From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Zachary Amsden <zach@vmware.com>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
xen-devel <xen-devel@lists.xensource.com>,
Thomas Gleixner <tglx@linutronix.de>,
Hugh Dickins <hugh@veritas.com>,
kvm-devel <kvm-devel@lists.sourceforge.net>,
Virtualization Mailing List <virtualization@lists.osdl.org>,
Rusty Russell <rusty@rustcorp.com.au>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction
Date: Sat, 31 May 2008 01:13:59 +0100 [thread overview]
Message-ID: <48409847.4000902@goop.org> (raw)
In-Reply-To: <1211585122.7465.70.camel@bodhitayantram.eng.vmware.com>
Zachary Amsden wrote:
> We don't fault. We write directly to the primary page tables, and clear
> the pte just like native. We just issue all mprotect updates in the
> queue, and flush the queue when leaving lazy mmu mode. You can't wait
> for the TLB flush, you must flush the updates before releasing the
> pagetable lock, or you could get misordered updates in an SMP system.
>
How do you track which ptes need shadow updates? Do you walk the entire
pagetable on tlb flush? Or just rebuild the shadow from scratch on demand?
J
next prev parent reply other threads:[~2008-05-31 0:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-23 14:20 [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction Jeremy Fitzhardinge
2008-05-23 14:20 ` [PATCH 1 of 4] mm: add a pte_rmw transaction abstraction Jeremy Fitzhardinge
2008-05-23 14:20 ` [PATCH 2 of 4] paravirt: add hooks for pte_rmw_start/commit Jeremy Fitzhardinge
2008-05-23 14:20 ` [PATCH 3 of 4] xen: implement pte_rmw_start/commit Jeremy Fitzhardinge
2008-05-23 14:20 ` [PATCH 4 of 4] xen: add mechanism to extend existing multicalls Jeremy Fitzhardinge
2008-05-23 18:27 ` [PATCH 0 of 4] mm+paravirt+xen: add pte read-modify-write abstraction Zachary Amsden
2008-05-23 20:32 ` Jeremy Fitzhardinge
2008-05-23 23:25 ` Zachary Amsden
2008-05-31 0:13 ` Jeremy Fitzhardinge [this message]
2008-06-02 20:09 ` Zachary Amsden
2008-05-23 18:57 ` Linus Torvalds
2008-05-23 20:42 ` Jeremy Fitzhardinge
2008-05-24 17:25 ` Linus Torvalds
2008-05-24 20:44 ` Jeremy Fitzhardinge
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