[PATCH 0/4] Export offsets of VMCS fields as note information for kdump

[Avi Kivity]

On 04/19/2012 02:27 PM, HATAYAMA Daisuke wrote:
> >> The reason why we want to retrieve guest machine's memory image as
> >> crash dump is that then we can debug guest machine's status using
> >> symbolic debugger such as gdb and crash utility.
> >>
> >> This is very useful. Please consider the situation where engineers are
> >> forced to look into guest machine's memory image through qemu-kvm's
> >> process core dump using gdb without any symbolic information. It's
> >> very inefficient.
> > 
> > I still don't follow.  If qemu crashed, the values in guest registers
> > are irrelevant.  In what way can the help debug the qemu crash?
> > 
>
> 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?

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