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| author | David Edmondson <david.edmondson@oracle.com> | 2021-09-20 11:37:34 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-25 06:48:24 -0400 |
| commit | a9d496d8e08ca1eb43d14cb734839b24ab0e8083 (patch) | |
| tree | 006b7cc131512bef2d43149ecaf869c6cac2635a /include/uapi | |
| parent | ed290e1c20da19fa100a3e0f421aa31b65984960 (diff) | |
| download | linux-a9d496d8e08ca1eb43d14cb734839b24ab0e8083.tar.bz2 | |
KVM: x86: Clarify the kvm_run.emulation_failure structure layout
Until more flags for kvm_run.emulation_failure flags are defined, it
is undetermined whether new payload elements corresponding to those
flags will be additive or alternative. As a hint to userspace that an
alternative is possible, wrap the current payload elements in a union.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210920103737.2696756-2-david.edmondson@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/kvm.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 5ca5ffe16cb4..2c8aa8d4dac1 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -403,8 +403,12 @@ struct kvm_run { __u32 suberror; __u32 ndata; __u64 flags; - __u8 insn_size; - __u8 insn_bytes[15]; + union { + struct { + __u8 insn_size; + __u8 insn_bytes[15]; + }; + }; } emulation_failure; /* KVM_EXIT_OSI */ struct { |