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KVM: x86: declare Xen HVM shared info capability and add test case

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Instead of adding a plethora of new KVM_CAP_XEN_FOO capabilities, just
add bits to the return value of KVM_CAP_XEN_HVM.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
This commit is contained in:
David Woodhouse
2020-12-04 01:02:04 +00:00
parent 40da8ccd72
commit 8d4e7e8083
4 changed files with 175 additions and 1 deletions
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3
include/uapi/linux/kvm.h
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@@ -1152,6 +1152,7 @@ struct kvm_x86_mce {
#ifdef KVM_CAP_XEN_HVM
#define KVM_XEN_HVM_CONFIG_HYPERCALL_MSR (1 << 0)
#define KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL (1 << 1)
#define KVM_XEN_HVM_CONFIG_SHARED_INFO (1 << 2)
struct kvm_xen_hvm_config {
__u32 flags;
@@ -1604,6 +1605,7 @@ struct kvm_xen_hvm_attr {
} u;
};
/* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_SHARED_INFO */
#define KVM_XEN_ATTR_TYPE_LONG_MODE 0x0
#define KVM_XEN_ATTR_TYPE_SHARED_INFO 0x1
#define KVM_XEN_ATTR_TYPE_UPCALL_VECTOR 0x2
@@ -1621,6 +1623,7 @@ struct kvm_xen_vcpu_attr {
} u;
};
/* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_SHARED_INFO */
#define KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO 0x0
#define KVM_XEN_VCPU_ATTR_TYPE_VCPU_TIME_INFO 0x1