[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [Question] dump memory when host pci device is used by
From: |
Avi Kivity |
Subject: |
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest |
Date: |
Mon, 24 Oct 2011 17:01:36 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20110930 Thunderbird/7.0.1 |
On 10/24/2011 04:25 PM, Dave Anderson wrote:
> > The question is that: 'virsh dump' can not be used when host pci device
> > is used by guest. We are discussing how to fix the problem. We have
> > determined
> > that introduce a new monitor command dump. Jan suggested that the core
> > file's
> > format is gdb standard core format. Does crash support such format? If no,
> > is it possible to support such format?
>
> If you are talking about an ELF core dump of the user-space qemu-kvm process
> running on the host, then it's certainly not supported.
No, an ELF image of the guest's physical memory.
> As to whether it's possible, I suppose it could be done if a
> phyical-memory-read
> function could be created for it, similar to what I asked about for live
> analysis
> of a guest kernel run on/from the KVM host.
We could use the gdb protocol for this. Currently it reads/writes
virtual memory, but we could extend the gdbserver command to make these
commands apply to physical memory.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, (continued)
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/19
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/20
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/20
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/21
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/21
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Dave Anderson, 2011/10/21
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/21
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Richard W.M. Jones, 2011/10/21
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/23
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Dave Anderson, 2011/10/24
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest,
Avi Kivity <=
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Dave Anderson, 2011/10/24
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Avi Kivity, 2011/10/24
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Dave Anderson, 2011/10/24
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/24
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/25
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/25
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Avi Kivity, 2011/10/25
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Paolo Bonzini, 2011/10/25
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Avi Kivity, 2011/10/25
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Paolo Bonzini, 2011/10/25