linux-kernel - Re: [PATCH 2/2] x86: calling early_init_xxx in init

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Date:	Sat, 6 Sep 2008 14:09:54 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] x86: calling early_init_xxx in init_xxx


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> so
> 1. could set some cap to ap
> 2. restore some cap after memset in identify_cpu for boot cpu
> 
> esp for CONSTANT_TSC
> 
> before this patch:
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow rep_good nopl pni monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
> 
> after this patch:
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl pni monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
> 
> constant_tsc is back...

applied to tip/x86/unify-cpu-detect, thanks Yinghai.

	Ingo
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