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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2022-10-25 15:47:27 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-11-09 12:31:16 -0500 |
| commit | 07a368b3f55a79d33cad113d506b279e04fd2a00 (patch) | |
| tree | a5cc4f6daeedce9bdb81f08525650557fcb30874 /arch/x86/kvm/vmx/vmcs12.h | |
| parent | 00009406f0dbc53b95b9062c0cc297d6893ff394 (diff) | |
| download | linux-07a368b3f55a79d33cad113d506b279e04fd2a00.tar.bz2 | |
bug: introduce ASSERT_STRUCT_OFFSET
ASSERT_STRUCT_OFFSET allows to assert during the build of
the kernel that a field in a struct have an expected offset.
KVM used to have such macro, but there is almost nothing KVM specific
in it so move it to build_bug.h, so that it can be used in other
places in KVM.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221025124741.228045-10-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmcs12.h')
| -rw-r--r-- | arch/x86/kvm/vmx/vmcs12.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx/vmcs12.h b/arch/x86/kvm/vmx/vmcs12.h index 746129ddd5ae..01936013428b 100644 --- a/arch/x86/kvm/vmx/vmcs12.h +++ b/arch/x86/kvm/vmx/vmcs12.h @@ -208,9 +208,8 @@ struct __packed vmcs12 { /* * For save/restore compatibility, the vmcs12 field offsets must not change. */ -#define CHECK_OFFSET(field, loc) \ - BUILD_BUG_ON_MSG(offsetof(struct vmcs12, field) != (loc), \ - "Offset of " #field " in struct vmcs12 has changed.") +#define CHECK_OFFSET(field, loc) \ + ASSERT_STRUCT_OFFSET(struct vmcs12, field, loc) static inline void vmx_check_vmcs12_offsets(void) { |