From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Paravirt compile failure with gcc33 Date: Wed, 10 Feb 2010 10:38:01 -0800 Message-ID: <4B72FD09.1020202@goop.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Jan Engelhardt Cc: virtualization@lists.osdl.org, "H. Peter Anvin" , Linux Kernel Mailing List List-Id: virtualization@lists.linuxfoundation.org On 02/10/2010 10:13 AM, Jan Engelhardt wrote: > As I was compile-testing 2.6.33-rc with gcc-3.3, > binutils-2.19.51-10.26.4.x86_64, I observed a failure when > CONFIG_PARAVIRT is turned on: > Yeah, there's a gcc bug of some kind there, and its very hard to see how to work around it. When we last discussed this, I think we were close to deciding to obsolete gcc 3.3. HPA, do you remember? J > > [any file] > /home/jengelh/code/linux/arch/x86/include/asm/paravirt.h: In function > `rif_seq_stop': > /home/jengelh/code/linux/arch/x86/include/asm/paravirt.h:763: warning: > asm operand 5 probably doesn't match constraints > /home/jengelh/code/linux/arch/x86/include/asm/paravirt.h:858: warning: > asm operand 2 probably doesn't match constraints > /home/jengelh/code/linux/arch/x86/include/asm/paravirt.h:763: error: > impossible constraint in `asm' > /home/jengelh/code/linux/arch/x86/include/asm/paravirt.h:858: error: > impossible constraint in `asm' > > Disabling either PARAVIRT or using GCC4.x works around this. > _______________________________________________ > Virtualization mailing list > Virtualization@lists.linux-foundation.org > https://lists.linux-foundation.org/mailman/listinfo/virtualization > >