From: Mahesh J Salgaonkar <mahesh@linux.vnet.ibm.com>
To: linuxppc-dev <linuxppc-dev@ozlabs.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeremy Kerr <jeremy.kerr@au1.ibm.com>,
Paul Mackerras <paulus@samba.org>,
Anton Blanchard <anton@samba.org>
Subject: [RFC PATCH 0/9] Machine check handling in linux host.
Date: Wed, 07 Aug 2013 15:07:58 +0530 [thread overview]
Message-ID: <20130807093609.5389.26534.stgit@mars.in.ibm.com> (raw)
Hi,
Please find the patch set that performs the machine check handling inside linux
host. The design is to be able to handle re-entrancy so that we do not clobber
the machine check information during nested machine check interrupt.
The patch 2 implements the logic to save the raw MCE info onto the emergency
stack and prepares to take another exception. Patch 3 and 4 adds CPU-side hooks
for early machine check handler and TLB flush. The patch 5 and 6 is
responsible to detect SLB/TLB errors and flush them off in the real mode. The
patch 7 implements the logic to decode and save high level MCE information to
per cpu buffer without clobbering. The patch 9 adds the basic error handling to
the high level C code with MMU on.
I have tested SLB multihit scenario on powernv. For TLB multihit and nested
machine check testing, I am still working on getting cronus setup to be able
to inject errors.
Please review and let me know your comments.
Thanks,
-Mahesh.
---
Mahesh Salgaonkar (9):
powerpc: Split the common exception prolog logic into two section.
powerpc: handle machine check in Linux host.
powerpc: Introduce a early machine check hook in cpu_spec.
powerpc: Add flush_tlb operation in cpu_spec.
powerpc: Flush SLB/TLBs if we get SLB/TLB machine check errors on power7.
powerpc: Flush SLB/TLBs if we get SLB/TLB machine check errors on power8.
powerpc: Decode and save machine check event.
powerpc/powernv: Remove machine check handling in OPAL.
powerpc/powernv: Machine check exception handling.
arch/powerpc/include/asm/bitops.h | 5 +
arch/powerpc/include/asm/cputable.h | 12 +
arch/powerpc/include/asm/exception-64s.h | 110 ++++++++---
arch/powerpc/include/asm/mce.h | 190 ++++++++++++++++++++
arch/powerpc/kernel/Makefile | 3
arch/powerpc/kernel/cpu_setup_power.S | 39 +++-
arch/powerpc/kernel/cputable.c | 16 ++
arch/powerpc/kernel/exceptions-64s.S | 50 +++++
arch/powerpc/kernel/mce.c | 179 +++++++++++++++++++
arch/powerpc/kernel/mce_power.c | 287 ++++++++++++++++++++++++++++++
arch/powerpc/kernel/traps.c | 15 ++
arch/powerpc/kvm/book3s_hv_ras.c | 42 +---
arch/powerpc/platforms/powernv/opal.c | 84 ++++++---
13 files changed, 935 insertions(+), 97 deletions(-)
create mode 100644 arch/powerpc/include/asm/mce.h
create mode 100644 arch/powerpc/kernel/mce.c
create mode 100644 arch/powerpc/kernel/mce_power.c
--
-Mahesh
next reply other threads:[~2013-08-07 9:40 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 9:37 Mahesh J Salgaonkar [this message]
2013-08-07 9:38 ` [RFC PATCH 1/9] powerpc: Split the common exception prolog logic into two section Mahesh J Salgaonkar
2013-08-08 4:10 ` Anshuman Khandual
2013-08-08 4:16 ` Benjamin Herrenschmidt
2013-08-07 9:38 ` [RFC PATCH 2/9] powerpc: handle machine check in Linux host Mahesh J Salgaonkar
2013-08-08 4:51 ` Paul Mackerras
2013-08-08 13:19 ` Mahesh Jagannath Salgaonkar
2013-08-08 13:33 ` Benjamin Herrenschmidt
2013-08-08 5:01 ` Anshuman Khandual
2013-08-07 9:38 ` [RFC PATCH 3/9] powerpc: Introduce a early machine check hook in cpu_spec Mahesh J Salgaonkar
2013-08-07 9:38 ` [RFC PATCH 4/9] powerpc: Add flush_tlb operation " Mahesh J Salgaonkar
2013-08-07 9:38 ` [RFC PATCH 5/9] powerpc: Flush SLB/TLBs if we get SLB/TLB machine check errors on power7 Mahesh J Salgaonkar
2013-08-08 4:58 ` Paul Mackerras
2013-08-07 9:39 ` [RFC PATCH 6/9] powerpc: Flush SLB/TLBs if we get SLB/TLB machine check errors on power8 Mahesh J Salgaonkar
2013-08-07 9:39 ` [RFC PATCH 7/9] powerpc: Decode and save machine check event Mahesh J Salgaonkar
2013-08-07 18:41 ` Scott Wood
2013-08-08 3:40 ` Mahesh Jagannath Salgaonkar
2013-08-08 5:14 ` Paul Mackerras
2013-08-08 13:19 ` Mahesh Jagannath Salgaonkar
2013-08-08 13:33 ` Benjamin Herrenschmidt
2013-08-07 9:39 ` [RFC PATCH 8/9] powerpc/powernv: Remove machine check handling in OPAL Mahesh J Salgaonkar
2013-08-07 9:39 ` [RFC PATCH 9/9] powerpc/powernv: Machine check exception handling Mahesh J Salgaonkar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130807093609.5389.26534.stgit@mars.in.ibm.com \
--to=mahesh@linux.vnet.ibm.com \
--cc=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=jeremy.kerr@au1.ibm.com \
--cc=linuxppc-dev@ozlabs.org \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).