3 files changed, 8 insertions, 10 deletions
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index bd1dbf3bd223..a22a866de8f9 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -726,15 +726,11 @@ __setup("apic=", apic_set_verbosity);
 static int __init detect_init_APIC (void)
 {
 	u32 h, l, features;
-	extern void get_cpu_vendor(struct cpuinfo_x86*);
 
 	/* Disabled by kernel option? */
 	if (enable_local_apic < 0)
 		return -1;
 
-	/* Workaround for us being called before identify_cpu(). */
-	get_cpu_vendor(&boot_cpu_data);
-
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_AMD:
 		if ((boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model > 1) ||
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index da6c46d667cb..8c242bb1ef45 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -195,7 +195,7 @@ static void disable_lapic_nmi_watchdog(void)
 			wrmsr(MSR_P6_EVNTSEL0, 0, 0);
 			break;
 		case 15:
-			if (boot_cpu_data.x86_model > 0x3)
+			if (boot_cpu_data.x86_model > 0x4)
 				break;
 
 			wrmsr(MSR_P4_IQ_CCCR0, 0, 0);
@@ -432,7 +432,7 @@ void setup_apic_nmi_watchdog (void)
 			setup_p6_watchdog();
 			break;
 		case 15:
-			if (boot_cpu_data.x86_model > 0x3)
+			if (boot_cpu_data.x86_model > 0x4)
 				return;
 
 			if (!setup_p4_watchdog())
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index a61f33d06ea3..cd2d5d5514fe 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -803,15 +803,17 @@ void math_error(void __user *eip)
 	 */
 	cwd = get_fpu_cwd(task);
 	swd = get_fpu_swd(task);
-	switch (((~cwd) & swd & 0x3f) | (swd & 0x240)) {
+	switch (swd & ~cwd & 0x3f) {
 		case 0x000:
 		default:
 			break;
 		case 0x001: /* Invalid Op */
-		case 0x041: /* Stack Fault */
-		case 0x241: /* Stack Fault | Direction */
+			/*
+			 * swd & 0x240 == 0x040: Stack Underflow
+			 * swd & 0x240 == 0x240: Stack Overflow
+			 * User must clear the SF bit (0x40) if set
+			 */
 			info.si_code = FPE_FLTINV;
-			/* Should we clear the SF or let user space do it ???? */
 			break;
 		case 0x002: /* Denormalize */
 		case 0x010: /* Underflow */