From: Ingo Molnar <mingo@elte.hu>
To: Jan Beulich <jbeulich@novell.com>
Cc: robert.richter@amd.com, linux-kernel@vger.kernel.org
Subject: Re: patch "x86: MOVE PCI IO ECS code to x86/pci" breaks CPU hotplug
Date: Thu, 21 Aug 2008 15:02:59 +0200 [thread overview]
Message-ID: <20080821130259.GA22887@elte.hu> (raw)
In-Reply-To: <48AD7F80.76E4.0078.0@novell.com>
* Jan Beulich <jbeulich@novell.com> wrote:
> Converting __cpuinit functions called out of init_amd() (and similar
> others) to __init (and making them subject of xxx_initcall() handling
> isn't valid, as they would no longer be called for hot plugged CPUs.
>
> Further, since it's likely that in virtualized environments the MSR
> write would at best be ignored, I'd also recommend using the
> fault-safe accessors here *and* check that the bit actually got set
> before setting PCI_HAS_IO_ECS (one would obviously have to BUG() when
> hot-plugged CPUs fail to set the bit when those available at boot
> successfully did so).
hm, which patch is this exactly, and in what tree? It's not upstream nor
in -tip.
Ingo
next prev parent reply other threads:[~2008-08-21 13:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-21 12:45 Jan Beulich
2008-08-21 13:02 ` Ingo Molnar [this message]
2008-08-21 13:16 ` Robert Richter
2008-08-22 6:05 ` Ingo Molnar
2008-08-21 13:19 ` Jan Beulich
2008-08-21 12:59 Jan Beulich
2008-08-21 13:29 ` Robert Richter
2008-08-21 16:25 ` Yinghai Lu
2008-08-21 16:46 ` Robert Richter
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