On Fri, Jul 5, 2013 at 12:11 PM, Hesham Moustafa <heshamelmat...@gmail.com> wrote: > Hi, > > I am working on a use case for cortex-a9/realview BSP that deals with page > tables and MMU. I need your help in gathering the required API and calls and > any other details to implement the following case (if applicable) : > > 1- A thread running on a core that updates the page table. > 2- On another core another thread is running and trying to update the page > table. > > Is that use case possible, or disabling dispatches, MMU, and interrupts > avoids that situation ? > I think this is a possible situation. I suppose right now the page tables are statically initialized by a boot processor, but if you enable dynamically modifying the page table, then you need to protect that memory somehow. Probably with a spin lock.
> Is it possible to force a thread to run on a specific core ? or the current > SMP scheduler handles that ? > > I am thinking of applying a SHARED_MEMORY attribute on page tables itself > and implement the mentioned use case. > > Regards, > Hesham > > _______________________________________________ > rtems-devel mailing list > rtems-devel@rtems.org > http://www.rtems.org/mailman/listinfo/rtems-devel > _______________________________________________ rtems-devel mailing list rtems-devel@rtems.org http://www.rtems.org/mailman/listinfo/rtems-devel
