This patch fixes two little bugs in the IA32 machine check handler, it's against
2.2.17pre7.
The first bug is that the MC0_MISC is at address 403H, the second is that
wmb() as implemented in IA32 doesn't serialize, a lock on the bus as
given from mb() will serialize instead.
--- 2.2.18pre7/arch/i386/kernel/bluesmoke.c.~1~ Thu Sep 14 19:28:06 2000
+++ 2.2.18pre7/arch/i386/kernel/bluesmoke.c Sat Sep 16 17:59:02 2000
@@ -37,7 +37,7 @@
high&=~(1<<31);
if(high&(1<<27))
{
- rdmsr(0x402+i*4, alow, ahigh);
+ rdmsr(0x403+i*4, alow, ahigh);
printk("[%08x%08x]", alow, ahigh);
}
if(high&(1<<26))
@@ -49,7 +49,7 @@
/* Clear it */
wrmsr(0x401+i*4, 0UL, 0UL);
/* Serialize */
- wmb();
+ mb();
}
}
Andrea
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