diff options
| -rw-r--r-- | arch/x86_64/kernel/head.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/head.S b/arch/x86_64/kernel/head.S index b6d8725..9bd2e7a 100644 --- a/arch/x86_64/kernel/head.S +++ b/arch/x86_64/kernel/head.S @@ -200,14 +200,22 @@ init_rsp: .quad init_thread_union+THREAD_SIZE-8 ENTRY(early_idt_handler) + cmpl $2,early_recursion_flag(%rip) + jz 1f + incl early_recursion_flag(%rip) xorl %eax,%eax movq 8(%rsp),%rsi # get rip movq (%rsp),%rdx movq %cr2,%rcx leaq early_idt_msg(%rip),%rdi call early_printk + cmpl $2,early_recursion_flag(%rip) + jz 1f + call dump_stack 1: hlt jmp 1b +early_recursion_flag: + .long 0 early_idt_msg: .asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n" |