| 1 | /* |
| 2 | * ltt/probes/kvm-trace.c |
| 3 | * |
| 4 | * KVM tracepoint probes. |
| 5 | * |
| 6 | * (C) Copyright 2010 - Julien Desfossez <julien.desfossez@polymtl.ca> |
| 7 | * Dual LGPL v2.1/GPL v2 license. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include <linux/module.h> |
| 12 | #include <asm/vmx.h> |
| 13 | #include <linux/kvm_host.h> |
| 14 | #include <asm/kvm-trace.h> |
| 15 | |
| 16 | void probe_kvm_entry(void *_data, unsigned int vcpu_id) |
| 17 | { |
| 18 | trace_mark_tp(kvm, kvm_entry, kvm_entry, |
| 19 | probe_kvm_entry, |
| 20 | "vcpu %u", |
| 21 | vcpu_id); |
| 22 | } |
| 23 | |
| 24 | void probe_kvm_hypercall(void *_data, unsigned long nr, unsigned long a0, |
| 25 | unsigned long a1, unsigned long a2, unsigned long a3) |
| 26 | { |
| 27 | trace_mark_tp(kvm, kvm_hypercall, kvm_hypercall, |
| 28 | probe_kvm_hypercall, |
| 29 | "nr 0x%lx a0 0x%lx a1 0x%lx a2 0x%lx a3 0x%lx", |
| 30 | nr, a0, a1, a2, a3); |
| 31 | } |
| 32 | |
| 33 | void probe_kvm_pio(void *_data, unsigned int rw, unsigned int port, |
| 34 | unsigned int size, unsigned int count) |
| 35 | { |
| 36 | trace_mark_tp(kvm, kvm_pio, kvm_pio, |
| 37 | probe_kvm_pio, |
| 38 | "pio_%s at 0x%x size %d count %d", |
| 39 | rw ? "write" : "read", |
| 40 | port, size, count); |
| 41 | } |
| 42 | |
| 43 | void probe_kvm_cpuid(void *_data, unsigned int function, unsigned long rax, |
| 44 | unsigned long rbx, unsigned long rcx, unsigned long rdx) |
| 45 | { |
| 46 | trace_mark_tp(kvm, kvm_cpuid, kvm_cpuid, |
| 47 | probe_kvm_cpuid, |
| 48 | "func %x rax %lx rbx %lx rcx %lx rdx %lx", |
| 49 | function, rax, rbx, rcx, rdx); |
| 50 | } |
| 51 | |
| 52 | void probe_kvm_apic (void *_data, unsigned int rw, unsigned int reg, |
| 53 | unsigned int val) |
| 54 | { |
| 55 | trace_mark_tp(kvm, kvm_apic, kvm_apic, |
| 56 | probe_kvm_apic, |
| 57 | "apic_%s reg %d = 0x%x", |
| 58 | rw ? "write" : "read", |
| 59 | reg, val); |
| 60 | } |
| 61 | |
| 62 | void probe_kvm_exit(void *_data, unsigned int exit_reason, struct kvm_vcpu *vcpu, u32 isa) |
| 63 | { |
| 64 | trace_mark_tp(kvm, kvm_exit, kvm_exit, |
| 65 | probe_kvm_exit, |
| 66 | "reason %d isa %u", |
| 67 | exit_reason, (unsigned int)isa); |
| 68 | } |
| 69 | |
| 70 | void probe_kvm_inj_virq(void *_data, unsigned int irq) |
| 71 | { |
| 72 | trace_mark_tp(kvm, kvm_inj_virq, kvm_inj_virq, |
| 73 | probe_kvm_inj_virq, |
| 74 | "irq %u", irq); |
| 75 | } |
| 76 | |
| 77 | void probe_kvm_page_fault(void *_data, unsigned long fault_address, |
| 78 | unsigned int error_code) |
| 79 | { |
| 80 | trace_mark_tp(kvm, kvm_page_fault, kvm_page_fault, |
| 81 | probe_kvm_page_fault, |
| 82 | "address %lx error_code %x", |
| 83 | fault_address, error_code); |
| 84 | } |
| 85 | |
| 86 | void probe_kvm_msr(void *_data, unsigned int rw, __u32 ecx, __u64 data, bool exception) |
| 87 | { |
| 88 | trace_mark_tp(kvm, kvm_msr, kvm_msr, |
| 89 | probe_kvm_msr, |
| 90 | "msr_%s %x = 0x%llx", |
| 91 | rw ? "read" : "write", |
| 92 | ecx, data); |
| 93 | } |
| 94 | |
| 95 | void probe_kvm_cr(void *_data, unsigned int rw, unsigned int cr, unsigned long val) |
| 96 | { |
| 97 | trace_mark_tp(kvm, kvm_cr, kvm_cr, |
| 98 | probe_kvm_cr, |
| 99 | "cr_%s %x = 0x%lx", |
| 100 | rw ? "read" : "write", |
| 101 | cr, val); |
| 102 | } |
| 103 | |
| 104 | void probe_kvm_pic_set_irq(void *_data, __u8 chip, __u8 pin, __u8 elcr, |
| 105 | __u8 imr, bool coalesced) |
| 106 | { |
| 107 | trace_mark_tp(kvm, kvm_pic_set_irq, kvm_pic_set_irq, |
| 108 | probe_kvm_pic_set_irq, |
| 109 | "chip %u pin %u (%s%s)%s", |
| 110 | chip, pin, |
| 111 | (elcr & (1 << pin)) ? "level":"edge", |
| 112 | (imr & (1 << pin)) ? "|masked":"", |
| 113 | coalesced ? " (coalesced)" : ""); |
