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Re: [Qemu-devel] [Question] dump memory when host pci device is used by
From: |
Wen Congyang |
Subject: |
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest |
Date: |
Tue, 18 Oct 2011 15:15:29 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
Hi, Jan Kiszka
At 10/10/2011 05:34 PM, Jan Kiszka Write:
> On 2011-10-10 11:02, Daniel P. Berrange wrote:
>> On Mon, Oct 10, 2011 at 08:52:08AM +0200, Jan Kiszka wrote:
>
> Run gdb with "set debug remote 1" and watch the communication, it is not
> that complex. But a dump command is probably simpler for those
> scenarios, I agree.
I have implemented the command dump and reuse migration's code. But I meet a
problem
when I test it.
My qemu-kvm's tree is not updated about 2 months ago, because kernel.org is
down, and
I forgot to pull from github.
After I pull it from github, I find the following changes:
@@ -1523,9 +1523,7 @@ static void
assigned_dev_unregister_msix_mmio(AssignedDevice *dev)
static const VMStateDescription vmstate_assigned_device = {
.name = "pci-assign",
- .fields = (VMStateField []) {
- VMSTATE_END_OF_LIST()
- }
+ .unmigratable = 1,
};
static void reset_assigned_device(DeviceState *dev)
Why do you remove fields from vmstate_assigned_device?
It is useful for dump because it does not check unmigratable. If
vmstate_assigned_device
does not contain .fields, qemu will crash in vmstate_save_state().
Thanks
Wen Congyang
>
> Jan
>
- 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, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Alexander Graf, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Daniel P. Berrange, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest,
Wen Congyang <=
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Richard W.M. Jones, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/18