On Tue, Dec 09, 2014 at 10:29:05AM +0000, Russell King - ARM Linux wrote: > On Tue, Dec 09, 2014 at 11:19:40AM +0100, Arend van Spriel wrote: > > The issue did not trigger overnight so it seems setting bit 22 <Shared > > Attribute _Override_ Enable> solves the issue over here. Now the question is > > how to move forward with this. As I understood from Catalin this patch was > > not included as it was not considered responsibility of the linux kernel. > > It is preferable for firmware to configure the L2 cache appropriately, > which includes things like the prefetch offsets as well as feature bits > like bit 22. > > I think what I'll do is queue up a patch which adds a warning if bit 22 > is not set, suggesting that firmware is updated to set this bit. I'm fine with a (big) warning on this bit. But when you boot in secure mode on 32-bit, do we still have a read/modify/write sequence for L2X0_AUX_CTRL? A quick look at l2c310_enable() didn't reveal this (the code has changed since I proposed the bit 22 setting patch). -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
