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Date: Tue, 01 May 2012 15:56:21 +0300 From: Avi Kivity <avi@...hat.com> To: Anthony Liguori <anthony@...emonkey.ws> CC: "Michael S. Tsirkin" <mst@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, davej@...hat.com Subject: Re: [PATCH] kvm: fix cpuid eax On 05/01/2012 03:53 PM, Avi Kivity wrote: > On 04/30/2012 11:37 PM, Anthony Liguori wrote: > > On 04/30/2012 09:39 AM, Michael S. Tsirkin wrote: > >> cpuid eax should return the max leaf so that > >> guests can find out the valid range. > >> This matches Xen et al. > > > > What KVM does here predates Xen and Hyper-V. > > > > This is an ABI breaker. > > First, I don't think we ever documented eax, so nothing can rely on it. > Actually, we did document it. However, I think it's safe to change. The documentation in this case should say "reserved, returns zero in this implementation", rather than 0. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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