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Re: [PATCH] x86: create array based interface to change page attribute

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From: Andi Kleen <andi@...>
To: Dave Airlie <airlied@...>
Cc: <linux-kernel@...>, <tglx@...>, <mingo@...>, <arjan@...>, <thomas@...>
Subject: Re: [PATCH] x86: create array based interface to change page attribute
Date: Monday, March 31, 2008 - 3:25 am

Dave Airlie <airlied@redhat.com> writes:

I don't think CPA_ARRAY should be a separate case. Rather single
page flushing should be an array with only a single entry. pageattr
is already very complex, no need to make add more special cases.

Also it is doubtful clflush really makes sense on a large array. Just
doing wbinvd might be faster then. Or perhaps better supporting Self-Snoop
should be revisited, that would at least eliminate it on most Intel 
CPUs.

-Andi
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Messages in current thread:
[PATCH] x86: create array based interface to change page att..., Dave Airlie, (Mon Mar 31, 1:19 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Tue Apr 1, 2:20 pm)
Re: [PATCH] x86: create array based interface to change page..., Andi Kleen, (Mon Mar 31, 3:25 am)
Re: [PATCH] x86: create array based interface to change page..., Dave Airlie, (Mon Mar 31, 7:21 am)
Re: [PATCH] x86: create array based interface to change page..., Andi Kleen, (Mon Mar 31, 7:46 am)
Re: [PATCH] x86: create array based interface to change page..., Dave Airlie, (Tue Apr 1, 9:35 pm)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Mar 31, 5:56 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 3:55 am)
Re: [PATCH] x86: create array based interface to change page..., Andi Kleen, (Mon Mar 31, 4:38 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 5:06 am)
Re: [PATCH] x86: create array based interface to change page..., Andi Kleen, (Mon Mar 31, 5:18 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 7:10 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Mar 31, 12:08 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 12:41 pm)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Mar 31, 12:49 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 1:26 pm)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Tue Apr 1, 4:58 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Tue Apr 1, 5:29 pm)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Tue Apr 1, 6:30 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Wed Apr 2, 2:30 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Wed Apr 2, 2:35 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Wed Apr 2, 2:59 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Wed Apr 2, 10:01 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Wed Apr 2, 1:57 pm)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Mon Apr 7, 2:23 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Apr 7, 3:51 pm)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Mon Apr 7, 3:59 pm)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Apr 7, 4:56 pm)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Mon Apr 7, 5:02 pm)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Mon Apr 7, 5:09 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Apr 7, 4:46 pm)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Mon Apr 7, 5:04 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Tue Apr 8, 2:21 am)
Re: [PATCH] x86: create array based interface to change page..., Jesse Barnes, (Tue Apr 8, 10:27 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Apr 7, 4:57 pm)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Tue Apr 8, 2:12 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 2:54 am)
Re: [PATCH] x86: create array based interface to change page..., Arjan van de Ven, (Mon Mar 31, 5:33 am)
Re: [PATCH] x86: create array based interface to change page..., Thomas Hellström, (Mon Mar 31, 7:04 am)