On Thu, Nov 05, 2015 at 09:57:25AM -0500, Lennart Sorensen wrote: > On Thu, Nov 05, 2015 at 09:51:59AM -0500, Lennart Sorensen wrote: > > Hmm, I thought I had read that as of 2.6.38 and higher arm systems were > > supposed to not generate the fault anymore, but maybe I misunderstood > > it and they meant it sets fixup to enabled by default. > > > > I should check the SCTLR.A flag. > > Of course the arm docs say it is off by default at reset, so something > in either u-boot or the kernel seems like it must have to enable it > explicitly. Well once I figure out how to read it I guess I will know. > > Of course if the memory happens to be flagged as something other than > normal memory, then it should also fault. I wonder if a page used to dma > data to/from a network driver would be flagged as normal memory or not.
Would using this cause such a problem: /usr/include/xenomai/native/heap.h:#define H_DMA 0x100 /* Use memory suitable for DMA. */ -- Len Sorensen _______________________________________________ Xenomai mailing list [email protected] http://xenomai.org/mailman/listinfo/xenomai
