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Date: Sat, 14 Feb 2009 12:37:01 -0500
Message-ID: <8bd0f97a0902140937v22917306m44e062d5b0dfacf6@mail.gmail.com>
Subject: Re: [ltt-dev] [RFC git tree] Userspace RCU (urcu) for Linux (repost)
From: Mike Frysinger <vapier.adi@gmail.com>
To: paulmck@linux.vnet.ibm.com
Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Nick Piggin <nickpiggin@yahoo.com.au>, Bryan Wu <cooloney@kernel.org>,
       linux-kernel@vger.kernel.org, ltt-dev@lists.casi.polymtl.ca,
       uclinux-dist-devel@blackfin.uclinux.org
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On Sat, Feb 14, 2009 at 10:06, Paul E. McKenney wrote:
> Other potential issues include unrelated processes that share memory via
> shmget() or mmap() -- presumably groups of such processes would need to
> be bound to a single CPU?

using PROT_WRITE with MAP_SHARED is a mess with no-mmu already ... in
other words, it isnt in use in practice as most of the time, the
kernel wont even grant it

i dont believe we've looked at shm/ipc ... i'll open a tracker item on
our side to review it
-mike