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Diffstat (limited to 'arch/x86/kvm/trace.h')
-rw-r--r--arch/x86/kvm/trace.h165
1 files changed, 154 insertions, 11 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 6ad30a29f044..a6544b8e7c0f 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -5,8 +5,6 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm
-#define TRACE_INCLUDE_PATH arch/x86/kvm
-#define TRACE_INCLUDE_FILE trace
/*
* Tracepoint for guest mode entry.
@@ -184,8 +182,8 @@ TRACE_EVENT(kvm_apic,
* Tracepoint for kvm guest exit:
*/
TRACE_EVENT(kvm_exit,
- TP_PROTO(unsigned int exit_reason, unsigned long guest_rip),
- TP_ARGS(exit_reason, guest_rip),
+ TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu),
+ TP_ARGS(exit_reason, vcpu),
TP_STRUCT__entry(
__field( unsigned int, exit_reason )
@@ -194,7 +192,7 @@ TRACE_EVENT(kvm_exit,
TP_fast_assign(
__entry->exit_reason = exit_reason;
- __entry->guest_rip = guest_rip;
+ __entry->guest_rip = kvm_rip_read(vcpu);
),
TP_printk("reason %s rip 0x%lx",
@@ -221,6 +219,38 @@ TRACE_EVENT(kvm_inj_virq,
TP_printk("irq %u", __entry->irq)
);
+#define EXS(x) { x##_VECTOR, "#" #x }
+
+#define kvm_trace_sym_exc \
+ EXS(DE), EXS(DB), EXS(BP), EXS(OF), EXS(BR), EXS(UD), EXS(NM), \
+ EXS(DF), EXS(TS), EXS(NP), EXS(SS), EXS(GP), EXS(PF), \
+ EXS(MF), EXS(MC)
+
+/*
+ * Tracepoint for kvm interrupt injection:
+ */
+TRACE_EVENT(kvm_inj_exception,
+ TP_PROTO(unsigned exception, bool has_error, unsigned error_code),
+ TP_ARGS(exception, has_error, error_code),
+
+ TP_STRUCT__entry(
+ __field( u8, exception )
+ __field( u8, has_error )
+ __field( u32, error_code )
+ ),
+
+ TP_fast_assign(
+ __entry->exception = exception;
+ __entry->has_error = has_error;
+ __entry->error_code = error_code;
+ ),
+
+ TP_printk("%s (0x%x)",
+ __print_symbolic(__entry->exception, kvm_trace_sym_exc),
+ /* FIXME: don't print error_code if not present */
+ __entry->has_error ? __entry->error_code : 0)
+);
+
/*
* Tracepoint for page fault.
*/
@@ -413,12 +443,34 @@ TRACE_EVENT(kvm_nested_vmrun,
),
TP_printk("rip: 0x%016llx vmcb: 0x%016llx nrip: 0x%016llx int_ctl: 0x%08x "
- "event_inj: 0x%08x npt: %s\n",
+ "event_inj: 0x%08x npt: %s",
__entry->rip, __entry->vmcb, __entry->nested_rip,
__entry->int_ctl, __entry->event_inj,
__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
*/
@@ -447,7 +499,7 @@ TRACE_EVENT(kvm_nested_vmexit,
__entry->exit_int_info_err = exit_int_info_err;
),
TP_printk("rip: 0x%016llx reason: %s ext_inf1: 0x%016llx "
- "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x\n",
+ "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",
__entry->rip,
ftrace_print_symbols_seq(p, __entry->exit_code,
kvm_x86_ops->exit_reasons_str),
@@ -482,7 +534,7 @@ TRACE_EVENT(kvm_nested_vmexit_inject,
),
TP_printk("reason: %s ext_inf1: 0x%016llx "
- "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x\n",
+ "ext_inf2: 0x%016llx ext_int: 0x%08x ext_int_err: 0x%08x",
ftrace_print_symbols_seq(p, __entry->exit_code,
kvm_x86_ops->exit_reasons_str),
__entry->exit_info1, __entry->exit_info2,
@@ -504,7 +556,7 @@ TRACE_EVENT(kvm_nested_intr_vmexit,
