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Date: Sun, 8 Nov 2009 21:39:06 -0500
Message-ID: <55e03a0a0911081839h335e6ceeg977faef9c5e26a30@mail.gmail.com>
Subject: 2.6.32-rc6-git3 paravirt compile problems
From: Alex <mysqlstudent@gmail.com>
To: kvm@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>
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Hi,

I'm using glibc-2.6.3, gcc-3.4.4 and having problems compiling
2.6.32-rc6-git3 when selecting CONFIG_PARAVIRT_GUEST. This affects
both XEN and KVM options, or each indivdually.

  CC      init/main.o
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h: In
function `start_kernel':
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:853:
warning: asm operand 2 probably doesn't match constraints
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:853:
warning: asm operand 2 probably doesn't match constraints
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:858:
warning: asm operand 2 probably doesn't match constraints
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:853:
error: impossible constraint in `asm'
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:853:
error: impossible constraint in `asm'
/usr/src/linux-2.6.32-rc6-git3/arch/x86/include/asm/paravirt.h:858:
error: impossible constraint in `asm'
make[1]: *** [init/main.o] Error 1
make: *** [init] Error 2

I've seen many references to this same error with older versions of
gcc going back quite a bit. Am I doing something wrong, or has this
problem not yet been addressed?

Is there something I can do to properly configure KVM on later kernels
with gcc-3.4.4, or would I be advised to upgrade?

Thanks,
Alex