On Thu, Dec 10, 2015 at 3:20 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Thursday 10 December 2015 15:14:15 Linus Walleij wrote: >> Some RealView platforms have broken outer_sync, see: >> http://marc.info/?l=linux-kernel&m=144846940516899&w=2 >> >> We got rid of the custom barriers from the machine by disabling >> outer sync, but that was just for the boardfile case. We have >> to be able to do the same in the device tree case. >> >> Since __l2c_init() is cloning and copying the L2C vtable, >> we pass an argument to this function to optionally numb >> the outer sync operation if desired, before initializing >> the cache. >> >> After this we can set up the cache correctly on the RealView >> PB11MPCore, and it boots rock solid with the cache enabled. >> Before this, spurious crashes would occur if we try to set >> up the cache properly. >> >> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> >> Cc: Arnd Bergmann <arnd@xxxxxxxx> >> Cc: devicetree@xxxxxxxxxxxxxxx >> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > > This has the same effect as my "ARM: realview: remove private barrier > implementation" patch and replaces part of that, correct? Yes, but applied to a DT-only bootpath with a minimum of board file code, kept in l2x0.c just this bool in the DT node. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
