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Diffstat (limited to 'tools/testing/selftests/kvm/include/x86/processor.h')
-rw-r--r--tools/testing/selftests/kvm/include/x86/processor.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h
index 488d516c4f6f..efcc4b1de523 100644
--- a/tools/testing/selftests/kvm/include/x86/processor.h
+++ b/tools/testing/selftests/kvm/include/x86/processor.h
@@ -1179,6 +1179,12 @@ struct idt_entry {
void vm_install_exception_handler(struct kvm_vm *vm, int vector,
void (*handler)(struct ex_regs *));
+/*
+ * Exception fixup morphs #DE to an arbitrary magic vector so that '0' can be
+ * used to signal "no expcetion".
+ */
+#define KVM_MAGIC_DE_VECTOR 0xff
+
/* If a toddler were to say "abracadabra". */
#define KVM_EXCEPTION_MAGIC 0xabacadabaULL