From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-patches-return-112132-listarch-gdb-patches=sources.redhat.com@sourceware.org>
Received: (qmail 25875 invoked by alias); 29 Apr 2014 17:05:37 -0000
Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-patches.sourceware.org>
List-Subscribe: <mailto:gdb-patches-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-patches-owner@sourceware.org
Received: (qmail 25865 invoked by uid 89); 29 Apr 2014 17:05:37 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-2.1 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2
X-HELO: mx1.redhat.com
Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 29 Apr 2014 17:05:36 +0000
Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22])	by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s3TH5WKH012749	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);	Tue, 29 Apr 2014 13:05:32 -0400
Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11])	by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s3TH5Ubr026603;	Tue, 29 Apr 2014 13:05:30 -0400
Message-ID: <535FDBD9.9040803@redhat.com>
Date: Tue, 29 Apr 2014 17:05:00 -0000
From: Pedro Alves <palves@redhat.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7
MIME-Version: 1.0
To: Hui Zhu <teawater@gmail.com>
CC: Mark Kettenis <mark.kettenis@xs4all.nl>, Hui Zhu <hui_zhu@mentor.com>,        gdb-patches ml <gdb-patches@sourceware.org>
Subject: Re: [PATCH] Fix interrupt.exp fails with m32 in x86_64
References: <53554475.3010201@mentor.com> <201404211827.s3LIRL6a007871@glazunov.sibelius.xs4all.nl> <CANFwon2cqqDPTg5hAUzHt0iCEjp8RrJxQf1ETouDU0EKfH+XKQ@mail.gmail.com>
In-Reply-To: <CANFwon2cqqDPTg5hAUzHt0iCEjp8RrJxQf1ETouDU0EKfH+XKQ@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-SW-Source: 2014-04/txt/msg00622.txt.bz2

On 04/29/2014 04:56 PM, Hui Zhu wrote:
> I am sorry that the root cause of issue has something wrong.
> The right root cause is:
> When inferior call 32 bits syscall "read", Linux kernel function
> "ia32_cstar_target" will set TS_COMPAT to current_thread_info->status.

Thanks a lot of tracking this stuff down.  I appreciate the effort.

It'd be great if we got an ack on the kernel side on what's
going on before we considered working around it in GDB.

Thanks,
-- 
Pedro Alves