On Tue, Jun 15, 2004 at 11:49:45AM +0100, Dave Jones wrote: > From: Dave Jones <davej@xxxxxxxxxx> > To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx> > Date: Tue, 15 Jun 2004 11:49:45 +0100 > Subject: Re: How would one test for, StackSize=4k > Reply-To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx> > > On Mon, 2004-06-14 at 23:20, T. 'Nifty New Hat' Mitchell wrote: > > The 4K stack size seems to be part of the future. > > > > As the transition progresses, how would one test for StackSize=4k? > > Both in make/config files and in install scripts where two object > > (4k or 8K) could be installed. > > > > Also is it possible to build a set of wrappers that do the right > > thing into and out of a driver when the driver and kernel ABI > > do not match on this choice. > > If you fix the code so that it works with a 4K stack, it'll > work fine with an 8KB one too. I can't actually think of a > valid reason for a module wanting to detect which is in use. Thanks Dave, I had not thought about it from that side of the room. It makes sense that if you can manage to live with a 4K stack an extra 4K would not cause harm with the possible exception of memory allocation bugs (leak/free). The reverse is not true. For a second or two I wondered if knowing the stack size would be valuable for an install script to check and not load 8K stack code. However, anyone reworking things to add such a test might as well do the right thing and recompile/adjust for 4K stacks. I suspect that there are still some folks working on new kernel stuff with 8K stacks active on their systems some caution on this topic will continue.... -- T o m M i t c h e l l /dev/null the ultimate in secure storage.
