Messages in this thread | | | Date | Thu, 22 Nov 2012 18:07:43 +0000 | From | Andrew Cooper <> | Subject | Re: [PATCH v2 01/11] kexec: introduce kexec_ops struct |
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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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