From: Avi Kivity <avi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: HATAYAMA Daisuke <d.hatayama-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Cc: dzickus-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
luto-3s7WtUTddSA@public.gmane.org,
gregkh-l3A5Bk7waGM@public.gmane.org,
kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
joerg.roedel-5C7GfCeVMHo@public.gmane.org,
mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
paul.gortmaker-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org,
zhangyanfei-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org,
ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
ludwig.nussel-l3A5Bk7waGM@public.gmane.org
Subject: Re: [PATCH 0/4] Export offsets of VMCS fields as note information for kdump
Date: Thu, 19 Apr 2012 15:08:00 +0300 [thread overview]
Message-ID: <4F900020.5010702@redhat.com> (raw)
In-Reply-To: <20120419.210119.246504497.d.hatayama-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
On 04/19/2012 03:01 PM, HATAYAMA Daisuke wrote:
> >> It would be not helpful for the qemu crash case you are concerned
> >> about. We want to use the guest state data to look into guest
> >> machine's image in the crasshed qemu.
> >
> > Why?
> >
>
> It seems natural to check the situation from guest machine's side when
> qemu crashs. Suppose a service is running on the guest machine, and
> then the qemu crash. Then, we may need to know the details of the
> progress of the service if it's important. What has been successfully
> done, and what has not yet.
How can a service on the guest be related to a qemu crash? And how
would guest registers help?
You can extract the list of running processes from a qemu crash dump
without looking at guest registers. And most vcpus are running
asynchronously to qemu, so their register contents is irrelevant (if a
vcpu is running synchronously with qemu - it just exited to qemu and is
waiting for a response - then you'd see the details in qemu's call stack).
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-04-19 12:08 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-11 1:39 [PATCH 0/4] Export offsets of VMCS fields as note information for kdump zhangyanfei
2012-04-11 1:49 ` [PATCH 1/4] x86: Add helper variables and functions to hold VMCSINFO zhangyanfei
2012-04-11 1:50 ` [PATCH 2/4] KVM: VMX: Add functions to fill VMCSINFO zhangyanfei
[not found] ` <4F84E365.10201-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-11 8:48 ` Avi Kivity
[not found] ` <4F85454E.6020201-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-11 10:34 ` zhangyanfei
[not found] ` <4F855E3C.9010003-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-11 11:41 ` Avi Kivity
[not found] ` <4F84E0DF.8040206-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-11 1:57 ` [PATCH 3/4] ksysfs: export VMCSINFO via sysfs zhangyanfei
[not found] ` <4F84E50E.2090008-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-12 23:00 ` Greg KH
2012-04-17 1:52 ` zhangyanfei
2012-04-17 2:30 ` Greg KH
2012-04-11 1:58 ` [PATCH 4/4] kexec: Add crash_save_vmcsinfo to update VMCSINFO zhangyanfei
2012-04-11 10:21 ` [PATCH 0/4] Export offsets of VMCS fields as note information for kdump Joerg Roedel
[not found] ` <20120411102136.GG2428-5C7GfCeVMHo@public.gmane.org>
2012-04-11 10:49 ` Avi Kivity
2012-04-11 10:59 ` zhangyanfei
2012-04-17 7:44 ` Avi Kivity
[not found] ` <4F8D1F46.3090901-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-17 10:51 ` zhangyanfei
[not found] ` <4F8D4B4C.8070705-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-17 10:59 ` Avi Kivity
[not found] ` <4F8D4D1C.4010400-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-17 11:25 ` Wen Congyang
[not found] ` <4F8D530C.3050908-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-17 13:04 ` Avi Kivity
2012-04-18 7:30 ` zhangyanfei
[not found] ` <4F8E6DA5.8030503-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-18 8:24 ` Avi Kivity
[not found] ` <4F8E7A5B.5030904-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-18 9:49 ` zhangyanfei
[not found] ` <4F8E8E3D.8040707-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2012-04-18 11:56 ` Avi Kivity
[not found] ` <4F8EABF7.805-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-19 10:36 ` HATAYAMA Daisuke
[not found] ` <20120419.193640.59653378.d.hatayama-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-19 10:42 ` Avi Kivity
[not found] ` <4F8FEC22.400-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-19 11:27 ` HATAYAMA Daisuke
[not found] ` <20120419.202707.276752866.d.hatayama-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-19 11:31 ` Avi Kivity
[not found] ` <4F8FF7AC.1060309-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-19 12:01 ` HATAYAMA Daisuke
[not found] ` <20120419.210119.246504497.d.hatayama-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-04-19 12:08 ` Avi Kivity [this message]
[not found] ` <4F900020.5010702-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-20 10:11 ` HATAYAMA Daisuke
2012-04-22 9:58 ` Avi Kivity
[not found] ` <4F93D64B.50803-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-22 10:33 ` Gleb Natapov
[not found] ` <20120422103340.GE12768-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-22 10:57 ` Avi Kivity
2012-04-17 16:49 ` Anthony Liguori
[not found] ` <4F8D9F20.9050507-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2012-04-18 12:13 ` Avi Kivity
2012-04-18 13:47 ` Nadav Har'El
[not found] ` <20120418134743.GA25786-QeE623+hzFJ/hwrKWqB9+zWi1Rwp9Q0N+oGz7xIJsNs@public.gmane.org>
2012-04-18 14:06 ` Avi Kivity
2012-04-11 8:56 ` Avi Kivity
[not found] ` <4F85472A.4080009-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-04-11 10:12 ` zhangyanfei
2012-04-11 11:15 ` Avi Kivity
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