Ejemplo n.º 1
0
dotraplinkage void
do_simd_coprocessor_error(struct pt_regs *regs, long error_code)
{
	conditional_sti(regs);

#ifdef CONFIG_X86_32
	if (cpu_has_xmm) {
		/* Handle SIMD FPU exceptions on PIII+ processors. */
		ignore_fpu_irq = 1;
		simd_math_error((void __user *)regs->ip);
		return;
	}
	/*
	 * Handle strange cache flush from user space exception
	 * in all other cases.  This is undocumented behaviour.
	 */
	if (regs->flags & X86_VM_MASK) {
		handle_vm86_fault((struct kernel_vm86_regs *)regs, error_code);
		return;
	}
	current->thread.trap_no = 19;
	current->thread.error_code = error_code;
	die_if_kernel("cache flush denied", regs, error_code);
	force_sig(SIGSEGV, current);
#else
	if (!user_mode(regs) &&
			kernel_math_error(regs, "kernel simd math error", 19))
		return;
	simd_math_error((void __user *)regs->ip);
#endif
}
Ejemplo n.º 2
0
dotraplinkage void
do_simd_coprocessor_error(struct pt_regs *regs, long error_code)
{
	conditional_sti(regs);

#ifdef CONFIG_X86_32
	ignore_fpu_irq = 1;
#else
	if (!user_mode(regs) &&
			kernel_math_error(regs, "kernel simd math error", 19))
		return;
#endif

	simd_math_error((void __user *)regs->ip);
}