Messages in this thread | | | From | Jon Mason <> | Date | Wed, 8 May 2019 18:56:46 +0100 | Subject | Re: status of the calgary iommu driver |
| |
On Wed, May 8, 2019 at 6:52 PM Christoph Hellwig <hch@lst.de> wrote: > > On Wed, May 08, 2019 at 06:42:39PM +0100, Jon Mason wrote: > > These systems were plentiful for 2-4 years after the original series > > made it in. After that, the Intel and AMD IOMMUs should were shipped > > and were superior to this chip. So, even in systems where these might > > be present, the AMD/Intel ones should be used (unknown if they were > > shipped on the same ones, as both Muli and I have left IBM). > > > > You thinking about removing the code? > > I'm wondering if we could remove it. I've been done lots of > maintainance on various dma mapping and iommu drivers, and the calgary > one seems like it didn't get a whole lot of love, and I've not seen > any recent users, so I mostly wonder if I should bother at all.
I do have a system. So, it could be tested. However given the age of the HW, I would say it is not worth the effort to update and it would be best to remove it from the kernel.
I can send a patch to do this, unless you would prefer to do it (or already have something handy).
Thanks, Jon
| |