From: mulyadi.santosa@gmail.com (Mulyadi Santosa)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Self modifying code in ARM 11 architectures
Date: Wed, 25 May 2011 22:55:16 +0700 [thread overview]
Message-ID: <BANLkTinHp7XUe_9ndQUaOOmL3SYC9ti4OA@mail.gmail.com> (raw)
In-Reply-To: <20110525151848.GA2085@michaelblizek.twilightparadox.com>
Hi Michi...
On Wed, May 25, 2011 at 22:18, Michael Blizek
<michi1@michaelblizek.twilightparadox.com> wrote:
> This sounds like a very interesting arch to me. I would very much like to see
> any code which does cache flushing when changing a function pointer. In the
> mean time, let us assume that function pointers are data, not code. ;-) Then,
> you still have to think about concurrency, but not about cache flushing.
I think, changing function pointer assignment is only needed in SMP
environment and when we see a chance that that code is executed by
more than one concurrent code path. Other than that, in x86, i think
it's not needed. And thanks for x86 strict memory ordering, we're not
burdened with too much memory barrier.
CMIIW here people...
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
next prev parent reply other threads:[~2011-05-25 15:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-24 10:15 Self modifying code in ARM 11 architectures Ashok Babu
2011-05-25 3:55 ` Mulyadi Santosa
2011-05-25 15:18 ` Michael Blizek
2011-05-25 15:55 ` Mulyadi Santosa [this message]
2011-05-25 16:28 ` Peter Teoh
2011-05-26 2:53 ` Peter Teoh
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