On Mon Apr 29, 2024 at 4:22 PM EEST, Jarkko Sakkinen wrote: > On Mon Apr 29, 2024 at 4:04 PM EEST, Jarkko Sakkinen wrote: > > > Fix these two bugs (1) by returning VM_FAULT_NOPAGE to the generic Linux > > > fault handler so that no signal is sent to userspace, and (2) by > > > replacing sgx_encl_free_epc_page() with sgx_free_epc_page() so that no > > > EREMOVE is performed. > > > > What is the collateral damage caused by ENCLS[EREMOVE]? > > Have you measured cost of eremove on an empty page? > > I tried to lookup for a thread from lore because I have a faint memory > that it was concluded that its cost irrelevant. Please correct if I'm > wrong. Also pseudocode for EREMOVE supports this as it just returns without actually doing anything. BR, Jarkko
