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Date: Tue, 17 May 2011 09:05:27 +0200 From: Ingo Molnar <mingo@...e.hu> To: "H. Peter Anvin" <hpa@...or.com> Cc: Fenghua Yu <fenghua.yu@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Asit K Mallick <asit.k.mallick@...el.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Avi Kivity <avi@...hat.com>, Arjan van de Ven <arjan@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, Andi Kleen <andi@...stfloor.org>, linux-kernel <linux-kernel@...r.kernel.org>, Pekka Enberg <penberg@...helsinki.fi> Subject: Re: [PATCH v2 0/4] Enable SMEP CPU Feature * H. Peter Anvin <hpa@...or.com> wrote: > On 05/16/2011 02:34 PM, Fenghua Yu wrote: > > > > Note: This patch set doesn't enable the SMEP feature in KVM. If it's needed, > > another patch will be pushed for enabling the feature in KVM. > > > > Hi Avi, > > Could you comment on if this needs to be a gating factor? I think KVM would benefit from the native kernel playing guinea pig whether SMEP is really, truly 100% trouble-free to enable by default (for Linux) ;-) Some programmable configurability seems necessary on the KVM side, as KVM has no control over how sane the guest kernel is. Thanks, Ingo -- 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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