From: Ingo Molnar <mingo@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Robin Holt <holt@sgi.com>, Ingo Molnar <mingo@redhat.com>,
Russ Anderson <rja@sgi.com>, Shawn Guo <shawn.guo@linaro.org>,
Oleg Nesterov <oleg@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
"H. Peter Anvin" <hpa@zytor.com>, Joe Perches <joe@perches.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Michel Lespinasse <walken@google.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <peterz@infradead.org>,
"rusty@rustcorp.com.au" <rusty@rustcorp.com.au>,
Tejun Heo <tj@kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [Patch -v4 1/4] Migrate shutdown/reboot to boot cpu.
Date: Fri, 19 Apr 2013 09:56:29 +0200 [thread overview]
Message-ID: <20130419075629.GE20897@gmail.com> (raw)
In-Reply-To: <20130417092737.GA12402@pd.tnic>
* Borislav Petkov <bp@alien8.de> wrote:
> On Wed, Apr 17, 2013 at 09:46:53AM +0200, Ingo Molnar wrote:
>
> > What you mention here should indeed already be handled by the architecture
> > hotplug code (for example on x86 the boot CPU cannot be hot-removed).
>
> Supposedly, some new Intels (I think Ivybridge or so) can actually be
> hot-removed.
There are WIP patches in existence that remove the limitations on the kernel side,
but they are not upstream yet, so currently the constraint exists upstream.
Thanks,
Ingo
next prev parent reply other threads:[~2013-04-19 7:56 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 9:58 [Patch -v4 1/4] Migrate shutdown/reboot to boot cpu Robin Holt
2013-04-16 11:32 ` Ingo Molnar
2013-04-16 12:06 ` Robin Holt
2013-04-16 14:01 ` Robin Holt
2013-04-17 7:46 ` Ingo Molnar
2013-04-17 9:27 ` Borislav Petkov
2013-04-19 7:56 ` Ingo Molnar [this message]
2013-04-19 8:29 ` Srivatsa S. Bhat
2013-04-19 8:44 ` Ingo Molnar
2013-04-16 15:48 ` Srivatsa S. Bhat
2013-04-16 16:22 ` Robin Holt
2013-04-17 7:48 ` Ingo Molnar
2013-04-17 10:03 ` Robin Holt
2013-04-17 11:31 ` Srivatsa S. Bhat
2013-04-17 11:58 ` Robin Holt
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