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 <jbeul...@suse.com> > Acked-by: Ian Campbell <ian.campb...@citrix.com>
Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com>
_______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
