i386: convert hardware exception 16 to an interrupt gate
authorAlexander van Heukelum <heukelum@fastmail.fm>
Tue, 9 Sep 2008 19:56:09 +0000 (21:56 +0200)
committerIngo Molnar <mingo@elte.hu>
Mon, 13 Oct 2008 08:20:33 +0000 (10:20 +0200)
Handle coprocessor error exception with interrupt initially off.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/traps_32.c

index 0039856b6344380c4dc6830d0ef7f287d764ec47..5ab4c3fc7c1da9c810659ac5ae8db64bc6ab7004 100644 (file)
@@ -1088,6 +1088,7 @@ void math_error(void __user *ip)
 
 void do_coprocessor_error(struct pt_regs *regs, long error_code)
 {
+       conditional_sti(regs);
        ignore_fpu_irq = 1;
        math_error((void __user *)regs->ip);
 }
@@ -1279,7 +1280,7 @@ void __init trap_init(void)
        set_intr_gate(13, &general_protection);
        set_intr_gate(14, &page_fault);
        set_intr_gate(15, &spurious_interrupt_bug);
-       set_trap_gate(16, &coprocessor_error);
+       set_intr_gate(16, &coprocessor_error);
        set_trap_gate(17, &alignment_check);
 #ifdef CONFIG_X86_MCE
        set_trap_gate(18, &machine_check);