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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Pavel Machek <pavel@ucw.cz>
Cc: Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@suse.de>,
	Avi Kivity <avi@qumranet.com>,
	Glauber de Oliveira Costa <gcosta@redhat.com>,
	linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
	glommer@gmail.com, tglx@linutronix.de, ehabkost@redhat.com,
	jeremy@goop.org, anthony@codemonkey.ws,
	virtualization@lists.linux-foundation.org, rusty@rustcorp.com.au,
	chrisw@sous-sol.org, rostedt@goodmis.org, hpa@zytor.com
Subject: Re: [PATCH 4/8] unify paravirt parts of system.h
Date: Mon, 17 Dec 2007 01:58:31 +0100
Message-ID: <200712170158.33914.rjw@sisk.pl> (raw)
In-Reply-To: <20071217002306.GD5692@elf.ucw.cz>

On Monday, 17 of December 2007, Pavel Machek wrote:
> On Mon 2007-12-17 01:27:29, Rafael J. Wysocki wrote:
> > On Saturday, 15 of December 2007, Ingo Molnar wrote:
> > > 
> > > * Pavel Machek <pavel@ucw.cz> wrote:
> > > 
> > > > > Linux never uses that register. The only user is suspend 
> > > > > save/restore, but that' bogus because it wasn't ever initialized by 
> > > > > Linux in the first place. It could be probably all safely removed.
> > > > 
> > > > It probably is safe to remove... but we currently support '2.8.95 
> > > > kernel loads/resumes 2.6.24 image'... which would break if 2.8 uses 
> > > > cr8.
> > > > 
> > > > So please keep it if it is not a big problem.
> > > 
> > > hm, so __save_processor_state() is in essence an ABI? Could you please 
> > > also send a patch that documents this prominently, in the structure 
> > > itself?
> > 
> > Hmm, I'm not sure if it really is an ABI part.  It doesn't communicate anything
> > outside of the kernel in which it is defined.
> 
> Well, it is not "application binary interface", but it is
> "kernel-to-kernel binary interface"...

Hm, rather a kernel-to-itself interface. ;-)

Rafael

  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-04 16:06 [PATCH 0/8] Integrate system.h Glauber de Oliveira Costa
2007-12-04 16:06 ` [PATCH 1/8] remove volatile keyword from clflush Glauber de Oliveira Costa
2007-12-04 16:06   ` [PATCH 2/8] put together equal pieces of system.h Glauber de Oliveira Costa
2007-12-04 16:06     ` [PATCH 3/8] unify load_segment macro Glauber de Oliveira Costa
2007-12-04 16:06       ` [PATCH 4/8] unify paravirt parts of system.h Glauber de Oliveira Costa
2007-12-04 16:06         ` [PATCH 5/8] remove unused macro Glauber de Oliveira Costa
2007-12-04 16:06           ` [PATCH 6/8] unify smp parts of system.h Glauber de Oliveira Costa
2007-12-04 16:06             ` [PATCH 7/8] move switch_to macro to system.h Glauber de Oliveira Costa
2007-12-04 16:06               ` [PATCH 8/8] unify system.h Glauber de Oliveira Costa
2007-12-04 19:18         ` [PATCH 4/8] unify paravirt parts of system.h Avi Kivity
2007-12-04 19:34           ` Andi Kleen
2007-12-05 16:30             ` Pavel Machek
2007-12-15 13:17               ` Ingo Molnar
2007-12-17  0:27                 ` Rafael J. Wysocki
2007-12-17  0:23                   ` Pavel Machek
2007-12-17  0:58                     ` Rafael J. Wysocki [this message]
2007-12-15 13:26               ` Andi Kleen
2007-12-15 22:54                 ` Pavel Machek
2007-12-15 20:28               ` H. Peter Anvin
2007-12-04 19:41           ` Glauber de Oliveira Costa
2007-12-04 22:14             ` Denys Vlasenko

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