linux-kernel - Re: [PATCH] x86: enable x2apic early at the first point

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Date:	Sun, 22 Feb 2009 18:21:23 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: enable x2apic early at the first point


* Suresh Siddha <suresh.b.siddha@...el.com> wrote:

> On Fri, 2009-02-20 at 01:55 -0800, Ingo Molnar wrote:
> > * Ingo Molnar <mingo@...e.hu> wrote:
> > 
> > > >  arch/x86/kernel/apic/apic.c           |    3 +--
> > > >  arch/x86/kernel/apic/x2apic_cluster.c |    5 ++++-
> > > >  arch/x86/kernel/apic/x2apic_phys.c    |    5 ++++-
> > > >  arch/x86/kernel/apic/x2apic_uv_x.c    |    4 +++-
> > > >  drivers/pci/dmar.c                    |    3 ++-
> > > >  5 files changed, 14 insertions(+), 6 deletions(-)
> > > 
> > > I've applied it because it fixes a real bug, but this code 
> > > really needs a cleanup. Look at the repeat patterns:
> > 
> > unapplied it again as it breaks the build:
> > 
> > arch/x86/kernel/apic/x2apic_cluster.c: In function 'x2apic_acpi_madt_oem_check':
> > arch/x86/kernel/apic/x2apic_cluster.c:17: error: 'disable_x2apic' undeclared (first use in this function)
> > arch/x86/kernel/apic/x2apic_cluster.c:17: error: (Each undeclared identifier is reported only once
> > arch/x86/kernel/apic/x2apic_cluster.c:17: error: for each function it appears in.)
> > 
> > so please resend the fixed and cleaned up version.
> 
> From: Suresh Siddha <suresh.b.siddha@...el.com>
> Subject: x86: select x2apic ops in early apic probe only if x2apic mode is enabled

Applied to tip:x86/apic, thanks Suresh!

	Ingo
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