linux-kernel - [PATCH v7 00/10] KVM: MMU: fast page fault

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Message-ID: <4FE1822D.8010002@linux.vnet.ibm.com>
Date:	Wed, 20 Jun 2012 15:56:29 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: [PATCH v7 00/10] KVM: MMU: fast page fault

Changlog:
- always atomicly update the spte if it can be updated out of mmu-lock
- rename spte_can_be_writable() to spte_is_locklessly_modifiable()
- cleanup and comment spte_write_protect()

Performance result:
(The benchmark can be found at: http://www.spinics.net/lists/kvm/msg73011.html)

                               before            after
Run 10 times, Avg time:      538233957 ns.      249809853 ns. +53.6%

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