[PATCH v16 43/51] KVM: x86: Define AMD's #HV, #VC, and #SX exception vectors

Sean Christopherson
2025-09-19T22:34:22Z

Add {HV,CP,SX}_VECTOR definitions for AMD's Hypervisor Injection Exception,
VMM Communication Exception, and SVM Security Exception vectors, along with
human friendly formatting for trace_kvm_inj_exception().

Note, KVM is all but guaranteed to never observe or inject #SX, and #HV is
also unlikely to go unused. Add the architectural collateral mostly for
completeness, and on the off chance that hardware goes off the rails.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/include/uapi/asm/kvm.h | 4 ++++
arch/x86/kvm/trace.h | 3 ++-
2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
index 73e0e88a0a54..d420c9c066d4 100644
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
@@ -37,6 +37,10 @@
#define VE_VECTOR 20
#define CP_VECTOR 21

+#define HV_VECTOR 28
+#define VC_VECTOR 29
+#define SX_VECTOR 30
+
/* Select x86 specific features in <linux/kvm.h> */
#define __KVM_HAVE_PIT
#define __KVM_HAVE_IOAPIC
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 322913dda626..e79bc9cb7162 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -462,7 +462,8 @@ TRACE_EVENT(kvm_inj_virq,
#define kvm_trace_sym_exc \
EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM), \
EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF), EXS(MF), \
- EXS(AC), EXS(MC), EXS(XM), EXS(VE), EXS(CP)
+ EXS(AC), EXS(MC), EXS(XM), EXS(VE), EXS(CP), \
+ EXS(HV), EXS(VC), EXS(SX)

/*
* Tracepoint for kvm interrupt injection:
--
2.51.0.470.ga7dc726c21-goog