i386: convert hardware exception 19 to an interrupt gate

Handle SIMD coprocessor exception with interrupt initially off.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index 54b89f497bac..1bd7960b1357 100644
--- a/arch/x86/kernel/traps_32.c
+++ b/arch/x86/kernel/traps_32.c
@@ -1144,6 +1144,8 @@ static void simd_math_error(void __user *ip)
 
 void do_simd_coprocessor_error(struct pt_regs *regs, long error_code)
 {
+        conditional_sti(regs);
+
         if (cpu_has_xmm) {
                 /* Handle SIMD FPU exceptions on PIII+ processors. */
                 ignore_fpu_irq = 1;
@@ -1294,7 +1296,7 @@ void __init trap_init(void)
 #ifdef CONFIG_X86_MCE
         set_intr_gate(18, &machine_check);
 #endif
-        set_trap_gate(19, &simd_coprocessor_error);
+        set_intr_gate(19, &simd_coprocessor_error);
 
         if (cpu_has_fxsr) {
                 printk(KERN_INFO "Enabling fast FPU save and restore... ");