-stable review patch. If anyone has any objections, please let us know.
------------------
early_cpu_detect only runs on the BP, but this code needs to run
on all CPUs. This will fix problems with the powernow-k8 driver
on dual core systems and general misdetection of AMD dual core.
Looks like a mismerge somewhere. Also add a warning comment.
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/i386/kernel/cpu/common.c | 17 ++++++++++-------
1 files changed, 10 insertions(+), 7 deletions(-)
--- linux-2.6.15.4.orig/arch/i386/kernel/cpu/common.c
+++ linux-2.6.15.4/arch/i386/kernel/cpu/common.c
@@ -207,7 +207,10 @@ static int __devinit have_cpuid_p(void)
/* Do minimum CPU detection early.
Fields really needed: vendor, cpuid_level, family, model, mask, cache alignment.
- The others are not touched to avoid unwanted side effects. */
+ The others are not touched to avoid unwanted side effects.
+
+ WARNING: this function is only called on the BP. Don't add code here
+ that is supposed to run on all CPUs. */
static void __init early_cpu_detect(void)
{
struct cpuinfo_x86 *c = &boot_cpu_data;
@@ -239,12 +242,6 @@ static void __init early_cpu_detect(void
if (cap0 & (1<<19))
c->x86_cache_alignment = ((misc >> 8) & 0xff) * 8;
}
-
- early_intel_workaround(c);
-
-#ifdef CONFIG_X86_HT
- phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
-#endif
}
void __devinit generic_identify(struct cpuinfo_x86 * c)
@@ -292,6 +289,12 @@ void __devinit generic_identify(struct c
get_model_name(c); /* Default name */
}
}
+
+ early_intel_workaround(c);
+
+#ifdef CONFIG_X86_HT
+ phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
+#endif
}
static void __devinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
--
-
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