On 9/25/25 12:20, David Hildenbrand wrote: > On 25.09.25 20:27, Dave Hansen wrote: >> On 9/24/25 08:22, Roy, Patrick wrote: >>> Add an option to not perform TLB flushes after direct map manipulations. >> >> I'd really prefer this be left out for now. It's a massive can of worms. >> Let's agree on something that works and has well-defined behavior before >> we go breaking it on purpose. > > May I ask what the big concern here is?
It's not a _big_ concern. I just think we want to start on something like this as simple, secure, and deterministic as possible. Let's say that with all the unmaps that load_unaligned_zeropad() faults start to bite us. It'll take longer to find them if the TLB isn't flushed. Basically, it'll make the bad things happen sooner rather than later.
