From: Gerd Hoffmann <kraxel@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>,
Huang Ying <ying.huang@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andi Kleen <andi@firstfloor.org>
Subject: Re: Xenner design and kvm msr handling
Date: Tue, 21 Apr 2009 18:00:45 +0200 [thread overview]
Message-ID: <49EDEDAD.20900@redhat.com> (raw)
In-Reply-To: <49EDCB1D.1010301@redhat.com>
On 04/21/09 15:33, Avi Kivity wrote:
> Gerd Hoffmann wrote:
>> Not sure, have to dig into the xen code to figure.
>>
>> Could be xen doesn't remember the page in the first place. They might
>> let the illegal instruction fault handler patch the opcode. At least I
>> vaguely remember some discussions about that.
Xen does a simple msr-triggered memcpy() as well, without keeping track
of the page. On a quick glimpse I can't find a opcode patching place
either. Hmm.
>> Could be there isn't a interface to forgot the page. "reboot" in xen
>> land is "destroy guest, restart it".
>
> How do you unload a driver then?
The linux module (xen-platform-pci) has no module_exit() ...
cheers,
Gerd
next prev parent reply other threads:[~2009-04-21 16:01 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-08 1:53 [PATCH] Add MCE support to KVM Huang Ying
2009-04-09 15:50 ` Avi Kivity
2009-04-10 3:00 ` Huang Ying
2009-04-11 12:04 ` Avi Kivity
2009-04-11 12:19 ` Andi Kleen
2009-04-11 12:25 ` Avi Kivity
2009-04-13 8:26 ` Andi Kleen
2009-04-13 2:41 ` Huang Ying
2009-04-13 13:02 ` Avi Kivity
2009-04-14 2:04 ` Huang Ying
2009-04-14 10:45 ` Avi Kivity
2009-04-15 7:24 ` Huang Ying
2009-04-18 22:17 ` Anthony Liguori
2009-04-19 8:33 ` Avi Kivity
2009-04-20 7:52 ` Gerd Hoffmann
2009-04-20 8:26 ` Avi Kivity
2009-04-20 8:59 ` Gerd Hoffmann
2009-04-20 9:05 ` Avi Kivity
2009-04-20 10:04 ` Andi Kleen
2009-04-20 11:02 ` Avi Kivity
2009-04-20 11:23 ` Gerd Hoffmann
2009-04-20 11:27 ` Avi Kivity
2009-04-20 12:20 ` Gerd Hoffmann
2009-04-20 12:43 ` Avi Kivity
2009-04-20 13:24 ` Gerd Hoffmann
2009-04-20 13:45 ` Avi Kivity
2009-04-21 9:14 ` Xenner design and kvm msr handling Gerd Hoffmann
2009-04-21 10:14 ` Avi Kivity
2009-04-21 11:41 ` Gerd Hoffmann
2009-04-21 12:27 ` Avi Kivity
2009-04-21 12:47 ` Gerd Hoffmann
2009-04-21 13:33 ` Avi Kivity
2009-04-21 16:00 ` Gerd Hoffmann [this message]
2009-04-21 16:15 ` Avi Kivity
2009-04-21 16:15 ` Avi Kivity
2009-04-22 10:02 ` Gerd Hoffmann
2009-04-22 10:02 ` Gerd Hoffmann
2009-04-21 16:04 ` [PATCH] Add MCE support to KVM Anthony Liguori
2009-04-21 16:17 ` Avi Kivity
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