From: Peter Zijlstra <peterz@infradead.org>
To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: tglx@linutronix.de, mingo@kernel.org, tj@kernel.org,
rusty@rustcorp.com.au, akpm@linux-foundation.org,
fweisbec@gmail.com, hch@infradead.org, mgorman@suse.de,
riel@redhat.com, bp@suse.de, rostedt@goodmis.org,
mgalbraith@suse.de, ego@linux.vnet.ibm.com,
paulmck@linux.vnet.ibm.com, oleg@redhat.com, rjw@rjwysocki.net,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 2/3] CPU hotplug, stop-machine: Plug race-window that leads to "IPI-to-offline-CPU"
Date: Fri, 23 May 2014 17:21:45 +0200 [thread overview]
Message-ID: <20140523152145.GF30445@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20140523101216.17924.62447.stgit@srivatsabhat.in.ibm.com>
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On Fri, May 23, 2014 at 03:42:20PM +0530, Srivatsa S. Bhat wrote:
> Re-enable interrupts Re-enable interrupts
>
> The pending IPI is noted
> immediately, but alas,
> the CPU is offline at
> this point.
>
So wasn't clear_local_APIC() (and the arch function __cpu_disable() in
general) wipe all pending interrup state?
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next prev parent reply other threads:[~2014-05-23 15:21 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-23 10:11 [PATCH v6 0/3] CPU hotplug: Fix the long-standing "IPI to offline CPU" issue Srivatsa S. Bhat
2014-05-23 10:12 ` [PATCH v6 1/3] smp: Print more useful debug info upon receiving IPI on an offline CPU Srivatsa S. Bhat
2014-05-23 10:12 ` [PATCH v6 2/3] CPU hotplug, stop-machine: Plug race-window that leads to "IPI-to-offline-CPU" Srivatsa S. Bhat
2014-05-23 13:22 ` Frederic Weisbecker
2014-05-23 14:45 ` Srivatsa S. Bhat
2014-05-23 15:04 ` Frederic Weisbecker
2014-05-23 15:24 ` Srivatsa S. Bhat
2014-05-23 15:12 ` Peter Zijlstra
2014-05-23 15:18 ` Srivatsa S. Bhat
2014-05-23 15:31 ` Peter Zijlstra
2014-05-23 15:33 ` Srivatsa S. Bhat
2014-05-23 15:37 ` Srivatsa S. Bhat
2014-05-23 15:48 ` Peter Zijlstra
2014-05-23 15:53 ` Srivatsa S. Bhat
2014-05-23 17:05 ` Srivatsa S. Bhat
2014-05-23 15:21 ` Peter Zijlstra [this message]
2014-05-23 15:31 ` Srivatsa S. Bhat
2014-05-23 10:12 ` [PATCH v6 3/3] CPU hotplug, smp: Flush any pending IPI callbacks before CPU offline Srivatsa S. Bhat
2014-05-23 13:27 ` Frederic Weisbecker
2014-05-23 14:47 ` Srivatsa S. Bhat
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