From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 14 Dec 2021 20:00:18 +0000 (-0500)
Subject: fix: KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info (v5.16)
X-Git-Tag: v2.12.7~4
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=71c2f6eda2efd25e33269f145294146595acca65;p=lttng-modules.git

fix: KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info (v5.16)

See upstream commit :

  commit 0a62a0319abb92c89a4f91c2dbfcaee4e47f37ca
  Author: David Edmondson <david.edmondson@oracle.com>
  Date:   Mon Sep 20 11:37:35 2021 +0100

    KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info

    Extend the get_exit_info static call to provide the reason for the VM
    exit. Modify relevant trace points to use this rather than extracting
    the reason in the caller.

Change-Id: I28903e658eb7cbfc6666e35ba4cffba5e49d1445
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/instrumentation/events/lttng-module/arch/x86/kvm/trace.h b/instrumentation/events/lttng-module/arch/x86/kvm/trace.h
index 4f131aa7..9a2f466a 100644
--- a/instrumentation/events/lttng-module/arch/x86/kvm/trace.h
+++ b/instrumentation/events/lttng-module/arch/x86/kvm/trace.h
@@ -115,7 +115,39 @@ LTTNG_TRACEPOINT_EVENT_MAP(kvm_apic, kvm_x86_apic,
 /*
  * Tracepoint for kvm guest exit:
  */
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,16,0))
+LTTNG_TRACEPOINT_EVENT_CODE_MAP(kvm_exit, kvm_x86_exit,
+	TP_PROTO(struct kvm_vcpu *vcpu, u32 isa),
+	TP_ARGS(vcpu, isa),
+
+	TP_locvar(
+		u32 reason;
+		u64 info1, info2;
+		u32 intr_info, error_code;
+	),
+
+	TP_code_pre(
+		kvm_x86_ops.get_exit_info(vcpu, &tp_locvar->reason,
+				&tp_locvar->info1,
+				&tp_locvar->info2,
+				&tp_locvar->intr_info,
+				&tp_locvar->error_code);
+	),
+
+	TP_FIELDS(
+		ctf_integer(u32, exit_reason, tp_locvar->reason)
+		ctf_integer(unsigned long, guest_rip, kvm_rip_read(vcpu))
+		ctf_integer(u32, isa, isa)
+		ctf_integer(u64, info1, tp_locvar->info1)
+		ctf_integer(u64, info2, tp_locvar->info2)
+		ctf_integer(u32, intr_info, tp_locvar->intr_info)
+		ctf_integer(u32, error_code, tp_locvar->error_code)
+		ctf_integer(unsigned int, vcpu_id, vcpu->vcpu_id)
+	),
+
+	TP_code_post()
+)
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,10,0))
 LTTNG_TRACEPOINT_EVENT_CODE_MAP(kvm_exit, kvm_x86_exit,
 	TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu, u32 isa),
 	TP_ARGS(exit_reason, vcpu, isa),