linux-kernel - Re: [PATCH] [3/4] x86: MCE: Improve mce_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090410082545.GP14687@one.firstfloor.org>
Date:	Fri, 10 Apr 2009 10:25:45 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Cc:	Andi Kleen <andi@...stfloor.org>, ying.huang@...el.com,
	hpa@...or.com, linux-kernel@...r.kernel.org, mingo@...e.hu,
	tglx@...utronix.de
Subject: Re: [PATCH] [3/4] x86: MCE: Improve mce_get_rip

On Fri, Apr 10, 2009 at 01:38:07PM +0900, Hidetoshi Seto wrote:
> Andi Kleen wrote:
> >> Following is a proposal version. Maybe dividing it into 2 pieces, function
> >> improvement and MSR definition, would be a good idea.
> > 
> > I don't think we need the full MSR definitions right now, at least 
> > I don't have any plans to support them. After all current CPUs
> > don't.
> > 
> > The rest looks good.
> 
> Thanks.
> 
> I still believe that using MSR which only available on 32bit from 64bit

The MSR is available on 64bit too (there are 64bit capable P4s
like Prescott or Smithfield) 

> code is not right thing.  However this is not logical bug, and adding
> definition is not suitable for 2.6.30.  I'd like to defer the MSR part
> to the next time.
> 
> BTW, since this patch is "Improve", I think you need to clarify why you
> bind it into the "bugfix" patch set for 2.6.30.  If there are known bug,
> please describe about it.

It reports the incorrect RIP, fixing one of the test cases in the 
MCE regression test suite.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/