[PATCH 0/2] kvm: disable virtualization on kdump

Simon Horman horms at verge.net.au
Wed Oct 22 19:28:24 EDT 2008

On Mon, Oct 20, 2008 at 01:01:32PM -0200, Eduardo Habkost wrote:
> The following two patches should make kdump work when the kvm-intel module
> is loaded. We need to disable vmx mode before booting the kdump kernel,
> so I've introduced a notifier interface where KVM can hook and disable
> virtualization on all CPUs just before they are halted.
> It has the same purpose of the KVM reboot notifier that gets executed
> at kexec-time. But on the kdump case, things are not as simple because
> the kernel has just crashed.
> The notifier interface being introduced is x86-specific. I don't know
> if an arch-independent interface would be more appropriate for this
> case.
> It was tested only using kvm-intel. Testing on different machines
> is welcome.

These changes look fine to me from a kexec/kdump point of view.

Reviewed-by: Simon Horman <horms at verge.net.au>

Simon Horman
  VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
  H: www.vergenet.net/~horms/             W: www.valinux.co.jp/en

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