diff options
| author | Bibo Mao <maobibo@loongson.cn> | 2025-11-27 11:00:18 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-11-27 11:00:18 +0800 |
| commit | d84fe2f30b0a0cbe08260c00a84ffe42161c95ce (patch) | |
| tree | af0ca5d8c3e1198be0946d84634f3ad9aaf0183e /tools/testing/selftests/kvm/include | |
| parent | 1c5d3a1eab32db1ebb0d5d30736e9236e8a7014f (diff) | |
KVM: LoongArch: selftests: Add exception handler register interface
Add interrupt and exception handler register interface. When exception
happens, execute registered exception handler if exists, else report an
error.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'tools/testing/selftests/kvm/include')
| -rw-r--r-- | tools/testing/selftests/kvm/include/loongarch/processor.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/loongarch/processor.h b/tools/testing/selftests/kvm/include/loongarch/processor.h index f1bfc06a2264..a1930f28e044 100644 --- a/tools/testing/selftests/kvm/include/loongarch/processor.h +++ b/tools/testing/selftests/kvm/include/loongarch/processor.h @@ -84,6 +84,11 @@ #define LOONGARCH_CSR_EUEN 0x2 #define LOONGARCH_CSR_ECFG 0x4 #define LOONGARCH_CSR_ESTAT 0x5 /* Exception status */ +#define CSR_ESTAT_EXC_SHIFT 16 +#define CSR_ESTAT_EXC_WIDTH 6 +#define CSR_ESTAT_EXC (0x3f << CSR_ESTAT_EXC_SHIFT) +#define EXCCODE_INT 0 /* Interrupt */ +#define INT_TI 11 /* Timer interrupt*/ #define LOONGARCH_CSR_ERA 0x6 /* ERA */ #define LOONGARCH_CSR_BADV 0x7 /* Bad virtual address */ #define LOONGARCH_CSR_EENTRY 0xc @@ -155,6 +160,17 @@ struct ex_regs { #define PRMD_OFFSET_EXREGS offsetof(struct ex_regs, prmd) #define EXREGS_SIZE sizeof(struct ex_regs) +#define VECTOR_NUM 64 + +typedef void(*handler_fn)(struct ex_regs *); + +struct handlers { + handler_fn exception_handlers[VECTOR_NUM]; +}; + +void vm_init_descriptor_tables(struct kvm_vm *vm); +void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler); + static inline void cpu_relax(void) { asm volatile("nop" ::: "memory"); |