On Mon, May 18, 2015 at 6:34 PM, William Hermans <yyrk...@gmail.com> wrote: > Robert, > > So whats up with the LPAE kernel versions ? From what I've read this > "extension" is only for Cortex A15 ( 40 bit addressing ), and typically / > always this only matters for systems with more than 4GB( addressable ) RAM. > > The beaglebone black only has 512MB, so is moot, and the X15 from what I > understand will only have 2GB RAM ? Plus it's not a "bone"
Large Physical Address Extensions (LPAE) is the main identifier, but the Cortex-A7/A12/A15/A17 also have hardware virturalization support. > > Also while on the subject, what are these *-armv7-x0 kernels ? Searching > the web is not very forthcoming. LPAE was kind of obvious, just was not > aware that it was an "ARM extension". The armv7 label just matches up with ARM: ARMv7-A instruction set architecture. Any Cortex-Ax device should boot with it. btw, the config delta between armv7 & bone is getting smaller with every kernel release. In v4.1-rcX erratum 430973 (thumb2 r1pX omap3/dm3730) was minimized to only affect performance on affected cores. So it doesn't slow down none Cortex-A8 devices anymore. And cores such as am335x (r3px) which we enable thumb2 across the board (bone kernel) aren't affected as much.. Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
