bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-27 02:52:27 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: LoongArch: selftests: Add exception handler register interface

Browse Source 
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>
This commit is contained in:
Bibo Mao
2025-11-27 11:00:18 +08:00
committed by Huacai Chen
parent 1c5d3a1eab
commit d84fe2f30b
2 changed files with 45 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
tools/testing/selftests/kvm/include/loongarch/processor.h
View File

@@ -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");