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Re: [tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL

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From: H. Peter Anvin
Subject: Re: [tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL
Date: Tuesday, October 5, 2010 - 9:30 am

On 10/5/2010 2:47 AM, Borislav Petkov wrote:

What is the flaw that justifies it for stable, or even .36?  It seems 
relatively harmless, with at most a very minor performance issue, unless 
I'm missing something?

	-hpa

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Messages in current thread:
NOPL on 32-bit, Borislav Petkov, (Sun Oct 3, 2:37 am)
Re: NOPL on 32-bit, H. Peter Anvin, (Sun Oct 3, 7:43 am)
[PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled on 3 ..., Borislav Petkov, (Sun Oct 3, 8:22 am)
Re: [PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled ..., H. Peter Anvin, (Sun Oct 3, 11:19 am)
Re: [PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled ..., Borislav Petkov, (Sun Oct 3, 1:11 pm)
Re: [PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled ..., H. Peter Anvin, (Sun Oct 3, 3:22 pm)
[PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Borislav Petkov, (Mon Oct 4, 12:31 am)
[tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL, tip-bot for Borislav ..., (Mon Oct 4, 1:36 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Linus Torvalds, (Mon Oct 4, 1:47 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Mon Oct 4, 2:02 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Linus Torvalds, (Mon Oct 4, 2:12 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Mon Oct 4, 2:21 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Borislav Petkov, (Mon Oct 4, 2:48 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Mon Oct 4, 2:50 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Mon Oct 4, 2:53 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Hugh Dickins, (Mon Oct 4, 3:17 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Mon Oct 4, 3:19 pm)
Re: [PATCH] x86, cpu: Fix X86_FEATURE_NOPL, Borislav Petkov, (Mon Oct 4, 11:19 pm)
Re: [tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL, Borislav Petkov, (Tue Oct 5, 2:47 am)
Re: [tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL, H. Peter Anvin, (Tue Oct 5, 9:30 am)
Re: [tip:x86/cpu] x86, cpu: Fix X86_FEATURE_NOPL, Borislav Petkov, (Tue Oct 5, 9:53 am)