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Message-ID: <4B72FD09.1020202@goop.org>
Date:	Wed, 10 Feb 2010 10:38:01 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Jan Engelhardt <jengelh@...ozas.de>
CC:	Jeremy Fitzhardinge <jeremy@...source.com>,
	virtualization@...ts.osdl.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: Paravirt compile failure with gcc33

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@...ts.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/virtualization
>
>    

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