__entry->rip = rip
),
- TP_printk("rip: 0x%016llx\n", __entry->rip)
+ TP_printk("rip: 0x%016llx", __entry->rip)
);
/*
@@ -526,7 +578,7 @@ TRACE_EVENT(kvm_invlpga,
__entry->address = address;
),
- TP_printk("rip: 0x%016llx asid: %d address: 0x%016llx\n",
+ TP_printk("rip: 0x%016llx asid: %d address: 0x%016llx",
__entry->rip, __entry->asid, __entry->address)
);
@@ -547,11 +599,102 @@ TRACE_EVENT(kvm_skinit,
__entry->slb = slb;
),
- TP_printk("rip: 0x%016llx slb: 0x%08x\n",
+ TP_printk("rip: 0x%016llx slb: 0x%08x",
__entry->rip, __entry->slb)
);
+#define __print_insn(insn, ilen) ({ \
+ int i; \
+ const char *ret = p->buffer + p->len; \
+ \
+ for (i = 0; i < ilen; ++i) \
+ trace_seq_printf(p, " %02x", insn[i]); \
+ trace_seq_printf(p, "%c", 0); \
+ ret; \
+ })
+
+#define KVM_EMUL_INSN_F_CR0_PE (1 << 0)
+#define KVM_EMUL_INSN_F_EFL_VM (1 << 1)
+#define KVM_EMUL_INSN_F_CS_D (1 << 2)
+#define KVM_EMUL_INSN_F_CS_L (1 << 3)
+
+#define kvm_trace_symbol_emul_flags \
+ { 0, "real" }, \
+ { KVM_EMUL_INSN_F_CR0_PE \
+ | KVM_EMUL_INSN_F_EFL_VM, "vm16" }, \
+ { KVM_EMUL_INSN_F_CR0_PE, "prot16" }, \
+ { KVM_EMUL_INSN_F_CR0_PE \
+ | KVM_EMUL_INSN_F_CS_D, "prot32" }, \
+ { KVM_EMUL_INSN_F_CR0_PE \
+ | KVM_EMUL_INSN_F_CS_L, "prot64" }
+
+#define kei_decode_mode(mode) ({ \
+ u8 flags = 0xff; \
+ switch (mode) { \
+ case X86EMUL_MODE_REAL: \
+ flags = 0; \
+ break; \
+ case X86EMUL_MODE_VM86: \
+ flags = KVM_EMUL_INSN_F_EFL_VM; \
+ break; \
+ case X86EMUL_MODE_PROT16: \
+ flags = KVM_EMUL_INSN_F_CR0_PE; \
+ break; \
+ case X86EMUL_MODE_PROT32: \
+ flags = KVM_EMUL_INSN_F_CR0_PE \
+ | KVM_EMUL_INSN_F_CS_D; \
+ break; \
+ case X86EMUL_MODE_PROT64: \
+ flags = KVM_EMUL_INSN_F_CR0_PE \
+ | KVM_EMUL_INSN_F_CS_L; \
+ break; \
+ } \
+ flags; \
+ })
+
+TRACE_EVENT(kvm_emulate_insn,
+ TP_PROTO(struct kvm_vcpu *vcpu, __u8 failed),
+ TP_ARGS(vcpu, failed),
+
+ TP_STRUCT__entry(
+ __field( __u64, rip )
+ __field( __u32, csbase )
+ __field( __u8, len )
+ __array( __u8, insn, 15 )
+ __field( __u8, flags )
+ __field( __u8, failed )
+ ),
+
+ TP_fast_assign(
+ __entry->rip = vcpu->arch.emulate_ctxt.decode.fetch.start;
+ __entry->csbase = kvm_x86_ops->get_segment_base(vcpu, VCPU_SREG_CS);
+ __entry->len = vcpu->arch.emulate_ctxt.decode.eip
+ - vcpu->arch.emulate_ctxt.decode.fetch.start;
+ memcpy(__entry->insn,
+ vcpu->arch.emulate_ctxt.decode.fetch.data,
+ 15);
+ __entry->flags = kei_decode_mode(vcpu->arch.emulate_ctxt.mode);
+ __entry->failed = failed;
+ ),
+
+ TP_printk("%x:%llx:%s (%s)%s",
+ __entry->csbase, __entry->rip,
+ __print_insn(__entry->insn, __entry->len),
+ __print_symbolic(__entry->flags,
+ kvm_trace_symbol_emul_flags),
+ __entry->failed ? " failed" : ""
+ )
+ );
+
+#define trace_kvm_emulate_insn_start(vcpu) trace_kvm_emulate_insn(vcpu, 0)
+#define trace_kvm_emulate_insn_failed(vcpu) trace_kvm_emulate_insn(vcpu, 1)
+
#endif /* _TRACE_KVM_H */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH arch/x86/kvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
/* This part must be outside protection */
#include <trace/define_trace.h>
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.