From: Borislav Petkov <bp@alien8.de>
To: Tony Luck <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Elliott@pd.tnic, Robert <elliott@hpe.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-nvdimm@ml01.01.org, x86@kernel.org
Subject: Re: [PATCHV3 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas
Date: Tue, 22 Dec 2015 12:14:01 +0100 [thread overview]
Message-ID: <20151222111401.GD3728@pd.tnic> (raw)
In-Reply-To: <e5547404ebab8f1f6c04c371bbb33109acc9534b.1450283985.git.tony.luck@intel.com>
On Tue, Dec 15, 2015 at 05:29:59PM -0800, Tony Luck wrote:
> Extend the severity checking code to add a new context IN_KERN_RECOV
> which is used to indicate that the machine check was triggered by code
> in the kernel with a fixup entry.
>
> Add code to check for this situation and respond by altering the return
> IP to the fixup address.
>
> Major re-work to the tail code in do_machine_check() to make all this
> readable/maintainable. One functional change is that tolerant=3 no longer
> stops recovery actions. Revert to only skipping sending SIGBUS to the
> current process.
>
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---
> arch/x86/kernel/cpu/mcheck/mce-severity.c | 21 +++++++++-
> arch/x86/kernel/cpu/mcheck/mce.c | 70 ++++++++++++++++---------------
> 2 files changed, 55 insertions(+), 36 deletions(-)
Reviewed-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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next prev parent reply other threads:[~2015-12-22 11:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-16 16:39 [PATCHV3 0/3] Machine check recovery when kernel accesses poison Tony Luck
2015-12-16 1:29 ` [PATCHV3 1/3] x86, ras: Add new infrastructure for machine check fixup tables Tony Luck
2015-12-16 17:55 ` Andy Lutomirski
2015-12-16 22:51 ` Luck, Tony
2015-12-17 16:22 ` Andy Lutomirski
2015-12-21 18:18 ` Borislav Petkov
2015-12-21 19:16 ` Dan Williams
2015-12-21 20:15 ` Borislav Petkov
2015-12-22 11:13 ` Borislav Petkov
2015-12-16 1:29 ` [PATCHV3 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas Tony Luck
2015-12-22 11:14 ` Borislav Petkov [this message]
2015-12-16 1:30 ` [PATCHV3 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks Tony Luck
2015-12-22 11:13 ` Borislav Petkov
2015-12-22 19:38 ` Tony Luck
2015-12-23 12:58 ` Borislav Petkov
2015-12-23 19:31 ` Dan Williams
2015-12-23 20:46 ` Tony Luck
2015-12-24 13:37 ` Borislav Petkov
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