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From: Oren Laadan <orenl@cs.columbia.edu>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	containers@lists.linux-foundation.org,
	Theodore Tso <tytso@mit.edu>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 2/4] checkpoint/restart: x86 support
Date: Fri, 08 Aug 2008 21:20:14 -0400	[thread overview]
Message-ID: <489CF0CE.1000603@cs.columbia.edu> (raw)
In-Reply-To: <1218242286.19082.62.camel@nimitz>



Dave Hansen wrote:
> On Fri, 2008-08-08 at 19:04 -0400, Oren Laadan wrote:
>>> struct pt_regs is part of the kernel ABI, it will not change.
>> I'm in favor about keeping the format identical between the variations of
>> each architecture. Note, however, that "struct pt_regs" won't do because it
>> may change with these variations.
> 
> "Part of the kernel ABI" makes it sound to me like it won't change.
> Who's right here? :)
 >
 > -- Dave
 >

hehehe .. both; I meant that while it doesn't change per architecture, it
varies between architectures. So "struct pt_regs" compiled for x86-32 is
different than that compiled for x86-64. Therefore we can't just dump the
structure as is and expect that 64 bit would be able to parse the 32 bit.
In other words, we need an intermediate representation.

Oren.

  reply	other threads:[~2008-08-09  1:20 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-07 22:40 [RFC][PATCH 0/4] kernel-based checkpoint restart Dave Hansen
2008-08-07 22:40 ` [RFC][PATCH 1/4] checkpoint-restart: general infrastructure Dave Hansen
2008-08-08  9:46   ` Arnd Bergmann
2008-08-08 18:50     ` Dave Hansen
2008-08-08 20:59       ` Oren Laadan
2008-08-08 22:17         ` Dave Hansen
2008-08-08 23:27           ` Oren Laadan
2008-08-08 22:23         ` Arnd Bergmann
2008-08-14  8:09         ` [Devel] " Pavel Emelyanov
2008-08-14 15:16           ` Dave Hansen
2008-08-08 22:13       ` Arnd Bergmann
2008-08-08 22:26         ` Dave Hansen
2008-08-08 22:39           ` Arnd Bergmann
2008-08-09  0:43             ` Dave Hansen
2008-08-09  6:37               ` Arnd Bergmann
2008-08-09 13:39                 ` Dave Hansen
2008-08-11 15:07           ` Serge E. Hallyn
2008-08-11 15:25             ` Arnd Bergmann
2008-08-14  5:53             ` Pavel Machek
2008-08-14 15:12               ` Dave Hansen
2008-08-20 21:40               ` Oren Laadan
2008-08-11 15:22         ` Serge E. Hallyn
2008-08-11 16:53           ` Arnd Bergmann
2008-08-11 17:11             ` Dave Hansen
2008-08-11 19:48             ` checkpoint/restart ABI Dave Hansen
2008-08-11 21:47               ` Arnd Bergmann
2008-08-11 23:14                 ` Jonathan Corbet
2008-08-11 23:23                   ` Dave Hansen
2008-08-21  5:56                 ` Oren Laadan
2008-08-21  8:43                   ` Arnd Bergmann
2008-08-21 15:43                     ` Oren Laadan
2008-08-11 21:54               ` Oren Laadan
2008-08-11 23:38               ` Jeremy Fitzhardinge
2008-08-11 23:54                 ` Peter Chubb
2008-08-12 14:49                   ` Serge E. Hallyn
2008-08-28 23:40                     ` Eric W. Biederman
2008-08-12 15:11                   ` Dave Hansen
2008-08-12 14:58                 ` Dave Hansen
2008-08-12 16:32                   ` Jeremy Fitzhardinge
2008-08-12 16:46                     ` Dave Hansen
2008-08-12 17:04                       ` Jeremy Fitzhardinge
2008-08-20 21:52                         ` Oren Laadan
2008-08-20 21:54                       ` Oren Laadan
2008-08-20 22:11                         ` Dave Hansen
2008-08-11 18:03   ` [RFC][PATCH 1/4] checkpoint-restart: general infrastructure Jonathan Corbet
2008-08-11 18:38     ` Dave Hansen
2008-08-12  3:44       ` Oren Laadan
2008-08-18  9:26   ` [Devel] " Pavel Emelyanov
2008-08-20 19:10     ` Dave Hansen
2008-08-07 22:40 ` [RFC][PATCH 2/4] checkpoint/restart: x86 support Dave Hansen
2008-08-08 12:09   ` Arnd Bergmann
2008-08-08 20:28     ` Oren Laadan
2008-08-08 22:29       ` Arnd Bergmann
2008-08-08 23:04         ` Oren Laadan
2008-08-09  0:38           ` Dave Hansen
2008-08-09  1:20             ` Oren Laadan [this message]
2008-08-09  2:20               ` Dave Hansen
2008-08-09  2:35                 ` Oren Laadan
2008-08-10 14:55             ` Jeremy Fitzhardinge
2008-08-11 15:36               ` Dave Hansen
2008-08-11 16:07                 ` Jeremy Fitzhardinge
2008-08-09  6:43           ` Arnd Bergmann
2008-08-07 22:40 ` [RFC][PATCH 3/4] checkpoint/restart: memory management Dave Hansen
2008-08-08 12:12   ` Arnd Bergmann
2008-08-07 22:40 ` [RFC][PATCH 4/4] introduce sys_checkpoint and sys_restore Dave Hansen
2008-08-08 12:15   ` Arnd Bergmann
2008-08-08 20:33     ` Oren Laadan
2008-08-08  9:25 ` [RFC][PATCH 0/4] kernel-based checkpoint restart Arnd Bergmann
2008-08-08 18:06   ` Dave Hansen
2008-08-08 18:18     ` Arnd Bergmann
2008-08-08 19:44   ` Oren Laadan

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