MIPS: Probe guest CP0_UserLocal
Probe for presence of guest CP0_UserLocal register and expose via
cpu_guest_has_userlocal. This register is optional pre-r6, so this will
allow KVM to only save/restore/expose the guest CP0_UserLocal register
if it exists.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index e12d4ec..e898f44 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -547,6 +547,9 @@
#ifndef cpu_guest_has_maar
#define cpu_guest_has_maar (cpu_data[0].guest.options & MIPS_CPU_MAAR)
#endif
+#ifndef cpu_guest_has_userlocal
+#define cpu_guest_has_userlocal (cpu_data[0].guest.options & MIPS_CPU_ULRI)
+#endif
/*
* Guest dynamic capabilities