From: Paolo Bonzini <pbonzini@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>,
Jan Kiszka <jan.kiszka@siemens.com>,
"Richard W.M. Jones" <rjones@redhat.com>,
Luiz Capitulino <lcapitulino@redhat.com>,
Dave Anderson <anderson@redhat.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest
Date: Tue, 25 Oct 2011 10:35:59 +0200 [thread overview]
Message-ID: <4EA674EF.9010308@redhat.com> (raw)
In-Reply-To: <4EA67216.3050309@redhat.com>
On 10/25/2011 10:23 AM, Avi Kivity wrote:
> On 10/25/2011 10:06 AM, Wen Congyang wrote:
>> Hi, Avi Kivity, Dave Anderson
>>
>> I have two questions about it:
>>
>> 1. How to know the guest's physical base address in qemu?
>
> In fact, it's impossible.
>
> Perhaps crash can scan through the core looking for a signature. Need
> to be careful since multiple signatures may be detected (a kdump kernel,
> a kernel image in pagecache, or a nested guest).
Crash uses a heuristic based on the IDT base to identify the base from
migrate-to-file output. It also needs CR3 in order to read from virtual
address.
Paolo
next prev parent reply other threads:[~2011-10-25 8:36 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-07 9:46 [Qemu-devel] [Question] dump memory when host pci device is used by guest Wen Congyang
2011-10-07 10:16 ` Jan Kiszka
2011-10-07 12:25 ` Wen Congyang
2011-10-07 12:56 ` Jan Kiszka
2011-10-07 14:05 ` Wen Congyang
2011-10-07 15:06 ` Jan Kiszka
2011-10-10 9:00 ` Daniel P. Berrange
2011-10-08 15:16 ` Richard W.M. Jones
2011-10-09 8:49 ` Jan Kiszka
2011-10-09 10:23 ` Richard W.M. Jones
2011-10-09 10:26 ` Jan Kiszka
2011-10-10 2:21 ` Wen Congyang
2011-10-10 6:52 ` Jan Kiszka
2011-10-10 6:59 ` Wen Congyang
2011-10-10 7:01 ` Jan Kiszka
2011-10-10 7:17 ` Wen Congyang
2011-10-10 7:22 ` Jan Kiszka
2011-10-10 7:47 ` Wen Congyang
2011-10-10 7:48 ` Jan Kiszka
2011-10-10 8:28 ` Wen Congyang
2011-10-10 7:08 ` Alexander Graf
2011-10-10 7:10 ` Jan Kiszka
2011-10-10 9:02 ` Daniel P. Berrange
2011-10-10 9:34 ` Jan Kiszka
2011-10-11 2:27 ` Wen Congyang
2011-10-18 7:15 ` Wen Congyang
2011-10-18 7:52 ` Jan Kiszka
2011-10-18 7:58 ` Wen Congyang
2011-10-18 8:19 ` Jan Kiszka
2011-10-18 8:25 ` Wen Congyang
2011-10-18 8:26 ` Jan Kiszka
2011-10-18 8:31 ` Wen Congyang
2011-10-18 8:31 ` Jan Kiszka
2011-10-18 8:34 ` Richard W.M. Jones
2011-10-18 8:36 ` Jan Kiszka
2011-10-18 8:39 ` Jan Kiszka
2011-10-18 10:41 ` Paolo Bonzini
2011-10-18 10:42 ` Christoph Hellwig
2011-10-18 12:47 ` Jan Kiszka
2011-10-18 13:08 ` Christoph Hellwig
2011-10-18 13:13 ` Jan Kiszka
2011-10-18 10:47 ` Jan Kiszka
2011-10-18 13:30 ` Richard W.M. Jones
2011-10-18 13:34 ` Jan Kiszka
2011-10-18 9:43 ` Wen Congyang
2011-10-18 10:28 ` Jan Kiszka
2011-10-18 13:51 ` Wen Congyang
2011-10-18 13:55 ` Jan Kiszka
2011-10-18 14:17 ` Wen Congyang
2011-10-18 14:21 ` Jan Kiszka
2011-10-18 15:04 ` Wen Congyang
2011-10-18 15:27 ` Jan Kiszka
2011-10-19 1:23 ` Wen Congyang
2011-10-19 2:04 ` KAMEZAWA Hiroyuki
2011-10-19 11:40 ` Jan Kiszka
2011-10-20 1:22 ` Wen Congyang
2011-10-20 9:41 ` Jan Kiszka
2011-10-20 10:03 ` Wen Congyang
2011-10-21 7:11 ` Jan Kiszka
2011-10-21 7:50 ` Wen Congyang
2011-10-21 13:02 ` Dave Anderson
2011-10-21 13:16 ` Jan Kiszka
2011-10-21 14:12 ` Richard W.M. Jones
2011-10-24 2:25 ` Wen Congyang
2011-10-24 14:25 ` Dave Anderson
2011-10-24 15:01 ` Avi Kivity
2011-10-24 15:25 ` Dave Anderson
2011-10-24 15:30 ` Avi Kivity
2011-10-24 15:58 ` Dave Anderson
2011-10-25 1:37 ` Wen Congyang
2011-10-25 7:37 ` Jan Kiszka
2011-10-25 8:06 ` Wen Congyang
2011-10-25 8:23 ` Avi Kivity
2011-10-25 8:35 ` Paolo Bonzini [this message]
2011-10-25 8:52 ` Avi Kivity
2011-10-25 8:56 ` Paolo Bonzini
2011-10-25 9:19 ` Jan Kiszka
2011-10-25 13:18 ` Dave Anderson
2011-10-25 13:22 ` Avi Kivity
2011-10-18 7:58 ` Daniel P. Berrange
2011-10-18 8:17 ` Jan Kiszka
2011-10-18 8:25 ` Jan Kiszka
2011-10-18 8:25 ` Daniel P. Berrange
2011-10-18 8:30 ` Jan Kiszka
2011-10-10 9:08 ` Daniel P. Berrange
2011-10-10 9:10 ` Daniel P. Berrange
2011-10-10 9:34 ` Richard W.M. Jones
2011-10-10 10:17 ` Jan Kiszka
2011-10-10 9:34 ` Jan Kiszka
2011-10-10 10:19 ` Daniel P. Berrange
2011-10-11 2:20 ` Wen Congyang
2011-10-11 6:58 ` Jan Kiszka
2011-10-11 7:13 ` Wen Congyang
2011-10-10 10:21 ` Alon Levy
2011-10-10 10:48 ` Paolo Bonzini
2011-10-10 11:04 ` Daniel P. Berrange
2011-10-10 11:09 ` Paolo Bonzini
2011-10-10 12:00 ` [Qemu-devel] windows crash dump header. was: " Alon Levy
2011-10-10 12:38 ` Paolo Bonzini
2011-10-10 13:47 ` Alon Levy
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