Re: [PATCH v3] nvme-pci: Support shared tags across queues for Apple 2018 controllers

From: Benjamin Herrenschmidt
Date: Tue Aug 06 2019 - 01:24:57 EST


On Mon, 2019-08-05 at 07:49 -0600, Keith Busch wrote:
> > Ping ? I had another look today and I don't feel like mucking around
> > with all the AQ size logic, AEN magic tag etc... just for that sake of
> > that Apple gunk. I'm happy to have it give up IO tags, it doesn't seem
> > to make much of a difference in practice anyway.
> >
> > But if you feel strongly about it, then I'll implement the "proper" way
> > sometimes this week, adding a way to shrink the AQ down to something
> > like 3 (one admin request, one async event (AEN), and the empty slot)
> > by making a bunch of the constants involved variables instead.
>
> I don't feel too strongly about it. I think your patch is fine, so
>
> Acked-by: Keith Busch <keith.busch@xxxxxxxxx>

Thanks, I'll fold the test and respin this week.

Cheers,
Ben.