Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
 arch/x86/kvm/lapic.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 6f4ce25..d29da25 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -13,6 +13,11 @@ struct kvm_lapic {
        u32 divide_count;
        struct kvm_vcpu *vcpu;
        bool irr_pending;
+       /**
+        * APIC register page.  The layout matches the register layout seen by
+        * the guest 1:1, because it is accessed by the vmx microcode.
+        * Note: Only one register, the TPR, is used by the microcode.
+        */
        void *regs;
        gpa_t vapic_addr;
        struct page *vapic_page;
-- 
MST

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