For implementing CPU=host, we need a mechanism for querying VCPU target type suitable to underlying Host.
This patch implements KVM_ARM_SUITABLE_TARGET ioctl which return output of kvm_arm_target() to user space for KVM ARM and KVM ARM64.
Signed-off-by: Anup Patel anup.patel@linaro.org Signed-off-by: Pranavkumar Sawargaonkar pranavkumar@linaro.org --- arch/arm/kvm/arm.c | 2 ++ include/uapi/linux/kvm.h | 1 + 2 files changed, 3 insertions(+)
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 9c697db..4bdc2e1 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -715,6 +715,8 @@ long kvm_arch_vcpu_ioctl(struct file *filp, return kvm_vcpu_set_target(vcpu, &init);
} + case KVM_ARM_SUITABLE_TARGET: + return kvm_target_cpu(); case KVM_SET_ONE_REG: case KVM_GET_ONE_REG: { struct kvm_one_reg reg; diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 99c2533..8285daa 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_SUITABLE_TARGET _IO(KVMIO, 0xaf) #define KVM_GET_REG_LIST _IOWR(KVMIO, 0xb0, struct kvm_reg_list)
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)