From: Avi Kivity <avi@redhat.com>
To: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>,
Takuya Yoshikawa <takuya.yoshikawa@gmail.com>,
mtosatti@redhat.com, kvm@vger.kernel.org
Subject: Re: [RFC PATCH 3/3] KVM: MMU: Optimize guest page table walk
Date: Wed, 20 Apr 2011 12:09:51 +0300 [thread overview]
Message-ID: <4DAEA2DF.8060603@redhat.com> (raw)
In-Reply-To: <20110419124742.6717d827.yoshikawa.takuya@oss.ntt.co.jp>
On 04/19/2011 06:47 AM, Takuya Yoshikawa wrote:
> So if certain algorithm seems to be addapted, yes, I will test based
> on that. IIRC, any practically good algorithm has not been found yet,
> right?
I think a simple sort based on size will provide the same optimization
(just the cache, not get_user()) without any downsides. Most memory in a
guest is usually in just one or two slots, that's the reason for the
high hit rate.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-04-20 9:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-18 18:32 [PATCH 1/3] KVM: Introduce a helper to check if gfn is in memslot Takuya Yoshikawa
2011-04-18 18:34 ` [PATCH 2/3] KVM: MMU: Introduce a helper to read guest pte Takuya Yoshikawa
2011-04-20 9:07 ` Avi Kivity
2011-04-20 9:35 ` Roedel, Joerg
2011-04-20 10:05 ` Avi Kivity
2011-04-20 11:06 ` Roedel, Joerg
2011-04-20 11:18 ` Avi Kivity
2011-04-20 13:33 ` [PATCH] KVM: MMU: Make cmpxchg_gpte aware of nesting too Roedel, Joerg
2011-04-21 1:02 ` Takuya Yoshikawa
2011-04-21 8:11 ` Avi Kivity
2011-04-21 1:07 ` [PATCH 2/3] KVM: MMU: Introduce a helper to read guest pte Takuya Yoshikawa
2011-04-18 18:38 ` [RFC PATCH 3/3] KVM: MMU: Optimize guest page table walk Takuya Yoshikawa
2011-04-18 18:52 ` Joerg Roedel
2011-04-19 1:24 ` Takuya Yoshikawa
2011-04-19 6:20 ` Joerg Roedel
2011-04-19 1:42 ` Xiao Guangrong
2011-04-19 3:47 ` Takuya Yoshikawa
2011-04-20 9:09 ` Avi Kivity [this message]
2011-04-20 9:02 ` Avi Kivity
2011-04-29 2:46 ` Andi Kleen
2011-04-29 5:38 ` Takuya Yoshikawa
2011-04-29 6:30 ` Takuya Yoshikawa
2011-04-29 6:59 ` Andi Kleen
2011-04-29 13:51 ` Takuya Yoshikawa
2011-04-29 16:05 ` Andi Kleen
2011-05-01 13:32 ` Avi Kivity
2011-05-01 20:51 ` Andi Kleen
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