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Re: [patch 1/3] mmu_notifier: Core code

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From: Andrea Arcangeli <andrea@...>
To: Christoph Lameter <clameter@...>
Cc: Robin Holt <holt@...>, Avi Kivity <avi@...>, Izik Eidus <izike@...>, <kvm-devel@...>, Peter Zijlstra <a.p.zijlstra@...>, <steiner@...>, <linux-kernel@...>, <linux-mm@...>, <daniel.blueman@...>
Subject: Re: [patch 1/3] mmu_notifier: Core code
Date: Saturday, February 2, 2008 - 9:33 pm

On Thu, Jan 31, 2008 at 07:58:40PM -0800, Christoph Lameter wrote:

Exactly. I hope the page-pin will avoid me having to serialize the KVM
page fault against the start/end critical section.

BTW, I wonder if the start/end critical section API is intended to
forbid scheduling inside it. In short I wonder if GRU can is allowed
to take a spinlock in _range_start as last thing before returning, and
to release that same spinlock in _range_end as first thing, and not to
be forced to use a mutex.
--
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Messages in current thread:
[patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 12:57 am)
Re: [patch 1/3] mmu_notifier: Core code, Robin Holt, (Thu Jan 31, 11:52 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 11:58 pm)
Re: [patch 1/3] mmu_notifier: Core code, Andrea Arcangeli, (Sat Feb 2, 9:33 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Mon Feb 4, 3:13 pm)
Re: [patch 1/3] mmu_notifier: Core code, Robin Holt, (Fri Feb 1, 12:15 am)
Re: [patch 1/3] mmu_notifier: Core code, Robin Holt, (Thu Jan 31, 10:31 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 10:39 pm)
Re: [patch 1/3] mmu_notifier: Core code, Jack Steiner, (Thu Jan 31, 11:01 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 11:03 pm)
Re: [patch 1/3] mmu_notifier: Core code, Robin Holt, (Thu Jan 31, 10:47 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 11:01 pm)
Re: [patch 1/3] mmu_notifier: Core code, Jack Steiner, (Thu Jan 31, 9:56 pm)
Re: [patch 1/3] mmu_notifier: Core code, Robin Holt, (Thu Jan 31, 10:24 pm)
Re: [patch 1/3] mmu_notifier: Core code, Jack Steiner, (Thu Jan 31, 10:37 pm)
Re: [patch 1/3] mmu_notifier: Core code, Christoph Lameter, (Thu Jan 31, 10:39 pm)