tree be4f2ba4705ed81862392378fb220d6d0b840fd1
parent d85ebff0073c783f0c74dc0e08c348f6f2d807c7
author James Hogan <james.hogan@imgtec.com> 1467657311 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1467727754 +0200

MIPS: KVM: Don't save/restore lo/hi for r6

MIPSr6 doesn't have lo/hi registers, so don't bother saving or
restoring them, and don't expose them to userland with the KVM ioctl
interface either.

In fact the lo/hi registers aren't callee saved in the MIPS ABIs anyway,
so there is no need to preserve the host lo/hi values at all when
transitioning to and from the guest (which happens via a function call).

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim KrÄmÃ¡Å™ <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>