From: Dominik Dingel <dingel@xxxxxxxxxxxxxxxxxx>
To enable pfault after live migration we need to expose pfault_token,
pfault_select and pfault_compare, as one reg registers to userspace.
So that qemu is able to transfer this between the source and the target.
Signed-off-by: Dominik Dingel <dingel@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
---
arch/s390/include/uapi/asm/kvm.h | 3 +++
arch/s390/kvm/kvm-s390.c | 24 ++++++++++++++++++++++++
2 files changed, 27 insertions(+)
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index ccfd0b1..cb4c1eb8 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -73,4 +73,7 @@ struct kvm_sync_regs {
#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
+#define KVM_REG_S390_PFTOKEN (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
+#define KVM_REG_S390_PFCOMPARE (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
+#define KVM_REG_S390_PFSELECT (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
#endif
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d8e9f04..a5da2cc 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -561,6 +561,18 @@ static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
r = put_user(vcpu->arch.sie_block->ckc,
(u64 __user *)reg->addr);
break;
+ case KVM_REG_S390_PFTOKEN:
+ r = put_user(vcpu->arch.pfault_token,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_PFCOMPARE:
+ r = put_user(vcpu->arch.pfault_compare,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_PFSELECT:
+ r = put_user(vcpu->arch.pfault_select,
+ (u64 __user *)reg->addr);
+ break;
default:
break;
}
@@ -590,6 +602,18 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
r = get_user(vcpu->arch.sie_block->ckc,
(u64 __user *)reg->addr);
break;
+ case KVM_REG_S390_PFTOKEN:
+ r = get_user(vcpu->arch.pfault_token,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_PFCOMPARE:
+ r = get_user(vcpu->arch.pfault_compare,
+ (u64 __user *)reg->addr);
+ break;
+ case KVM_REG_S390_PFSELECT:
+ r = get_user(vcpu->arch.pfault_select,
+ (u64 __user *)reg->addr);
+ break;
default:
break;
}
--
1.8.4.2
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
