[PATCH 3/4] KVM: PPC: Book3S HV: Preserve guest CFAR register value

[Alexander Graf]

On 05.02.2013, at 05:10, Paul Mackerras wrote:

> The CFAR (Come-From Address Register) is a useful debugging aid that
> exists on POWER7 processors.  Currently HV KVM doesn't save or restore
> the CFAR register for guest vcpus, making the CFAR of limited use in
> guests.
> 
> This adds the necessary code to capture the CFAR value saved in the
> early exception entry code (it has to be saved before any branch is
> executed), save it in the vcpu.arch struct, and restore it on entry
> to the guest.
> 
> Signed-off-by: Paul Mackerras <paulus at samba.org>

Acked-by: Alexander Graf <agraf at suse.de>


Alex