Northwood P4's have one more bit in the CPUID processor info set: bit
31. Intel calls the feature PBE (Pending Break Enable).
The attached patch for the current BK kernel adds the necessary entry.
-- --------------. ,-. 444 Castro Street Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA Red Hat `--' drepper at redhat.com `---------------------------
--- /home/drepper/kernel/linux-2.5/arch/i386/kernel/cpu/proc.c-save 2002-12-29 01:24:52.000000000 -0800 +++ /home/drepper/kernel/linux-2.5/arch/i386/kernel/cpu/proc.c 2003-01-14 02:00:33.000000000 -0800 @@ -22,7 +22,7 @@ "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx", - "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL, + "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe", /* AMD-defined */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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