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Re: [rfc][patch 2/3] x86: fix IO write barriers

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From: Andi Kleen <ak@...>
To: Dave Jones <davej@...>
Cc: Nick Piggin <npiggin@...>, Linux Kernel Mailing List <linux-kernel@...>, Linus Torvalds <torvalds@...>
Subject: Re: [rfc][patch 2/3] x86: fix IO write barriers
Date: Thursday, October 4, 2007 - 1:53 pm

> The only vendor that ever implemented OOSTOREs was Centaur, and they

Do you know if it made a big performance difference?

But yes we should probably just remove this special case to make 
maintenance easier.

-Andi
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Messages in current thread:
[rfc][patch 1/3] x86_64: fence nontemproal stores, Nick Piggin, (Thu Oct 4, 1:21 am)
[rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Thu Oct 4, 1:23 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 4:25 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Linus Torvalds, (Fri Oct 12, 11:13 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Mon Oct 15, 3:44 am)
RE: [rfc][patch 3/3] x86: optimise barriers, David Schwartz, (Mon Oct 15, 10:38 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Mon Oct 15, 4:09 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Mon Oct 15, 5:10 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Mon Oct 15, 8:50 pm)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Tue Oct 16, 5:00 am)
Re: [rfc][patch 3/3] x86: optimise barriers, , (Tue Oct 16, 5:14 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Tue Oct 16, 8:49 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Mon Oct 15, 5:24 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Fri Oct 12, 4:57 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 5:55 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Fri Oct 12, 6:42 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 7:55 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 8:10 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Helge Hafting, (Fri Oct 12, 4:42 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 5:12 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Helge Hafting, (Fri Oct 12, 8:44 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 9:29 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Helge Hafting, (Mon Oct 15, 6:17 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Mon Oct 15, 7:53 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Nick Piggin, (Fri Oct 12, 5:44 am)
Re: [rfc][patch 3/3] x86: optimise barriers, Jarek Poplawski, (Fri Oct 12, 6:04 am)
[rfc][patch 2/3] x86: fix IO write barriers, Nick Piggin, (Thu Oct 4, 1:22 am)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Dave Jones, (Thu Oct 4, 1:32 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Andi Kleen, (Thu Oct 4, 1:53 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Dave Jones, (Thu Oct 4, 2:10 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Andi Kleen, (Thu Oct 4, 2:21 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Dave Jones, (Thu Oct 4, 2:41 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Andi Kleen, (Thu Oct 4, 2:58 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Dave Jones, (Thu Oct 4, 3:08 pm)
Re: [rfc][patch 2/3] x86: fix IO write barriers, Alan Cox, (Thu Oct 4, 4:52 pm)