linux-kernel - Paravirt compile failure with gcc33

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Date:	Wed, 10 Feb 2010 19:13:24 +0100 (CET)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Jeremy Fitzhardinge <jeremy@...source.com>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	virtualization@...ts.osdl.org
Subject: Paravirt compile failure with gcc33

Hi,


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:


[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.
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