On 8/20/20 11:12 AM, Christoph Hellwig wrote: > On Thu, Aug 20, 2020 at 11:10:58AM -0600, Jens Axboe wrote: >> To be fair, I've only heard this one complaint about it, so hopefully it's >> not too widespread. I'm on an x86-64 laptop myself with nvme, and it works >> just fine :-) > > The cause for this is the weird NVMe of by ones, where 0 in a field > means 1. So for the overflow to happen you need a controller that > supports USHORT_MAX queue entries. Which don't seem to be all that > common.
Yeah, don't think I've ever seen those. I come across 1023 and 128 all the time, but I don't have one in my arsenal of NVMe drives that is any different than those two. -- Jens Axboe
