[PATCH v2] kvm-pr: manage single-step mode

[Paul Mackerras]

On Fri, Apr 08, 2016 at 06:05:00PM +0200, Laurent Vivier wrote:
> Until now, when we connect gdb to the QEMU gdb-server, the
> single-step mode is not managed.
> 
> This patch adds this, only for kvm-pr:
> 
> If KVM_GUESTDBG_SINGLESTEP is set, we enable single-step trace bit in the
> MSR (MSR_SE) just before the __kvmppc_vcpu_run(), and disable it just after.
> In kvmppc_handle_exit_pr, instead of routing the interrupt to
> the guest, we return to host, with KVM_EXIT_DEBUG reason.
> 
> Signed-off-by: Laurent Vivier <lvivier at redhat.com>

Thanks, applied to my kvm-ppc-next branch.

Paul.