Messages in this thread Patch in this message | | | Date | Fri, 22 Oct 2010 11:52:09 -0700 | From | Greg KH <> | Subject | [095/103] x86: detect scattered cpuid features earlier |
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2.6.35-stable review patch. If anyone has any objections, please let us know.
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From: Jacob Pan <jacob.jun.pan@linux.intel.com>
commit 1dedefd1a066a795a87afca9c0236e1a94de9bf6 upstream.
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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/x86/kernel/cpu/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -576,6 +576,7 @@ void __cpuinit get_cpu_cap(struct cpuinf 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(s get_model_name(c); /* Default name */ - init_scattered_cpuid_features(c); detect_nopl(c); }
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