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From: Avi Kivity <avi@redhat.com>
To: "Kevin O'Connor" <kevin@koconnor.net>,
	"seabios@seabios.org" <seabios@seabios.org>,
	KVM list <kvm@vger.kernel.org>
Subject: Re: seabios 0.6.1 regression
Date: Mon, 15 Nov 2010 17:41:07 +0200	[thread overview]
Message-ID: <4CE15493.7070907@redhat.com> (raw)
In-Reply-To: <4CE15307.40801@redhat.com>

On 11/15/2010 05:34 PM, Avi Kivity wrote:
> On 11/15/2010 05:12 PM, Avi Kivity wrote:
>>
>> That was premature, the real culprit (if I didn't mess up the bisect) 
>> is:
>>
>> commit 6039fc55274deb7202060d08e0f23b9f3dcface4
>> Author: Kevin O'Connor <kevin@koconnor.net>
>> Date:   Wed Aug 25 21:43:19 2010 -0400
>>
>>     Update qemu_cfg_read to use "rep insb".
>>
>>     Use rep insb instead of manual loop - the host may be able to 
>> optimize
>>     the rep insb instruction.
>>
>> Which doesn't make any sense - will do more testing.
>>
>
> Confirmed with multiple tests.
>

I think it's a miscompile.

out/code16.o:
  1a4:   3e                      ds
  1a5:   6c                      insb   (%dx),%es:(%edi)

Note no 66 prefix.

-- 
error compiling committee.c: too many arguments to function


  reply	other threads:[~2010-11-15 15:41 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-15 13:39 seabios 0.6.1 regression Avi Kivity
2010-11-15 15:04 ` Avi Kivity
2010-11-15 15:12   ` Avi Kivity
2010-11-15 15:34     ` Avi Kivity
2010-11-15 15:41       ` Avi Kivity [this message]
2010-11-15 15:49         ` Avi Kivity
2010-11-15 16:09           ` Avi Kivity
2010-11-16  0:18             ` Kevin O'Connor
2010-11-16  9:05               ` Avi Kivity
2010-11-16 10:47             ` Avi Kivity
2010-11-16 13:19               ` Alexander Graf
2010-11-16 14:15                 ` Avi Kivity
2010-11-16 14:17                   ` Alexander Graf
2010-11-16 14:27                     ` Avi Kivity

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