[PATCH AUTOSEL 6.1 13/29] nouveau/tu102: flush all pdbs on vmm flush

[Timur Tabi]

On Mon, 2023-12-11 at 08:53 -0500, Sasha Levin wrote:
> This is a hack around a bug exposed with the GSP code, I'm not sure
> what is happening exactly, but it appears some of our flushes don't
> result in proper tlb invalidation for out BAR2 and we get a BAR2
> fault from GSP and it all dies.

Do we still want this hack on older kernels that don't support GSP?