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| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-16 10:40:56 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-12-14 12:34:18 +0100 |
| commit | e5d83c74a5800c2a1fa3ba982c1c4b2b39ae6db2 (patch) | |
| tree | a948fe650674db8496d364d2f5d9561403cbe11c /virt/kvm | |
| parent | bb22dc14a2c29f6efef40ee72344c5d283a92987 (diff) | |
| download | linux-e5d83c74a5800c2a1fa3ba982c1c4b2b39ae6db2.tar.bz2 | |
kvm: make KVM_CAP_ENABLE_CAP_VM architecture agnostic
The first such capability to be handled in virt/kvm/ will be manual
dirty page reprotection.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 2679e476b6c3..1d6b77162d7c 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2948,6 +2948,7 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) #endif case KVM_CAP_IOEVENTFD_ANY_LENGTH: case KVM_CAP_CHECK_EXTENSION_VM: + case KVM_CAP_ENABLE_CAP_VM: return 1; #ifdef CONFIG_KVM_MMIO case KVM_CAP_COALESCED_MMIO: @@ -2971,6 +2972,21 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) return kvm_vm_ioctl_check_extension(kvm, arg); } +int __attribute__((weak)) kvm_vm_ioctl_enable_cap(struct kvm *kvm, + struct kvm_enable_cap *cap) +{ + return -EINVAL; +} + +static int kvm_vm_ioctl_enable_cap_generic(struct kvm *kvm, + struct kvm_enable_cap *cap) +{ + switch (cap->cap) { + default: + return kvm_vm_ioctl_enable_cap(kvm, cap); + } +} + static long kvm_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -2984,6 +3000,15 @@ static long kvm_vm_ioctl(struct file *filp, case KVM_CREATE_VCPU: r = kvm_vm_ioctl_create_vcpu(kvm, arg); break; + case KVM_ENABLE_CAP: { + struct kvm_enable_cap cap; + + r = -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + goto out; + r = kvm_vm_ioctl_enable_cap_generic(kvm, &cap); + break; + } case KVM_SET_USER_MEMORY_REGION: { struct kvm_userspace_memory_region kvm_userspace_mem; |