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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2012-12-20 18:32:11 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-01-08 01:53:42 +0400 |
| commit | d6712df95bcfea597fc3ea2405ec13e8b69a7b8c (patch) | |
| tree | 5079dabfbf47e1d43af960248e93193e768d02bc | |
| parent | f379aae558b8daff0f7a1c5fc225af5d35c741f7 (diff) | |
| download | linux-d6712df95bcfea597fc3ea2405ec13e8b69a7b8c.tar.xz | |
KVM: s390: Base infrastructure for enabling capabilities.
Make s390 support KVM_ENABLE_CAP.
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 26 |
2 files changed, 27 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 8a0de309932f..73bd159c5559 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -913,7 +913,7 @@ documentation when it pops into existence). 4.37 KVM_ENABLE_CAP Capability: KVM_CAP_ENABLE_CAP -Architectures: ppc +Architectures: ppc, s390 Type: vcpu ioctl Parameters: struct kvm_enable_cap (in) Returns: 0 on success; -1 on error diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index f718bc65835c..5ff26033825c 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -140,6 +140,7 @@ int kvm_dev_ioctl_check_extension(long ext) #endif case KVM_CAP_SYNC_REGS: case KVM_CAP_ONE_REG: + case KVM_CAP_ENABLE_CAP: r = 1; break; case KVM_CAP_NR_VCPUS: @@ -808,6 +809,22 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) return 0; } +static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, + struct kvm_enable_cap *cap) +{ + int r; + + if (cap->flags) + return -EINVAL; + + switch (cap->cap) { + default: + r = -EINVAL; + break; + } + return r; +} + long kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -894,6 +911,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp, r = 0; break; } + case KVM_ENABLE_CAP: + { + struct kvm_enable_cap cap; + r = -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + break; + r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); + break; + } default: r = -ENOTTY; } |