From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: Discontiguous memory and cacheflush
Date: Thu, 16 Aug 2012 10:19:53 +0100 [thread overview]
Message-ID: <20120816091953.GL18957@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20120816082726.GA2101@linaro.org>
On Thu, Aug 16, 2012 at 09:27:26AM +0100, Dave Martin wrote:
> Could we use the currently must-be-zero flags parameter to add new
> functionality to this syscall, or are there legacy uses of that
> parameter (or history of userspace not bothering to zero it?)
>
> For example, we could have something like
>
> do_cache_op(struct iovec *iov, int iovcnt, CF_IOVEC)
>
> to flush a discontiguous set of ranges described by an iovec (though we
> can of course also describe the ranges in other ways)
Why overload an existing syscall with multiple different argument types
rather than having a new syscall with a sane API?
next prev parent reply other threads:[~2012-08-16 9:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <447177957.1189939.1344577602635.JavaMail.root@mozilla.com>
2012-08-10 5:52 ` Discontiguous memory and cacheflush Martin Rosenberg
2012-08-13 14:42 ` Jonathan Austin
2012-08-13 16:00 ` Russell King - ARM Linux
2012-08-15 22:08 ` Martin Rosenberg
2012-08-16 8:27 ` Dave Martin
2012-08-16 9:19 ` Russell King - ARM Linux [this message]
2012-08-16 9:43 ` Dave Martin
2012-08-17 15:53 ` Jonathan Austin
2012-08-17 21:03 ` Russell King - ARM Linux
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