From: Joerg Roedel <joro@8bytes.org>
To: Tony Luck <tony.luck@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Borislav Petkov <bp@amd64.org>, Ingo Molnar <mingo@elte.hu>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Huang, Ying" <ying.huang@intel.com>,
Andi Kleen <andi@firstfloor.org>, Borislav Petkov <bp@alien8.de>,
Andrew Morton <akpm@linux-foundation.org>,
Mauro Carvalho Chehab <mchehab@redhat.com>
Subject: Re: [RFC 0/9] mce recovery for Sandy Bridge server
Date: Wed, 25 May 2011 12:02:01 +0200 [thread overview]
Message-ID: <20110525100201.GL23407@8bytes.org> (raw)
In-Reply-To: <BANLkTi=Mz7SoXz5zk-p-+FYBKC6aSWtgtg@mail.gmail.com>
On Tue, May 24, 2011 at 02:48:30PM -0700, Tony Luck wrote:
> But the case when I'd want to do the "stop this task" thing is when I
> think that I can recover - for memory errors detected while in kernel
> code I expect this will only ever be a few special cases:
> 1) copy to/from user
> 2) copy page (for copy-on-write fault)
> 3) ...
> and in these cases we don't have interrupts disabled. In fact I have
> difficulty imagining a scenario where the kernel trips over a memory
> error in interrupt disabled code that would ever be recoverable.
Perf itself has a copy_from_user_nmi which is used to collect stack
traces. But those non-preemptible user accesses can be moved out of
your special cases.
Joerg
next prev parent reply other threads:[~2011-05-25 10:02 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 21:54 [RFC 0/9] mce recovery for Sandy Bridge server Luck, Tony
2011-05-23 22:02 ` [RFC 1/9] mce: fixes for mce severity table Luck, Tony
2011-05-23 22:12 ` [RFC 2/9] mce: save most severe error information Luck, Tony
2011-05-23 22:13 ` [RFC 3/9] MCE: Always retrieve mce rip before calling no_way_out Luck, Tony
2011-05-23 22:13 ` [RFC 4/9] MCE: Move ADDR/MISC reading code into common function Luck, Tony
2011-05-23 22:13 ` [RFC 5/9] MCE: Mask out address mask bits below address granuality Luck, Tony
2011-05-23 22:14 ` [RFC 6/9] HWPOISON: Handle hwpoison in current process Luck, Tony
2011-05-23 22:14 ` [RFC 7/9] MCE: Pass registers to work handlers Luck, Tony
2011-05-23 22:14 ` [RFC 8/9] mce: run through processors with more severe problems first Luck, Tony
2011-05-23 22:15 ` [RFC 9/9] MCE: Add Action-Required support Luck, Tony
2011-05-24 3:40 ` [RFC 0/9] mce recovery for Sandy Bridge server Ingo Molnar
2011-05-24 8:14 ` Borislav Petkov
2011-05-24 16:57 ` Luck, Tony
2011-05-24 17:33 ` Borislav Petkov
2011-05-24 17:56 ` Tony Luck
2011-05-24 21:04 ` Borislav Petkov
2011-05-24 21:24 ` Peter Zijlstra
2011-05-24 21:30 ` Linus Torvalds
2011-05-24 21:37 ` Peter Zijlstra
2011-05-24 21:41 ` Ingo Molnar
2011-05-24 21:48 ` Tony Luck
2011-05-25 10:02 ` Joerg Roedel [this message]
2011-05-25 13:44 ` Ingo Molnar
2011-05-25 21:43 ` Tony Luck
2011-05-25 21:47 ` Ingo Molnar
2011-05-25 23:53 ` Tony Luck
2011-05-26 20:16 ` Tony Luck
2011-05-25 6:03 ` Hidetoshi Seto
2011-05-25 16:44 ` Luck, Tony
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=20110525100201.GL23407@8bytes.org \
--to=joro@8bytes.org \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=bp@alien8.de \
--cc=bp@amd64.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mchehab@redhat.com \
--cc=mingo@elte.hu \
--cc=tony.luck@gmail.com \
--cc=torvalds@linux-foundation.org \
--cc=ying.huang@intel.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.