From: Tim Deegan <Tim.Deegan@citrix.com>
To: weiming <zephyr.zhao@gmail.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Subject: Re: where is writable page table implemented?
Date: Tue, 1 Apr 2008 08:38:25 +0000 [thread overview]
Message-ID: <20080401083825.GA4628@york.uk.xensource.com> (raw)
In-Reply-To: <add59a3f0803301643r740ba4c5xda84c40b46d7a157@mail.gmail.com>
At 19:43 -0400 on 30 Mar (1206906207), weiming wrote:
> with writable page table, why guest os still calls update_va_mapping to
> update the pte?
It's faster to call into Xen with an explicit modification, or a list of
them, than to have xen trap and do a full x86 instruction emaulation to
figure out what you werere doing.
Cheers,
Tim.
--
Tim Deegan <Tim.Deegan@citrix.com>
Principal Software Engineer, Citrix Systems (R&D) Ltd.
[Company #02300071, SL9 0DZ, UK.]
next prev parent reply other threads:[~2008-04-01 8:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-24 16:18 where is writable page table implemented? weiming
2008-03-24 16:25 ` Tim Deegan
2008-03-24 18:26 ` weiming
2008-03-25 10:43 ` Tim Deegan
2008-03-30 23:43 ` weiming
2008-04-01 8:38 ` Tim Deegan [this message]
2008-04-01 15:37 ` weiming
2008-04-01 16:17 ` Tim Deegan
2008-03-25 16:30 ` Mark Williamson
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