From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:42924)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <hpoussin@reactos.org>) id 1aaqVt-0002qB-MC
	for qemu-devel@nongnu.org; Tue, 01 Mar 2016 15:03:25 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <hpoussin@reactos.org>) id 1aaqVp-0000xG-LJ
	for qemu-devel@nongnu.org; Tue, 01 Mar 2016 15:03:21 -0500
Received: from smtp2-g21.free.fr ([212.27.42.2]:6041)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <hpoussin@reactos.org>) id 1aaqVp-0000x1-EJ
	for qemu-devel@nongnu.org; Tue, 01 Mar 2016 15:03:17 -0500
References: <56D36B83.7000404@reactos.org> <56D5B170.9060006@redhat.com>
From: =?UTF-8?Q?Herv=c3=a9_Poussineau?= <hpoussin@reactos.org>
Message-ID: <56D5F580.1070901@reactos.org>
Date: Tue, 1 Mar 2016 21:03:12 +0100
MIME-Version: 1.0
In-Reply-To: <56D5B170.9060006@redhat.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: quoted-printable
Subject: Re: [Qemu-devel] [QEMU] Windows XP / Windows 95 / MS-DOS 6
	regressions
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <rth@twiddle.net>, qemu-devel <qemu-devel@nongnu.org>

Le 01/03/2016 16:12, Paolo Bonzini a =C3=A9crit :
>
>
> On 28/02/2016 22:49, Herv=C3=A9 Poussineau wrote:
>>
>> 3) MS-DOS 6 freezes when loading himem.sys since commit:
>> commit 1906b2af7c2345037d9b2fdf484b457b5acd09d1
>> Author: Richard Henderson <rth@twiddle.net>
>> Date: Thu Jul 2 13:59:21 2015 +0100
>>
>>      target-i386: Rearrange processing of 0F 01
>>
>>      Rather than nesting tests of OP, MOD, and RM, decode them
>>      all at once with a switch. Fixes incorrect decoding of
>>      AMD Pacifica extensions (aka vmrun et al) via op=3D=3D2 path.
>>
>>      Signed-off-by: Richard Henderson <rth@twiddle.net>
>>
>> I'm starting QEMU with -cpu 486.
>> It works on master if I add -enable-kvm
>
> Please test the other patch I've just sent.  I have not looked at 2,
> but that patch seems to fix the Windows 98 setup CD for me besides
> fixing the problem with this commit.
>
> If it's not enough for your Windows 95 testcase, please try getting a
> trace with "-d in_asm,op_opt,int".

Windows 95 still doesn't work, even with your two patches applied.

The message is:

"A fatal exception 0E has occurred at 0137:FD512607. The current
application will be terminated.

* Press any key to terminate the current application.
* Press CTRL-ALT-DEL to restart your computer. You will
   lose any unsaved information in all applications.

Press any key to continue."

I can provide debug log by email if required.

I also tested Windows 98. The first part setup correctly work, but doesn'=
t work just after the reboot (for the first boot).
The message is very similar to Windows 95.

Herv=C3=A9