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From: Zachary Amsden <zach@vmware.com>
To: Gerd Knorr <kraxel@suse.de>
Cc: Linus Torvalds <torvalds@osdl.org>, Dave Jones <davej@redhat.com>,
	Pavel Machek <pavel@ucw.cz>, Andrew Morton <akpm@osdl.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Zwane Mwaikambo <zwane@arm.linux.org.uk>,
	Pratap Subrahmanyam <pratap@vmware.com>,
	Christopher Li <chrisl@vmware.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 1/10] Cr4 is valid on some 486s
Date: Tue, 15 Nov 2005 08:04:32 -0800	[thread overview]
Message-ID: <437A0710.4020107@vmware.com> (raw)
In-Reply-To: <437A0649.7010702@suse.de>

Gerd Knorr wrote:

>> Yep, extending alternatives is probably better than duplicating the 
>> code.  Maybe having some alternative_smp() macro which places both 
>> code versions into the .altinstr_replacement table?  If that sounds 
>> ok I'll try to come up with a experimental patch.
>
>
> i.e. something like this (as basic idea, patch is far away from doing 
> anything useful ...)?


You still need to preserve the originals so that you can patch in both 
directions.  In the dynamic scenario, you need a multi-way set of 
alternatives, with the most conservative of those compiled in inline.

Zach

  reply	other threads:[~2005-11-15 16:04 UTC|newest]

