Re: [PATCH] mm/gup: restore the ability to pin more than 2GB at a time

[Christoph Hellwig]

On Tue, Oct 29, 2024 at 09:39:15PM -0700, John Hubbard wrote:
> I expect I could piece together something with Nouveau, given enough
> time and help from Ben Skeggs and Danillo and all...
> 
> Yes, this originated with the out of tree driver. But it never occurred
> to me that upstream be uninterested in an obvious fix to an obvious
> regression.

Because pinning down these amounts of memoryt is completely insane.
I don't mind the switch to kvmalloc, but we need to put in an upper
bound of what can be pinned.