KVM: SVM: Add kvm_nested_intercepts tracepoint
This patch adds a tracepoint to get information about the
most important intercept bitmasks from the nested vmcb.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 12f8d2d..17b52cc 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -419,6 +419,28 @@
__entry->npt ? "on" : "off")
);
+TRACE_EVENT(kvm_nested_intercepts,
+ TP_PROTO(__u16 cr_read, __u16 cr_write, __u32 exceptions, __u64 intercept),
+ TP_ARGS(cr_read, cr_write, exceptions, intercept),
+
+ TP_STRUCT__entry(
+ __field( __u16, cr_read )
+ __field( __u16, cr_write )
+ __field( __u32, exceptions )
+ __field( __u64, intercept )
+ ),
+
+ TP_fast_assign(
+ __entry->cr_read = cr_read;
+ __entry->cr_write = cr_write;
+ __entry->exceptions = exceptions;
+ __entry->intercept = intercept;
+ ),
+
+ TP_printk("cr_read: %04x cr_write: %04x excp: %08x intercept: %016llx",
+ __entry->cr_read, __entry->cr_write, __entry->exceptions,
+ __entry->intercept)
+);
/*
* Tracepoint for #VMEXIT while nested
*/