On Tue, Apr 15, 2025 at 02:51:21PM +0300, Elena Reshetova wrote: > Note: The serialization for sgx_nr_total_pages is not needed because > the variable is only updated during the initialization and there's no > concurrent access.
No. It's - not a side-note but core part of the rationale. - the reasoning here is nonsense, or more like it does not exist at all. sgx_nr_free_pages can be substituted with sgx_nr_used_pages at the sites where sgx_free_pages was previously used *exactly* because sgx_reclaimer_init() is called only after sgx_page_cache_init(). This gives the invariant of it to be constant whenever sgx_alloc_epc_page() is called. These type of changes give a proof of the legitimity of the invariant, which I addressed here. BR, Jarkko
