Re: [PATCH v2 04/18] x86/sgx: Use sgx_epc_lru_lists for existing active page list

From: Dave Hansen
Date: Fri Dec 02 2022 - 16:44:22 EST


On 12/2/22 10:36, Kristen Carlson Accardi wrote:
> + spin_lock(&sgx_global_lru.lock);
> for (i = 0; i < SGX_NR_TO_SCAN; i++) {
> - if (list_empty(&sgx_active_page_list))
> + epc_page = sgx_epc_pop_reclaimable(&sgx_global_lru);
> + if (!epc_page)
> break;

One other nit about the structure of the patches: This introduced *both*
reclaimable and unreclaimable list_heads. But, it has zero use for the
unreclaimable ones during the refactoring here. I probably would have
left out the 'unreclaimable' bits for now.

BTW, this is a nice sign:

> arch/x86/kernel/cpu/sgx/main.c | 39 +++++++++++++++++-----------------
> 1 file changed, 19 insertions(+), 20 deletions(-)