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| author | Carsten Otte <cotte@de.ibm.com> | 2012-05-15 16:15:26 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-05-18 04:06:02 +0400 |
| commit | 14eebd917d154f3181d2cb219e40b18eec314db7 (patch) | |
| tree | 7e95ec1b713f26456f606e277526a8cc7b1f58e3 /arch/s390/kvm/kvm-s390.c | |
| parent | 1526bf9ccf310f1d35c1275b8b477a249d25aaf2 (diff) | |
| download | linux-14eebd917d154f3181d2cb219e40b18eec314db7.tar.xz | |
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>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 5c761bffa02d..894b3e47b8c1 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(®, argp, sizeof(reg))) + break; + if (ioctl == KVM_SET_ONE_REG) + r = kvm_arch_vcpu_ioctl_set_one_reg(vcpu, ®); + else + r = kvm_arch_vcpu_ioctl_get_one_reg(vcpu, ®); + break; + } #ifdef CONFIG_KVM_S390_UCONTROL case KVM_S390_UCAS_MAP: { struct kvm_s390_ucas_mapping ucasmap; |