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@xxxxxxxxxx>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>
---
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)
--
1.7.9.5
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