From: Carsten Otte co...@de.ibm.com
This patch enables KVM_CAP_ONE_REG for s390 and implements stubs
for KVM_GET/SET_ONE_REG. This is based on the ppc implementation.
Signed-off-by: Carsten Otte co...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/kvm-s390.c | 38 ++
1 file changed, 38 insertions(+)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 5c761bf..894b3e4 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -135,6 +135,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_S390_UCONTROL:
#endif
case KVM_CAP_SYNC_REGS:
+ case KVM_CAP_ONE_REG:
r = 1;
break;
case KVM_CAP_NR_VCPUS:
@@ -439,6 +440,31 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
return 0;
}
+static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
+ struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg-id) {
+ default:
+ break;
+ }
+
+ return r;
+}
+
+static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
+ struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg-id) {
+ default:
+ break;
+ }
+
+ return r;
+}
static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
{
@@ -770,6 +796,18 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
case KVM_S390_INITIAL_RESET:
r = kvm_arch_vcpu_ioctl_initial_reset(vcpu);
break;
+ case KVM_SET_ONE_REG:
+ case KVM_GET_ONE_REG: {
+ struct kvm_one_reg reg;
+ r = -EFAULT;
+ if (copy_from_user(reg, argp, sizeof(reg)))
+ break;
+ if (ioctl == KVM_SET_ONE_REG)
+ r = kvm_arch_vcpu_ioctl_set_one_reg(vcpu, reg);
+ else
+ r = kvm_arch_vcpu_ioctl_get_one_reg(vcpu, reg);
+ break;
+ }
#ifdef CONFIG_KVM_S390_UCONTROL
case KVM_S390_UCAS_MAP: {
struct kvm_s390_ucas_mapping ucasmap;
--
1.7.10.2
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