diff options
| author | Xianglai Li <lixianglai@loongson.cn> | 2024-11-13 16:18:26 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-11-13 16:18:26 +0800 |
| commit | 948ccbd95016f50ce01df5eef9440eede3b8c713 (patch) | |
| tree | 2dbe0b50bc1383a2e6d2d1ee982a89b6d0a227c7 /include/trace/events | |
| parent | 2d5404caa8c7bb5c4e0435f94b28834ae5456623 (diff) | |
LoongArch: KVM: Add iocsr and mmio bus simulation in kernel
Add iocsr and mmio memory read and write simulation to the kernel. When
the VM accesses the device address space through iocsr instructions or
mmio, it does not need to return to the qemu user mode but can directly
completes the access in the kernel mode.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/kvm.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index 74e40d5d4af4..fc7d0f8ff078 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -236,6 +236,41 @@ TRACE_EVENT(kvm_mmio, __entry->len, __entry->gpa, __entry->val) ); +#define KVM_TRACE_IOCSR_READ_UNSATISFIED 0 +#define KVM_TRACE_IOCSR_READ 1 +#define KVM_TRACE_IOCSR_WRITE 2 + +#define kvm_trace_symbol_iocsr \ + { KVM_TRACE_IOCSR_READ_UNSATISFIED, "unsatisfied-read" }, \ + { KVM_TRACE_IOCSR_READ, "read" }, \ + { KVM_TRACE_IOCSR_WRITE, "write" } + +TRACE_EVENT(kvm_iocsr, + TP_PROTO(int type, int len, u64 gpa, void *val), + TP_ARGS(type, len, gpa, val), + + TP_STRUCT__entry( + __field( u32, type ) + __field( u32, len ) + __field( u64, gpa ) + __field( u64, val ) + ), + + TP_fast_assign( + __entry->type = type; + __entry->len = len; + __entry->gpa = gpa; + __entry->val = 0; + if (val) + memcpy(&__entry->val, val, + min_t(u32, sizeof(__entry->val), len)); + ), + + TP_printk("iocsr %s len %u gpa 0x%llx val 0x%llx", + __print_symbolic(__entry->type, kvm_trace_symbol_iocsr), + __entry->len, __entry->gpa, __entry->val) +); + #define kvm_fpu_load_symbol \ {0, "unload"}, \ {1, "load"} |