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| author | Cornelia Huck | 2013-10-23 18:26:34 +0200 |
|---|---|---|
| committer | Cornelia Huck | 2014-03-21 13:42:39 +0100 |
| commit | d938dc55225a7212e7f31c5a8571da304cc3de16 (patch) | |
| tree | 082b29c296ab2458d8365969bb85af23fe4a0dde /arch/s390/kvm/kvm-s390.c | |
| parent | MIPS: KVM: Remove dead code in CP0 emulation (diff) | |
| download | kernel-qcow2-linux-d938dc55225a7212e7f31c5a8571da304cc3de16.tar.gz kernel-qcow2-linux-d938dc55225a7212e7f31c5a8571da304cc3de16.tar.xz kernel-qcow2-linux-d938dc55225a7212e7f31c5a8571da304cc3de16.zip | |
KVM: Add per-vm capability enablement.
Allow KVM_ENABLE_CAP to act on a vm as well as on a vcpu. This makes more
sense when the caller wants to enable a vm-related capability.
s390 will be the first user; wire it up.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 7337c577e949..9f1e99f12d4f 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -159,6 +159,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_S390_CSS_SUPPORT: case KVM_CAP_IOEVENTFD: case KVM_CAP_DEVICE_CTRL: + case KVM_CAP_ENABLE_CAP_VM: r = 1; break; case KVM_CAP_NR_VCPUS: @@ -187,6 +188,21 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, return 0; } +static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) +{ + int r; + + if (cap->flags) + return -EINVAL; + + switch (cap->cap) { + default: + r = -EINVAL; + break; + } + return r; +} + long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -204,6 +220,14 @@ long kvm_arch_vm_ioctl(struct file *filp, r = kvm_s390_inject_vm(kvm, &s390int); break; } + case KVM_ENABLE_CAP: { + struct kvm_enable_cap cap; + r = -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + break; + r = kvm_vm_ioctl_enable_cap(kvm, &cap); + break; + } default: r = -ENOTTY; } |