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SubjectRe: [PATCH v2 01/11] kexec: introduce kexec_ops struct
On 22/11/12 17:47, H. Peter Anvin wrote:
> The other thing that should be considered here is how utterly
> preposterous the notion of doing in-guest crash dumping is in a system
> that contains a hypervisor. The reason for kdump is that on bare metal
> there are no other options, but in a hypervisor system the right thing
> should be for the hypervisor to do the dump (possibly spawning a clean
> I/O domain if the I/O domain is necessary to access the media.)
>
> There is absolutely no reason to have a crashkernel sitting around in
> each guest, consuming memory, and possibly get corrupt.
>
> -hpa
>

I agree that regular guests should not be using the kexec/kdump.
However, this patch series is required for allowing a pvops kernel to be
a crash kernel for Xen, which is very important from dom0/Xen's point of
view.

--
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com



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