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x86: detect scattered cpuid features earlier 

Some extra CPU features such as ARAT is needed in early boot so
that x86_init function pointers can be set up properly.
http://lkml.org/lkml/2010/5/18/519
At start_kernel() level, this patch moves init_scattered_cpuid_features()
from check_bugs() to setup_arch() -> early_cpu_init() which is earlier than
platform specific x86_init layer setup. Suggested by HPA.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
LKML-Reference: <1274295685-6774-2-git-send-email-jacob.jun.pan@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
hifive-unleashed-5.1
Jacob Pan 2010-05-19 12:01:23 -07:00 committed by H. Peter Anvin
parent 537b60d178
commit 1dedefd1a0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/common.c
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@ -576,6 +576,7 @@ static void __cpuinit get_cpu_cap(struct cpuinfo_x86 *c)
if (c->extended_cpuid_level >= 0x80000007)
c->x86_power = cpuid_edx(0x80000007);
init_scattered_cpuid_features(c);
}
static void __cpuinit identify_cpu_without_cpuid(struct cpuinfo_x86 *c)
@ -731,7 +732,6 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
get_model_name(c); /* Default name */
init_scattered_cpuid_features(c);
detect_nopl(c);
}