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

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Message-ID: <20090409071413.GD14687@one.firstfloor.org>
Date:	Thu, 9 Apr 2009 09:14:13 +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 Thu, Apr 09, 2009 at 01:59:32PM +0900, Hidetoshi Seto wrote:
> >> I guess it would make much sense if we stop mixing RIP and EIP and rename
> >> the mce_get_rip() to mce_get_eip(), and the rip_msr to eip_msr too.
> > 
> > Ok fair enough.  I admit the code was always a bit dubious.
> > 
> >> And then it would be acceptable if we print RIP with "!INEXACT!" annotation
> >> instead of printing precise EIP in case of RIPV=0 but EIPV=1.
> > 
> > Please send a patch to do all that.
> 
> I will.
> 
> A trivial question is if you unified 32/64bit mce codes, would you
> like to print only "IP %02x:<%016Lx>", or "RIP ..." and "EIP ..." ?

I would prefer to pt in RIP in both cases, simply because i fear breaking
parsers. I think the 32bit users will survive if their instruction
pointer is reported as "RIP" too.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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