CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS and bcm2835_defconfig

Russell King - ARM Linux linux at arm.linux.org.uk
Wed Mar 12 07:03:16 EDT 2014


On Tue, Mar 11, 2014 at 10:35:24PM -0600, Stephen Warren wrote:
> Hmm. I thought that ARMv6 didn't have efficient unaligned accesses, but
> I suppose it must; ARM selects HAVE_EFFICIENT_UNALIGNED_ACCESS for
> v6/v6k/v7. BUILTIN_BSWAP seems innocuous. Can you verify which of those
> two options actually causes problems for you?

What do you think is different between v6 and v7 for unaligned accesses?

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