linux-kernel - Re: [tip:x86/platform] x86/vsmp: Use hypervisor layer for initialization

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Date:	Wed, 22 Aug 2012 12:08:45 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Ido Yariv <ido@...ery.com>
Cc:	hpa@...or.com, linux-kernel@...r.kernel.org, shai@...lemp.com,
	tglx@...utronix.de, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/platform] x86/vsmp: Use hypervisor layer for
 initialization


* Ido Yariv <ido@...ery.com> wrote:

> Hi Ingo,
> 
> On Wed, Aug 22, 2012 at 11:11:41AM +0200, Ingo Molnar wrote:
> > 
> > * tip-bot for Ido Yariv <ido@...ery.com> wrote:
> > 
> > > Commit-ID:  c00679af441c5be76e195deed2c76fef65a5d102
> > > Gitweb:     http://git.kernel.org/tip/c00679af441c5be76e195deed2c76fef65a5d102
> > > Author:     Ido Yariv <ido@...ery.com>
> > > AuthorDate: Wed, 8 Aug 2012 20:01:38 +0300
> > > Committer:  Ingo Molnar <mingo@...nel.org>
> > > CommitDate: Wed, 22 Aug 2012 10:48:05 +0200
> > > 
> > > x86/vsmp: Use hypervisor layer for initialization
> > > 
> > > vSMP detection and initialization could be done by
> > > the hypervisor layer, so set it up that way.
> > > 
> > > This cleans up vSMP initialization.
> > > 
> > > Signed-off-by: Ido Yariv <ido@...ery.com>
> > > Acked-by: Shai Fultheim <shai@...lemp.com>
> > > Link: http://lkml.kernel.org/r/1344445299-22142-1-git-send-email-ido@wizery.com
> > > Signed-off-by: Ingo Molnar <mingo@...nel.org>
> > > ---
> > >  arch/x86/include/asm/hypervisor.h |    1 +
> > >  arch/x86/include/asm/setup.h      |    7 -------
> > >  arch/x86/kernel/cpu/hypervisor.c  |    1 +
> > >  arch/x86/kernel/setup.c           |    2 --
> > >  arch/x86/kernel/vsmp_64.c         |   27 +++++++++++++++++----------
> > >  5 files changed, 19 insertions(+), 19 deletions(-)
> > 
> > I had to zap this commit because it breaks the build:
> > 
> > (.init.rodata+0x4c8): undefined reference to `x86_hyper_vsmp'
> 
> I failed to notice that vsmp_64.c is only built on 64bit, so this will
> break on 32bit builds.
> 
> How about the patch below?

Please test it in the configs that matter and resubmit.

Thanks,

	Ingo
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