On Thu, Aug 26, 2010 at 06:01:56AM +0200, Michał Nazarewicz wrote: >KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: >>128MB...too big ? But it's depend on config. > >On embedded systems it may be like half of the RAM. Or a quarter. So bigger >granularity could be desired on some platforms. > >>IBM's ppc guys used 16MB section, and recently, a new interface to shrink >>the number of /sys files are added, maybe usable. >> >>Something good with this approach will be you can create "cma" memory >>before installing driver. > >That's how CMA works at the moment. But if I understand you correctly, what >you are proposing would allow to reserve memory *at* *runtime* long after system >has booted. This would be a nice feature as well though. > Yeah, if we can do this, that will avoid rebooting for kdump to reserve memory. Thanks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>