From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
Gilad Ben-Yossef <gilad@benyossef.com>,
Noam Camus <noamc@ezchip.com>,
David Daney <david.daney@cavium.com>,
James Hogan <james.hogan@imgtec.com>,
thomas Gleixner <tglx@linutronix.de>,
lkml <linux-kernel@vger.kernel.org>,
Richard Kuo <rkuo@codeaurora.org>
Subject: Re: Preventing IPI sending races in arch code
Date: Tue, 26 Nov 2013 12:05:29 +0530 [thread overview]
Message-ID: <52944131.2040609@synopsys.com> (raw)
In-Reply-To: <1385442661.9218.51.camel@pasglop>
On 11/26/2013 10:41 AM, Benjamin Herrenschmidt wrote:
>> Right, but the issue per-se is not clobbering of msg holder, but from POV of
>> > receiver, seeming coalescing of 2 set_bit writes to msg holder.
> That's fine. There's no expectation that N ipi_send_msg turn into N
> messages received... it turns into at least one.
OK, I was not aware of that relaxation in semantics.
Thx,
-Vineet
prev parent reply other threads:[~2013-11-26 6:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-25 10:52 Preventing IPI sending races in arch code Vineet Gupta
2013-11-25 11:00 ` Peter Zijlstra
2013-11-25 11:30 ` Vineet Gupta
2013-11-25 12:27 ` Peter Zijlstra
2013-11-25 13:35 ` Vineet Gupta
2013-11-25 13:57 ` Peter Zijlstra
2013-11-25 19:51 ` Benjamin Herrenschmidt
2013-11-26 4:47 ` Vineet Gupta
2013-11-26 5:11 ` Benjamin Herrenschmidt
2013-11-26 6:35 ` Vineet Gupta [this message]
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