Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/winchip.c b/arch/x86/kernel/cpu/mcheck/winchip.c
new file mode 100644
index 00000000000..9e424b6c293
--- /dev/null
+++ b/arch/x86/kernel/cpu/mcheck/winchip.c
@@ -0,0 +1,36 @@
+/*
+ * IDT Winchip specific Machine Check Exception Reporting
+ * (C) Copyright 2002 Alan Cox <alan@redhat.com>
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+
+#include <asm/processor.h> 
+#include <asm/system.h>
+#include <asm/msr.h>
+
+#include "mce.h"
+
+/* Machine check handler for WinChip C6 */
+static fastcall void winchip_machine_check(struct pt_regs * regs, long error_code)
+{
+	printk(KERN_EMERG "CPU0: Machine Check Exception.\n");
+	add_taint(TAINT_MACHINE_CHECK);
+}
+
+/* Set up machine check reporting on the Winchip C6 series */
+void winchip_mcheck_init(struct cpuinfo_x86 *c)
+{
+	u32 lo, hi;
+	machine_check_vector = winchip_machine_check;
+	wmb();
+	rdmsr(MSR_IDT_FCR1, lo, hi);
+	lo|= (1<<2);	/* Enable EIERRINT (int 18 MCE) */
+	lo&= ~(1<<4);	/* Enable MCE */
+	wrmsr(MSR_IDT_FCR1, lo, hi);
+	set_in_cr4(X86_CR4_MCE);
+	printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n");
+}