[PATCH v2] KVM: arm/arm64: avoid using kvm_run for in-kernel emulation

[Christoffer Dall]

On Fri, Apr 10, 2015 at 03:59:47PM +0100, Andre Przywara wrote:
> Our in-kernel VGIC emulation still uses struct kvm_run briefly before
> writing back the emulation result into the guest register.
> Although this particular case looks safe from an exploitation
> perspective, we can save some unneeded copying at the end of the VGIC
> emulation code.
> Replace the usage of struct kvm_run in favour of passing separate
> parameters in io_mem_abort(). Since the write back is now handled
> for all kvm_io_bus users, we can get rid of it in the VGIC.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Reviewed-by: Christoffer Dall <christoffer.dall at linaro.org>