Re: [RFC 00/10] Process-local memory allocations for hiding KVM secrets

[Andy Lutomirski]

> On Jun 12, 2019, at 1:41 PM, Dave Hansen <dave.han...@intel.com> wrote:
> 
> On 6/12/19 1:27 PM, Andy Lutomirski wrote:
>>> We've discussed having per-cpu page tables where a given PGD is
>>> only in use from one CPU at a time.  I *think* this scheme still
>>> works in such a case, it just adds one more PGD entry that would
>>> have to context-switched.
>> Fair warning: Linus is on record as absolutely hating this idea. He
>> might change his mind, but it’s an uphill battle.
> 
> Just to be clear, are you referring to the per-cpu PGDs, or to this
> patch set with a per-mm kernel area?

per-CPU PGDs