From: Alexander van Heukelum <heukelum@fastmail.fm>
Date: Tue, 9 Sep 2008 19:56:12 +0000 (+0200)
Subject: i386: convert hardware exception 19 to an interrupt gate
X-Git-Tag: v2.6.28-rc1~611^2~77
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=b939bde2788a7f16741e563ee90f6f3ad38935cf;p=linux-2.6-omap-h63xx.git

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>
---

diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index 54b89f497ba..1bd7960b135 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... ");