diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 965c6f1706d6..a1f57fcb1bdb 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1850,6 +1850,8 @@ static void perform_access(struct kvm_vcpu *vcpu, struct sys_reg_params *params, const struct sys_reg_desc *r) { + trace_kvm_sys_access(*vcpu_pc(vcpu), params, r); + /* * Not having an accessor means that we have configured a trap * that we don't know how to handle. This certainly qualifies diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h index cd710f8b63e0..3b1bc7f01d0b 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -35,6 +35,9 @@ struct sys_reg_params { }; struct sys_reg_desc { + /* Sysreg string for debug */ + const char *name; + /* MRS/MSR instruction which accesses it. */ u8 Op0; u8 Op1; @@ -130,6 +133,7 @@ const struct sys_reg_desc *find_reg_by_id(u64 id, #define Op2(_x) .Op2 = _x #define SYS_DESC(reg) \ + .name = #reg, \ Op0(sys_reg_Op0(reg)), Op1(sys_reg_Op1(reg)), \ CRn(sys_reg_CRn(reg)), CRm(sys_reg_CRm(reg)), \ Op2(sys_reg_Op2(reg)) diff --git a/arch/arm64/kvm/trace.h b/arch/arm64/kvm/trace.h index 3b82fb1ddd09..eab91ad0effb 100644 --- a/arch/arm64/kvm/trace.h +++ b/arch/arm64/kvm/trace.h @@ -3,6 +3,7 @@ #define _TRACE_ARM64_KVM_H #include +#include "sys_regs.h" #undef TRACE_SYSTEM #define TRACE_SYSTEM kvm @@ -152,6 +153,40 @@ TRACE_EVENT(kvm_handle_sys_reg, TP_printk("HSR 0x%08lx", __entry->hsr) ); +TRACE_EVENT(kvm_sys_access, + TP_PROTO(unsigned long vcpu_pc, struct sys_reg_params *params, const struct sys_reg_desc *reg), + TP_ARGS(vcpu_pc, params, reg), + + TP_STRUCT__entry( + __field(unsigned long, vcpu_pc) + __field(bool, is_write) + __field(const char *, name) + __field(u8, Op0) + __field(u8, Op1) + __field(u8, CRn) + __field(u8, CRm) + __field(u8, Op2) + ), + + TP_fast_assign( + __entry->vcpu_pc = vcpu_pc; + __entry->is_write = params->is_write; + __entry->name = reg->name; + __entry->Op0 = reg->Op0; + __entry->Op0 = reg->Op0; + __entry->Op1 = reg->Op1; + __entry->CRn = reg->CRn; + __entry->CRm = reg->CRm; + __entry->Op2 = reg->Op2; + ), + + TP_printk("PC: %lx %s (%d,%d,%d,%d,%d) %s", + __entry->vcpu_pc, __entry->name ?: "UNKN", + __entry->Op0, __entry->Op1, __entry->CRn, + __entry->CRm, __entry->Op2, + __entry->is_write ? "write" : "read") +); + TRACE_EVENT(kvm_set_guest_debug, TP_PROTO(struct kvm_vcpu *vcpu, __u32 guest_debug), TP_ARGS(vcpu, guest_debug),