From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: [PATCH 4/4] xen/arm: correctly handle an empty
 array of platform descs.
Date: Tue, 14 May 2013 15:56:56 +0100
Message-ID: <1368543416.14264.42.camel@zakaz.uk.xensource.com>
References: <1368462160.537.125.camel@zakaz.uk.xensource.com>
	<1368462182-10317-4-git-send-email-ian.campbell@citrix.com>
	<alpine.DEB.2.02.1305131748510.4799@kaball.uk.xensource.com>
	<1368523975.14264.22.camel@zakaz.uk.xensource.com>
	<5192248402000078000D5E7F@nat28.tlf.novell.com>
	<1368526880.14264.29.camel@zakaz.uk.xensource.com>
	<5192666A02000078000D60F8@nat28.tlf.novell.com>
	<1368543272.14264.41.camel@zakaz.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <1368543272.14264.41.camel@zakaz.uk.xensource.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Jan Beulich <JBeulich@suse.com>
Cc: "Keir (Xen.org)" <keir@xen.org>, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>, Ian Jackson <Ian.Jackson@eu.citrix.com>, "Tim (Xen.org)" <tim@xen.org>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Julien Grall <julien.grall@citrix.com>
List-Id: xen-devel@lists.xenproject.org

On Tue, 2013-05-14 at 15:54 +0100, Ian Campbell wrote:
> > What compiler version and switches were you using for the case
> > where you spotted bad code to be generated?
> 
> gcc-linaro-aarch64-linux-gnu-4.7-2013.01-20130125_linux doing a standard
> arm64 build of Xen.

Flags:

aarch64-linux-gnu-gcc -O1 -fno-omit-frame-pointer  -g
-fno-strict-aliasing -std=gnu99 -Wall -Wstrict-prototypes
-Wdeclaration-after-statement -Wno-unused-but-set-variable
-Wno-unused-local-typedefs   -fno-builtin -fno-common -Wredundant-decls
-iwithprefix include -Werror -Wno-pointer-arith -pipe
-I/local/scratch/ianc/devel/arm/xen.git/xen/include -fno-stack-protector
-fno-exceptions -Wnested-externs -mcpu=generic
-DGCC_HAS_VISIBILITY_ATTRIBUTE -fno-optimize-sibling-calls
-DEARLY_PRINTK -DEARLY_PRINTK_INC=\"debug-pl011.inc\" -g -D__XEN__
-include /local/scratch/ianc/devel/arm/xen.git/xen/include/xen/config.h
-DVERBOSE -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER -MMD
-MF .platform.o.d -c platform.c -o platform.o

Interestingly that includes -fno-strict-aliasing, which comes from the
top-level Config.mk