpc: Save DAR and DSISR in pt_regs on MCE
Date: Thu, 21 Feb 2013 22:17:09 +0530 [thread overview]
Message-ID: <1361465248-10867-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1361465248-10867-1-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.
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
--
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next prev parent reply other threads:[~2013-02-21 16:47 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-21 16:47 [RFC PATCH -V2 00/21] THP support for PPC64 Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 01/21] powerpc: Use signed formatting when printing error Aneesh Kumar K.V
2013-02-22 5:00 ` Paul Mackerras
2013-02-21 16:47 ` Aneesh Kumar K.V [this message]
2013-02-22 5:03 ` [RFC PATCH -V2 02/21] powerpc: Save DAR and DSISR in pt_regs on MCE Paul Mackerras
2013-02-21 16:47 ` [RFC PATCH -V2 03/21] powerpc: Don't hard code the size of pte page Aneesh Kumar K.V
2013-02-22 5:06 ` Paul Mackerras
2013-02-23 16:17 ` Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 04/21] powerpc: Reduce the PTE_INDEX_SIZE Aneesh Kumar K.V
2013-02-22 5:07 ` Paul Mackerras
2013-02-21 16:47 ` [RFC PATCH -V2 05/21] powerpc: Reduce PTE table memory wastage Aneesh Kumar K.V
2013-02-22 0:32 ` David Gibson
2013-02-22 5:14 ` Aneesh Kumar K.V
2013-02-22 5:23 ` Paul Mackerras
2013-02-22 17:20 ` Aneesh Kumar K.V
2013-02-23 16:38 ` Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 06/21] powerpc: Add size argument to pgtable_cache_add Aneesh Kumar K.V
2013-02-22 5:27 ` Paul Mackerras
2013-02-21 16:47 ` [RFC PATCH -V2 07/21] powerpc: Use encode avpn where we need only avpn values Aneesh Kumar K.V
2013-02-22 5:28 ` Paul Mackerras
2013-02-21 16:47 ` [RFC PATCH -V2 08/21] powerpc: Decode the pte-lp-encoding bits correctly Aneesh Kumar K.V
2013-02-22 5:37 ` Paul Mackerras
2013-02-24 16:51 ` Aneesh Kumar K.V
2013-02-24 17:45 ` Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 09/21] powerpc: Update tlbie/tlbiel as per ISA doc Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 10/21] powerpc: print both base and actual page size on hash failure Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 11/21] powerpc: Print page size info during boot Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 12/21] powerpc: Fix hpte_decode to use the correct decoding for page sizes Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 13/21] mm/THP: HPAGE_SHIFT is not a #define on some arch Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 14/21] mm/THP: Add pmd args to pgtable deposit and withdraw APIs Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 15/21] mm/THP: support for zerout withdraw Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 16/21] powerpc/THP: Implement transparent huge pages for ppc64 Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 17/21] powerpc/THP: Differentiate THP PMD entries from HUGETLB PMD entries Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 18/21] powerpc/THP: Add code to handle HPTE faults for large pages Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 19/21] powerpc/THP: hypervisor require few WIMG bit set Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 20/21] powerpc/THP: get_user_pages_fast changes Aneesh Kumar K.V
2013-02-21 16:47 ` [RFC PATCH -V2 21/21] powerpc/THP: Enable THP on PPC64 Aneesh Kumar K.V
2013-03-21 8:17 ` [RFC PATCH -V2 00/21] THP support for PPC64 Simon Jeons
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