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Commit 17897f36 authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

KVM: SVM: Add tracepoint for injected #vmexit 



This patch adds a tracepoint for a nested #vmexit that gets
re-injected to the guest.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent d8cabddf

arch/x86/kvm/svm.c

+6 −0
Original line number Diff line number Diff line
@@ -1592,6 +1592,12 @@ static int nested_svm_vmexit(struct vcpu_svm *svm) 
	struct vmcb *hsave = svm->nested.hsave;

	struct vmcb *vmcb = svm->vmcb;



	trace_kvm_nested_vmexit_inject(vmcb->control.exit_code,

				       vmcb->control.exit_info_1,

				       vmcb->control.exit_info_2,

				       vmcb->control.exit_int_info,

				       vmcb->control.exit_int_info_err);



	nested_vmcb = nested_svm_map(svm, svm->nested.vmcb, KM_USER0);

	if (!nested_vmcb)

		return 1;

arch/x86/kvm/trace.h

+33 −0
Original line number Diff line number Diff line
@@ -418,6 +418,39 @@ TRACE_EVENT(kvm_nested_vmexit, 
		  __entry->exit_int_info, __entry->exit_int_info_err)

);



/*

 * Tracepoint for #VMEXIT reinjected to the guest

 */

TRACE_EVENT(kvm_nested_vmexit_inject,

	    TP_PROTO(__u32 exit_code,

		     __u64 exit_info1, __u64 exit_info2,

		     __u32 exit_int_info, __u32 exit_int_info_err),

	    TP_ARGS(exit_code, exit_info1, exit_info2,

		    exit_int_info, exit_int_info_err),



	TP_STRUCT__entry(

		__field(	__u32,		exit_code		)

		__field(	__u64,		exit_info1		)

		__field(	__u64,		exit_info2		)

		__field(	__u32,		exit_int_info		)

		__field(	__u32,		exit_int_info_err	)

	),



	TP_fast_assign(

		__entry->exit_code		= exit_code;

		__entry->exit_info1		= exit_info1;

		__entry->exit_info2		= exit_info2;

		__entry->exit_int_info		= exit_int_info;

		__entry->exit_int_info_err	= exit_int_info_err;

	),



	TP_printk("reason: %s ext_inf1: 0x%016llx "

		  "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x\n",

		  ftrace_print_symbols_seq(p, __entry->exit_code,

					   kvm_x86_ops->exit_reasons_str),

		__entry->exit_info1, __entry->exit_info2,

		__entry->exit_int_info, __entry->exit_int_info_err)

);

#endif /* _TRACE_KVM_H */



/* This part must be outside protection */

arch/x86/kvm/x86.c

+1 −0
Original line number Diff line number Diff line
@@ -4986,3 +4986,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr); 
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_cr);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmrun);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit_inject);