KVM: s390: provide the prefix register via kvm_run
Add the prefix register to the synced register field in kvm_run.
While we need the prefix register most of the time read-only, this
patch also adds handling for guest dirtying of the prefix register.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h
index 325560a..9fc328c 100644
--- a/arch/s390/include/asm/kvm.h
+++ b/arch/s390/include/asm/kvm.h
@@ -41,7 +41,9 @@
struct kvm_guest_debug_arch {
};
+#define KVM_SYNC_PREFIX (1UL << 0)
/* definition of registers in kvm_run */
struct kvm_sync_regs {
+ __u64 prefix; /* prefix register */
};
#endif