From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Date: Wed, 08 Oct 2003 21:46:18 +0000 Subject: Re: user-space unaligned accesses Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Wed, Oct 08, 2003 at 08:42:00AM -0600, Bjorn Helgaas wrote: > ... > The ia64 architecture does a tty_write > on a userspace unaligned access. Not only is this extremenly annoying, > it's also very broken since the tty may well be suspended etc etc. > Doing a printk on such an access by default is very broken already, > lets not make it worse This was beat to death on linux-ia64 already where davidm and davem decided to disagree on the utility of printing unaligned accesses to the tty. davidm wrote: | At the moment, there are two ways to control the unaligned message printing: | | - use the dmesg command to lower the printing threshold below KERN_WARNING | ("dmesg -n4", IIRC) | | - use prctl --unalign=silent to turn off unaligned printing for a | particular task and its children Running prctl on relevant gettys at boot time would have the same effect. grant