On Fri, Jul 22, 2022 at 12:30:36PM -0700, Dave Hansen wrote:
> Sure does... *Something* has to manage the cache coherency so that old
> physical aliases of the converted memory don't write back and clobber
> new data. But, maybe the hardware is doing that now.
Let's hope.
> Yeah, that two-tier system is the way it's happening today from what
> I understand. This whole conversation is about how to handle the >4GB
> memory.
Would it be possible to pre-accept a bunch of mem - think "pre-fault" -
from userspace?
I.e., I'm thinking some huge process is going to start in the VM, VM
userspace goes and causes a chunk of memory to be pre-accepted and then
the process starts and runs more-or-less smoothly as the majority of its
memory has already been "prepared".
Or does that not make any sense from mm perspective?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
