From 536336c21697551ceca44bdffb9f53e6cc5f2f20 Mon Sep 17 00:00:00 2001 From: Dominik Dingel Date: Mon, 30 Sep 2013 10:55:33 +0200 Subject: KVM: async_pf: Exploit one reg interface for pfault 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 Signed-off-by: Christian Borntraeger --- arch/s390/kvm/kvm-s390.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'arch/s390/kvm/kvm-s390.c') diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index d8e9f04977db..a5da2cc798c8 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; } -- cgit v1.2.3-55-g7522