linux-kernel - Re: [PATCH 0/14] KVM: Kernel-based Virtual Machine (v4)

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Message-Id: <1162978754.3138.266.camel@laptopd505.fenrus.org>
Date:	Wed, 08 Nov 2006 10:39:14 +0100
From:	Arjan van de Ven <arjan@...radead.org>
To:	Avi Kivity <avi@...ranet.com>
Cc:	Andrew Morton <akpm@...l.org>, Roland Dreier <rdreier@...co.com>,
	kvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/14] KVM: Kernel-based Virtual Machine (v4)


> 
> > Would
> > really prefer something at Kconfig-time, but we have no way of letting the
> > assembler version feed into the Kconfig system (nor do we want it, I
> > suspect).
> >   
> 
> config AS_VERSION
>         eval as --version | awk '{ ... }'


config time is not possible (not to mention it's not that uncommon to
config on a different box than you compile). Makefile side is not that
hard; in fact what you'd need is a very small check similar to
scripts/gcc-x86_64-has-stack-protector.sh . While that checks a gcc
feature, checking the VMX operations via a C program with inline asm is
actually the most realistic test ANYWAY ...



-- 
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
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