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authorChristoffer Dall <christoffer.dall@arm.com>2018-12-03 21:31:24 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2018-12-19 17:47:06 +0000
commit71a7e47f39a2fb971ef9934e98ba089581eff641 (patch)
treeb03f1246a444c076d9f10e6e983715aa2c7ec690 /virt
parent9009782a4937ad0f4a4be6945080d7fa77fa4092 (diff)
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KVM: arm/arm64: Fixup the kvm_exit tracepoint
The kvm_exit tracepoint strangely always reported exits as being IRQs. This seems to be because either the __print_symbolic or the tracepoint macros use a variable named idx. Take this chance to update the fields in the tracepoint to reflect the concepts in the arm64 architecture that we pass to the tracepoint and move the exception type table to the same location and header files as the exits code. We also clear out the exception code to 0 for IRQ exits (which translates to UNKNOWN in text) to make it slighyly less confusing to parse the trace output. Signed-off-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/trace.h18
1 files changed, 9 insertions, 9 deletions
diff --git a/virt/kvm/arm/trace.h b/virt/kvm/arm/trace.h
index 57b3edebbb40..f21f04f8036d 100644
--- a/virt/kvm/arm/trace.h
+++ b/virt/kvm/arm/trace.h
@@ -26,25 +26,25 @@ TRACE_EVENT(kvm_entry,
);
TRACE_EVENT(kvm_exit,
- TP_PROTO(int idx, unsigned int exit_reason, unsigned long vcpu_pc),
- TP_ARGS(idx, exit_reason, vcpu_pc),
+ TP_PROTO(int ret, unsigned int esr_ec, unsigned long vcpu_pc),
+ TP_ARGS(ret, esr_ec, vcpu_pc),
TP_STRUCT__entry(
- __field( int, idx )
- __field( unsigned int, exit_reason )
+ __field( int, ret )
+ __field( unsigned int, esr_ec )
__field( unsigned long, vcpu_pc )
),
TP_fast_assign(
- __entry->idx = idx;
- __entry->exit_reason = exit_reason;
+ __entry->ret = ARM_EXCEPTION_CODE(ret);
+ __entry->esr_ec = (ARM_EXCEPTION_CODE(ret) == ARM_EXCEPTION_TRAP) ? esr_ec : 0;
__entry->vcpu_pc = vcpu_pc;
),
TP_printk("%s: HSR_EC: 0x%04x (%s), PC: 0x%08lx",
- __print_symbolic(__entry->idx, kvm_arm_exception_type),
- __entry->exit_reason,
- __print_symbolic(__entry->exit_reason, kvm_arm_exception_class),
+ __print_symbolic(__entry->ret, kvm_arm_exception_type),
+ __entry->esr_ec,
+ __print_symbolic(__entry->esr_ec, kvm_arm_exception_class),
__entry->vcpu_pc)
);