| 114 | } |
| 115 | |
| 116 | void probe_kvm_apic_ipi(void *_data, __u32 icr_low, __u32 dest_id) |
| 117 | { |
| 118 | trace_mark_tp(kvm, kvm_apic_ipi, kvm_apic_ipi, |
| 119 | probe_kvm_apic_ipi, |
| 120 | "dst %x vec %u (%x|%s|%s|%s|%x)", |
| 121 | dest_id, icr_low, |
| 122 | icr_low >> 8 & 0x7, |
| 123 | (icr_low & (1<<11)) ? "logical" : "physical", |
| 124 | (icr_low & (1<<14)) ? "assert" : "de-assert", |
| 125 | (icr_low & (1<<15)) ? "level" : "edge", |
| 126 | icr_low >> 18 & 0x3); |
| 127 | } |
| 128 | |
| 129 | void probe_kvm_apic_accept_irq(void *_data, __u32 apicid, __u16 dm, __u8 tm, |
| 130 | __u8 vec, bool coalesced) |
| 131 | { |
| 132 | trace_mark_tp(kvm, kvm_apic_accept_irq, kvm_apic_accept_irq, |
| 133 | probe_kvm_apic_accept_irq, |
| 134 | "apicid %x vec %u (%x|%s)%s", |
| 135 | apicid, vec, dm >> 8 & 0x7, |
| 136 | tm ? "level" : "edge", |
| 137 | coalesced ? " (coalesced)" : ""); |
| 138 | } |
| 139 | |
| 140 | void probe_kvm_nested_vmrun(void *_data, __u64 rip, __u64 vmcb, __u64 nested_rip, |
| 141 | __u32 int_ctl, __u32 event_inj, bool npt) |
| 142 | { |
| 143 | trace_mark_tp(kvm, kvm_nested_vmrun, kvm_nested_vmrun, |
| 144 | probe_kvm_nested_vmrun, |
| 145 | "rip 0x%Lx vmcb 0x%Lx nrip 0x%Lx int_ctl 0x%x " |
| 146 | "event_inj 0x%x npt %s", |
| 147 | (unsigned long long)rip, |
| 148 | (unsigned long long)vmcb, |
| 149 | (unsigned long long)nested_rip, |
| 150 | int_ctl, event_inj, |
| 151 | npt ? "on" : "off"); |
| 152 | } |
| 153 | |
| 154 | void probe_kvm_nested_vmexit(void *_data, __u64 rip, __u32 exit_code, |
| 155 | __u64 exit_info1, __u64 exit_info2, |
| 156 | __u32 exit_int_info, __u32 exit_int_info_err) |
| 157 | { |
| 158 | trace_mark_tp(kvm, kvm_nested_vmexit, kvm_nested_vmexit, |
| 159 | probe_kvm_nested_vmexit, |
| 160 | "rip 0x%Lx reason %d ext_inf1 0x%Lx " |
| 161 | "ext_inf2 0x%Lx ext_int 0x%x ext_int_err 0x%x", |
| 162 | (unsigned long long)rip, |
| 163 | exit_code, |
| 164 | (unsigned long long)exit_info1, |
| 165 | (unsigned long long)exit_info2, |
| 166 | exit_int_info, exit_int_info_err); |
| 167 | } |
| 168 | |
| 169 | void probe_kvm_nested_vmexit_inject(void *_data, __u32 exit_code, |
| 170 | __u64 exit_info1, __u64 exit_info2, |
| 171 | __u32 exit_int_info, __u32 exit_int_info_err) |
| 172 | { |
| 173 | trace_mark_tp(kvm, kvm_nested_vmexit_inject, kvm_nested_vmexit_inject, |
| 174 | probe_kvm_nested_vmexit_inject, |
| 175 | "reason %d ext_inf1 0x%Lx " |
| 176 | "ext_inf2 0x%Lx ext_int 0x%x ext_int_err 0x%x", |
| 177 | exit_code, |
| 178 | (unsigned long long)exit_info1, |
| 179 | (unsigned long long)exit_info2, |
| 180 | exit_int_info, exit_int_info_err); |
| 181 | } |
| 182 | |
| 183 | void probe_kvm_nested_intr_vmexit(void *_data, __u64 rip) |
| 184 | { |
| 185 | trace_mark_tp(kvm, kvm_nested_intr_vmexit, kvm_nested_intr_vmexit, |
| 186 | probe_kvm_nested_intr_vmexit, |
| 187 | "rip 0x%Lx", (unsigned long long)rip ); |
| 188 | } |
| 189 | |
| 190 | void probe_kvm_invlpga(void *_data, __u64 rip, int asid, u64 address) |
| 191 | { |
| 192 | trace_mark_tp(kvm, kvm_invlpga, kvm_invlpga, |
| 193 | probe_kvm_invlpga, |
| 194 | "rip 0x%Lx asid %d address 0x%Lx", |
| 195 | (unsigned long long)rip, |
| 196 | asid, |
| 197 | (unsigned long long)address); |
| 198 | } |
| 199 | |
| 200 | void probe_kvm_skinit(void *_data, __u64 rip, __u32 slb) |
| 201 | { |
| 202 | trace_mark_tp(kvm, kvm_skinit, kvm_skinit, |
| 203 | probe_kvm_skinit, |
| 204 | "rip 0x%Lx slb 0x%x", |
| 205 | (unsigned long long)rip, slb); |
| 206 | } |
| 207 | |
| 208 | MODULE_LICENSE("GPL and additional rights"); |
| 209 | MODULE_AUTHOR("Julien Desfossez"); |
| 210 | MODULE_DESCRIPTION("KVM Tracepoint Probes"); |