diff options
Diffstat (limited to 'arch/x86/kernel/doublefault_32.c')
| -rw-r--r-- | arch/x86/kernel/doublefault_32.c | 69 | 
1 files changed, 0 insertions, 69 deletions
diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c deleted file mode 100644 index 37250fe490b..00000000000 --- a/arch/x86/kernel/doublefault_32.c +++ /dev/null @@ -1,69 +0,0 @@ -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/fs.h> - -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/desc.h> - -#define DOUBLEFAULT_STACKSIZE (1024) -static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; -#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) - -#define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) - -static void doublefault_fn(void) -{ -	struct desc_ptr gdt_desc = {0, 0}; -	unsigned long gdt, tss; - -	store_gdt(&gdt_desc); -	gdt = gdt_desc.address; - -	printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); - -	if (ptr_ok(gdt)) { -		gdt += GDT_ENTRY_TSS << 3; -		tss = get_desc_base((struct desc_struct *)gdt); -		printk(KERN_EMERG "double fault, tss at %08lx\n", tss); - -		if (ptr_ok(tss)) { -			struct x86_hw_tss *t = (struct x86_hw_tss *)tss; - -			printk(KERN_EMERG "eip = %08lx, esp = %08lx\n", -			       t->ip, t->sp); - -			printk(KERN_EMERG "eax = %08lx, ebx = %08lx, ecx = %08lx, edx = %08lx\n", -				t->ax, t->bx, t->cx, t->dx); -			printk(KERN_EMERG "esi = %08lx, edi = %08lx\n", -				t->si, t->di); -		} -	} - -	for (;;) -		cpu_relax(); -} - -struct tss_struct doublefault_tss __cacheline_aligned = { -	.x86_tss = { -		.sp0		= STACK_START, -		.ss0		= __KERNEL_DS, -		.ldt		= 0, -		.io_bitmap_base	= INVALID_IO_BITMAP_OFFSET, - -		.ip		= (unsigned long) doublefault_fn, -		/* 0x2 bit is always set */ -		.flags		= X86_EFLAGS_SF | 0x2, -		.sp		= STACK_START, -		.es		= __USER_DS, -		.cs		= __KERNEL_CS, -		.ss		= __KERNEL_DS, -		.ds		= __USER_DS, -		.fs		= __KERNEL_PERCPU, - -		.__cr3		= __pa_nodebug(swapper_pg_dir), -	} -};  | 
