diff options
| author | Anup Patel <anup.patel@linaro.org> | 2013-09-30 14:20:07 +0530 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2013-10-02 11:29:48 -0700 |
| commit | 42c4e0c77ac91505ab94284b14025e3a0865c0a5 (patch) | |
| tree | 1d5002e27ad0fd99a54f2cd3084724ffa37c2e44 | |
| parent | 473bdc0e6565ebb22455657a40daa21b6b4ee16b (diff) | |
ARM/ARM64: KVM: Implement KVM_ARM_PREFERRED_TARGET ioctl
For implementing CPU=host, we need a mechanism for querying
preferred VCPU target type on underlying Host.
This patch implements KVM_ARM_PREFERRED_TARGET vm ioctl which
returns struct kvm_vcpu_init instance containing information
about preferred VCPU target type and target specific features
available for it.
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| -rw-r--r-- | arch/arm/kvm/arm.c | 13 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 9c697db2787e..cc5adb9349ef 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -797,6 +797,19 @@ long kvm_arch_vm_ioctl(struct file *filp, return -EFAULT; return kvm_vm_ioctl_set_device_addr(kvm, &dev_addr); } + case KVM_ARM_PREFERRED_TARGET: { + int err; + struct kvm_vcpu_init init; + + err = kvm_vcpu_preferred_target(&init); + if (err) + return err; + + if (copy_to_user(argp, &init, sizeof(init))) + return -EFAULT; + + return 0; + } default: return -EINVAL; } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 99c25338ede8..e32e776f20c0 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1012,6 +1012,7 @@ struct kvm_s390_ucas_mapping { /* VM is being stopped by host */ #define KVM_KVMCLOCK_CTRL _IO(KVMIO, 0xad) #define KVM_ARM_VCPU_INIT _IOW(KVMIO, 0xae, struct kvm_vcpu_init) +#define KVM_ARM_PREFERRED_TARGET _IOR(KVMIO, 0xaf, struct kvm_vcpu_init) #define KVM_GET_REG_LIST _IOWR(KVMIO, 0xb0, struct kvm_reg_list) #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) |