Re: [PATCH v2 05/18] x86/sgx: Track epc pages on reclaimable or unreclaimable lists

From: Sean Christopherson
Date: Fri Dec 02 2022 - 17:29:02 EST


On Fri, Dec 02, 2022, Dave Hansen wrote:
> On 12/2/22 10:36, Kristen Carlson Accardi wrote:
> > Replace functions sgx_mark_page_reclaimable() and
> > sgx_unmark_page_reclaimable() with sgx_record_epc_page() and
> > sgx_drop_epc_page(). sgx_record_epc_page() wil add the epc_page
> > to the correct "reclaimable" or "unreclaimable" list in the
> > sgx_epc_lru_lists struct. sgx_drop_epc_page() will delete the page
> > from the LRU list. Tracking pages that are not tracked by
> > the reclaimer in the sgx_epc_lru_lists "unreclaimable" list allows
> > an OOM event to cause all the pages in use by an enclave to be freed,
> > regardless of whether they were reclaimable pages or not.
>
> This might be more a comment about Sean's stuff

Anything with a single space after a period wasn't written by me, I'm a devout
believer of two spaces :-)