On Fri, Aug 19, 2011 at 11:53:04PM +0300, Giorgis Georgakoudis wrote:
On Fri, Aug 19, 2011 at 19:21, Greg KH <greg@kroah.com> wrote:
On Fri, Aug 19, 2011 at 11:20:44AM +0300, Giorgis Georgakoudis wrote: > Hello all, > > I would like to ask for some pointers regarding > porting Linux kernel multiprocessor support in > new platforms. More specifically, what are the > HW requirements that a platform must have to > enable Linux multiprocessing
It must have more than one processor and both must be able to see the same system "image" at the same time.
In fact, I'm trying to support multiprocessing in an experimental architecture of Microblazes on an FPGA. There isn't (HW) cache coherency and RAM is accessed through per processor dedicated buses, thus shared access locking must be realized either in a software manner or through a dedicated hardware mutex.
Ah, that's going to take some work, good luck with that.