From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57775) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aalyp-0006kf-6v for qemu-devel@nongnu.org; Tue, 01 Mar 2016 10:12:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aalym-0000fG-2I for qemu-devel@nongnu.org; Tue, 01 Mar 2016 10:12:55 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43400) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aalyl-0000fB-T6 for qemu-devel@nongnu.org; Tue, 01 Mar 2016 10:12:51 -0500 References: <56D36B83.7000404@reactos.org> From: Paolo Bonzini Message-ID: <56D5B170.9060006@redhat.com> Date: Tue, 1 Mar 2016 16:12:48 +0100 MIME-Version: 1.0 In-Reply-To: <56D36B83.7000404@reactos.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [QEMU] Windows XP / Windows 95 / MS-DOS 6 regressions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?UTF-8?Q?Herv=c3=a9_Poussineau?= , Richard Henderson , qemu-devel On 28/02/2016 22:49, Herv=C3=A9 Poussineau wrote: >=20 > 3) MS-DOS 6 freezes when loading himem.sys since commit: > commit 1906b2af7c2345037d9b2fdf484b457b5acd09d1 > Author: Richard Henderson > Date: Thu Jul 2 13:59:21 2015 +0100 >=20 > target-i386: Rearrange processing of 0F 01 >=20 > 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. >=20 > Signed-off-by: Richard Henderson >=20 > 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". Paolo