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Date: Mon, 16 Jun 2008 19:13:48 +0100 (BST) From: Hugh Dickins <hugh@...itas.com> To: Jeremy Fitzhardinge <jeremy@...p.org> cc: Linus Torvalds <torvalds@...ux-foundation.or>, Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>, x86@...nel.org, xen-devel <xen-devel@...ts.xensource.com>, Thomas Gleixner <tglx@...utronix.de>, Zachary Amsden <zach@...are.com>, kvm-devel <kvm-devel@...ts.sourceforge.net>, Virtualization Mailing List <virtualization@...ts.osdl.org>, Rusty Russell <rusty@...tcorp.com.au>, Peter Zijlstra <a.p.zijlstra@...llo.nl> Subject: Re: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction On Mon, 16 Jun 2008, Linus Torvalds wrote: > On Mon, 16 Jun 2008, Jeremy Fitzhardinge wrote: > > > > ptep_modify_prot_start() returns the current pte value, and puts the > > pte entry into a state where either the hardware will not update the > > pte, or if it does, the updates will be preserved on commit. > > > > ptep_modify_prot_commit() writes back the updated pte, makes sure that > > any hardware updates made since ptep_modify_prot_start() are > > preserved. > > Ok, I'm fine with this now that it's renamed to be clearly about just > protection bits. > > So > > Acked-by: Linus Torvalds <torvalds@...ux-foundation.org> And seems very reasonable (and exceptionally well described) to me too. Acked-by: Hugh Dickins <hugh@...itas.com> -- 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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