Thread overview: 154+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-10  0:32 [PATCH 1/10] Cr4 is valid on some 486s Zachary Amsden
2005-11-11 10:36 ` Pavel Machek
2005-11-11 17:49   ` H. Peter Anvin
2005-11-11 18:00     ` Maciej W. Rozycki
2005-11-11 19:36   ` Zachary Amsden
2005-11-11 19:58     ` Linus Torvalds
2005-11-11 20:14       ` Zachary Amsden
2005-11-11 20:22         ` Linus Torvalds
2005-11-13  7:42           ` Dave Jones
2005-11-13 10:59             ` Andi Kleen
2005-11-13 17:26               ` Alan Cox
2005-11-13 17:09                 ` Eric W. Biederman
2005-11-13 19:00                 ` Andi Kleen
2005-11-13 19:07                   ` Eric W. Biederman
2005-11-13 19:41                   ` Alan Cox
2005-11-13 19:36                     ` Linus Torvalds
2005-11-13 21:32                       ` Alan Cox
2005-11-14  7:46                         ` Arjan van de Ven
2005-11-13 19:56                 ` H. Peter Anvin
2005-11-13 19:24             ` Linus Torvalds
2005-11-13 20:29               ` Linus Torvalds
2005-11-14 15:06                 ` Gerd Knorr
2005-11-14 19:25                   ` Linus Torvalds
2005-11-14 19:46                     ` Zachary Amsden
2005-11-14 19:52                       ` Arjan van de Ven
2005-11-14 20:34                         ` Zachary Amsden
2005-11-14 20:52                           ` Arjan van de Ven
2005-11-15 14:12                     ` Gerd Knorr
2005-11-15 16:01                       ` Gerd Knorr
2005-11-15 16:04                         ` Zachary Amsden [this message]
2005-11-15 16:06                           ` Arjan van de Ven
2005-11-15 16:10                             ` Dave Jones
2005-11-15 16:14                               ` H. Peter Anvin
2005-11-15 16:19                                 ` Dave Jones
2005-11-15 16:25                                   ` Arjan van de Ven
2005-11-15 16:34                                     ` Zachary Amsden
2005-11-15 16:28                                   ` H. Peter Anvin
2005-11-15 16:24                             ` Zachary Amsden
2005-11-15 16:52                               ` Linus Torvalds
2005-11-15 16:16                           ` Gerd Knorr
2005-11-15 16:08                         ` Roland Dreier
2005-11-16  9:58                           ` Gerd Knorr
2005-11-15 16:12                         ` Linus Torvalds
2005-11-15 16:16                           ` Dave Jones
2005-11-15 16:27                             ` Gerd Knorr
2005-11-16 16:12                         ` [RFC] SMP alternatives Gerd Knorr
2005-11-22 17:48                           ` [patch] " Gerd Knorr
2005-11-22 18:01                             ` Pavel Machek
2005-11-23 15:12                             ` Vincent Hanquez
2005-11-23 19:17                             ` Andi Kleen
2005-11-23 15:29                               ` Gerd Knorr
2005-11-23 16:42                               ` Alan Cox
2005-11-23 16:39                                 ` Andi Kleen
2005-11-23 17:21                                   ` Alan Cox
2005-11-23 16:59                                     ` Andi Kleen
2005-11-23 22:00                                       ` Alan Cox
2005-11-24 13:13                                         ` Andi Kleen
2005-11-24 13:30                                           ` Eric W. Biederman
2005-11-24 13:39                                             ` Andi Kleen
2005-11-24 13:58                                               ` Eric W. Biederman
2005-11-24 19:16                                                 ` thockin
2005-11-24 19:26                                                   ` Andi Kleen
2005-11-24 14:34                                               ` Alan Cox
2005-11-24 14:22                                                 ` Andi Kleen
2005-11-24 15:15                                                   ` Alan Cox
2005-11-24 14:55                                                     ` Andi Kleen
2005-11-24 15:09                                                       ` Eric W. Biederman
2005-11-24 15:36                                                         ` Andi Kleen
2005-11-24 16:49                                                           ` Eric W. Biederman
2005-11-24 19:12                                                           ` thockin
2005-11-24 19:14                                                             ` Andi Kleen
2005-11-24 19:24                                                               ` thockin
2005-11-24 19:29                                                                 ` Andi Kleen
2005-11-24 19:44                                                                   ` thockin
2005-11-24 21:20                                                                     ` Andi Kleen
2005-11-24 21:40                                                                       ` thockin
2005-11-24 23:33                                                                       ` Eric W. Biederman
2005-11-24 23:12                                                               ` Alan Cox
2005-11-24 22:48                                                                 ` thockin
2005-11-24 23:35                                                                   ` Andi Kleen
2005-11-25  0:13                                                                     ` Alan Cox
2005-11-25  1:33                                                                     ` H. Peter Anvin
2005-11-28 19:15                                                                     ` Bill Davidsen
2005-11-24 16:02                                                         ` Alan Cox
2005-11-24 19:09                                                     ` thockin
2005-11-24 14:30                                           ` Alan Cox
2005-11-23 17:02                                     ` Linus Torvalds
2005-11-23 18:02                                       ` H. Peter Anvin
2005-11-23 18:42                                         ` Linus Torvalds
2005-11-23 17:26                                           ` Jeff V. Merkey
2005-11-23 19:03                                             ` Linus Torvalds
2005-11-23 19:31                                               ` jmerkey
2005-11-23 18:46                                           ` Andi Kleen
2005-11-23 19:12                                           ` H. Peter Anvin
2005-11-23 19:30                                             ` jmerkey
2005-11-23 21:44                                           ` Alan Cox
2005-11-23 21:13                                             ` Andi Kleen
2005-11-23 21:46                                               ` Jeff Garzik
2005-11-23 22:23                                                 ` Andi Kleen
2005-11-23 22:30                                                 ` Pavel Machek
2005-11-23 22:05                                               ` Alan Cox
2005-11-23 21:36                                                 ` Arjan van de Ven
2005-11-23 21:36                                                 ` Andi Kleen
2005-11-23 22:13                                                 ` Linus Torvalds
2005-11-23 21:36                                             ` Linus Torvalds
2005-11-23 21:43                                               ` Andi Kleen
2005-11-23 22:15                                                 ` Linus Torvalds
2005-11-23 22:22                                                   ` Andi Kleen
2005-11-23 22:25                                                     ` H. Peter Anvin
2005-11-23 22:32                                                       ` Andi Kleen
2005-11-23 22:36                                                         ` H. Peter Anvin
2005-11-23 22:40                                                           ` Andi Kleen
2005-11-23 22:52                                                             ` H. Peter Anvin
2005-11-23 23:10                                                     ` Linus Torvalds
2005-11-24  0:55                                                 ` Jeff Garzik
2005-11-23 21:48                                               ` Daniel Jacobowitz
2005-11-23 21:53                                                 ` H. Peter Anvin
2005-11-23 22:03                                                   ` Daniel Jacobowitz
2005-11-23 22:09                                                     ` H. Peter Anvin
2005-11-23 22:21                                                       ` Linus Torvalds
2005-11-23 23:29                                                         ` Eric W. Biederman
2005-11-23 23:40                                                           ` Linus Torvalds
2005-11-23 22:19                                                 ` Linus Torvalds
2005-11-23 22:20                                                   ` Daniel Jacobowitz
2005-11-23 23:08                                                     ` Linus Torvalds
2005-11-23 23:02                                                       ` Jeff V. Merkey
2005-11-23 23:42                                                       ` Daniel Jacobowitz
2005-11-23 23:59                                                         ` Linus Torvalds
2005-11-24  2:06                                                           ` Daniel Jacobowitz
2005-11-24 22:32                                                         ` Ulrich Drepper
2005-11-28 19:58                                                         ` Bill Davidsen
2005-11-24  1:02                                                       ` Jeff Garzik
2005-11-24 13:01                                                       ` Pádraig Brady
2005-11-24 13:12                                                         ` Arjan van de Ven
2005-11-28 19:52                                                       ` Bill Davidsen
2005-11-28 20:05                                                         ` Zachary Amsden
2005-11-28 22:19                                                         ` Jeff V. Merkey
2005-11-28 23:00                                                           ` Zachary Amsden
2005-11-28 23:07                                                             ` H. Peter Anvin
2005-11-28 23:30                                                               ` Zachary Amsden
2005-11-28 23:32                                                                 ` H. Peter Anvin
2005-11-28 23:12                                                             ` Andi Kleen
2005-11-23 22:50                                               ` Alan Cox
2005-11-23 22:22                                                 ` H. Peter Anvin
2005-11-25  7:38                                               ` Chris Wedgwood
2005-11-25 17:33                                                 ` Linus Torvalds
2005-11-28 20:25                                                   ` Bill Davidsen
2005-11-25 20:13                                                 ` H. Peter Anvin
2005-11-24  3:23                                             ` Mikulas Patocka
2005-11-24  3:31                                           ` Mikulas Patocka
2005-11-24  3:55                                             ` H. Peter Anvin
2005-11-24 22:30                                           ` Ulrich Drepper
2005-11-23 16:43                                 ` Gerd Knorr
2005-11-23 16:51                                   ` H. Peter Anvin

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