forked from Minki/linux
KVM: s390: KVM_GET/SET_ONEREG for s390
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 <cotte@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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@ -135,6 +135,7 @@ int kvm_dev_ioctl_check_extension(long ext)
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case KVM_CAP_S390_UCONTROL:
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#endif
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case KVM_CAP_SYNC_REGS:
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case KVM_CAP_ONE_REG:
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r = 1;
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break;
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case KVM_CAP_NR_VCPUS:
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@ -439,6 +440,31 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
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return 0;
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}
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static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
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struct kvm_one_reg *reg)
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{
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int r = -EINVAL;
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switch (reg->id) {
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default:
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break;
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}
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return r;
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}
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static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
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struct kvm_one_reg *reg)
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{
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int r = -EINVAL;
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switch (reg->id) {
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default:
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break;
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}
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return r;
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}
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static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
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{
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@ -770,6 +796,18 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
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case KVM_S390_INITIAL_RESET:
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r = kvm_arch_vcpu_ioctl_initial_reset(vcpu);
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break;
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case KVM_SET_ONE_REG:
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case KVM_GET_ONE_REG: {
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struct kvm_one_reg reg;
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r = -EFAULT;
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if (copy_from_user(®, argp, sizeof(reg)))
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break;
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if (ioctl == KVM_SET_ONE_REG)
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r = kvm_arch_vcpu_ioctl_set_one_reg(vcpu, ®);
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else
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r = kvm_arch_vcpu_ioctl_get_one_reg(vcpu, ®);
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break;
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}
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#ifdef CONFIG_KVM_S390_UCONTROL
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case KVM_S390_UCAS_MAP: {
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struct kvm_s390_ucas_mapping ucasmap;
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