On 18/06/15 14:14, Jan Beulich wrote:
> The number of slots per page being 511 (i.e. not a power of two) means
> that the (32-bit) read and write indexes going beyond 2^32 will likely
> disturb operation. Extend I/O req server creation so the caller can
> indicate that it is using suitable atomic accesses where needed (not
> all accesses to the two pointers really need to be atomic), allowing
> the hypervisor to atomically canonicalize both pointers when both have
> gone through at least one cycle.
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Acked-by: Ian Campbell <ian.campbell@citrix.com>

Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>