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Commit 14eebd91 authored by Carsten Otte's avatar Carsten Otte Committed by Marcelo Tosatti
Browse files

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: default avatarCarsten Otte <cotte@de.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 1526bf9c

arch/s390/kvm/kvm-s390.c

+38 −0
Original line number Diff line number Diff line
@@ -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;