Messages in this thread | | | Date | Mon, 8 Sep 2014 16:45:59 -0400 | From | Chris Metcalf <> | Subject | Re: bit fields && data tearing |
| |
On 9/8/2014 1:50 AM, James Bottomley wrote: > Actual alignment is pretty irrelevant. That's why all architectures > which require alignment also have to implement misaligned traps ... this > is a fundamental requirement of the networking code, for instance.
Can you clarify what you think the requirement is? The tile architecture doesn't support misaligned load/store in general, but we do support it for userspace (using a nifty JIT approach with a direct-map hash table kept in userspace), and also for get_user/put_user. But that's it, and, the networking subsystem works fine for us.
Occasionally we report bugs for driver code that doesn't use the get_unaligned_xxx() macros and friends, and our fixes are generally taken upstream.
-- Chris Metcalf, Tilera Corp. http://www.tilera.com
| |