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Re: [PATCH] x86_64: check if Tom2 is enabled

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From: Andi Kleen <ak@...>
To: H. Peter Anvin <hpa@...>
Cc: Cyrill Gorcunov <gorcunov@...>, Yinghai Lu <Yinghai.Lu@...>, Ingo Molnar <mingo@...>, LKML <linux-kernel@...>, Jesse Barnes <jesse.barnes@...>, Andrew Morton <akpm@...>
Subject: Re: [PATCH] x86_64: check if Tom2 is enabled
Date: Monday, January 21, 2008 - 2:46 pm

> 

Even if there are different fields in there it is still much cleaner
and simpler if there is only a single number to manipulate.


It's merely an implementation detail of the instruction. But even on 32bit
there is about zero reason to expose that to C code. rdmsr/wrmsr et.al. should
have been defined as 64bit only interface in Linux from day zero.

-Andi
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Messages in current thread:
[PATCH] x86: disable_mtrr_trim only need for x86_64, Yinghai Lu, (Sun Jan 20, 12:45 am)
Re: [PATCH] x86: disable_mtrr_trim only need for x86_64, H. Peter Anvin, (Sun Jan 20, 1:37 am)
Re: [PATCH] x86: disable_mtrr_trim only need for x86_64, Yinghai Lu, (Sun Jan 20, 2:55 am)
[PATCH] x86_64: update e820 instead of updating end_pfn, Yinghai Lu, (Sun Jan 20, 4:17 am)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn, Ingo Molnar, (Sun Jan 20, 5:20 am)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn, Yinghai Lu, (Sun Jan 20, 8:00 pm)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn, Andi Kleen, (Sun Jan 20, 11:08 am)
[PATCH] x86_64: update e820 instead of updating end_pfn v2, Yinghai Lu, (Mon Jan 21, 1:40 am)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn v2, Andi Kleen, (Mon Jan 21, 1:58 am)
[PATCH] x86_64: check if Tom2 is enabled, Yinghai Lu, (Mon Jan 21, 2:57 am)
Re: [PATCH] x86_64: check if Tom2 is enabled, Cyrill Gorcunov, (Mon Jan 21, 1:24 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, Andi Kleen, (Mon Jan 21, 2:03 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, Cyrill Gorcunov, (Mon Jan 21, 2:09 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, H. Peter Anvin, (Mon Jan 21, 2:15 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, Andi Kleen, (Mon Jan 21, 2:46 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, H. Peter Anvin, (Mon Jan 21, 1:39 pm)
Re: [PATCH] x86_64: check if Tom2 is enabled, Cyrill Gorcunov, (Mon Jan 21, 1:49 pm)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn v2, Harvey Harrison, (Mon Jan 21, 2:05 am)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn v2, Andi Kleen, (Mon Jan 21, 2:08 am)
Re: [PATCH] x86_64: update e820 instead of updating end_pfn v2, Li Zefan, (Mon Jan 21, 2:14 am)
[PATCH] x86_32: trim memory by updating e820, Yinghai Lu, (Mon Jan 21, 1:44 am)