31 Mar
2021
31 Mar
'21
1:46 p.m.
On Thu, Apr 01, 2021 at 12:27:52AM +1100, Alistair Popple wrote:
On Thursday, 1 April 2021 12:18:54 AM AEDT Jason Gunthorpe wrote:
On Wed, Mar 31, 2021 at 11:59:28PM +1100, Alistair Popple wrote:
I guess that makes sense as the split could go either way at the moment but I should add a check to make sure this isn't used with pinned pages anyway.
Is it possible to have a pinned page under one of these things? If I pin it before you migrate it then it remains pinned but hidden under the swap entry?
At the moment yes. But I had planned (and this reminded me) to add a check to prevent marking pinned pages for exclusive access.
How do you even do that without races with GUP fast?
Jason