linux-kernel - Re: [PATCH 1/2] x86, lib: Add a wbinvd helper for an arbitrary cpu set

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Message-ID: <20101124182252.GI24892@aftab>
Date:	Wed, 24 Nov 2010 19:22:52 +0100
From:	Borislav Petkov <bp@...64.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"mingo@...e.hu" <mingo@...e.hu>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	Avi Kivity <avi@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] x86, lib: Add a wbinvd helper for an arbitrary cpu
 set

On Wed, Nov 24, 2010 at 12:49:06PM -0500, H. Peter Anvin wrote:
> On 11/24/2010 09:44 AM, Borislav Petkov wrote:
> > From: Borislav Petkov <borislav.petkov@....com>
> > 
> > Add a wbinvd helper for an arbitrary set of CPUs.
> > 
> 
> Are there any expected users of this other than KVM?

Not that I know of. I had an earlier version for kvm which did

for_each_cpu(cpu, mask)
	wbinvd_on_cpu(cpu)


but decided to add wbinvd_on_cpus() for completeness. Let me know what
your preference is.

Thanks.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
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