On Wed Apr 24, 2024 at 2:50 PM EEST, Bojun Zhu wrote: > I still have some questions: > > It seems that the variable "ret" is set to 0 if there is **some** EPC pages have been > added when interrupted by signal(Supposed that sgx_encl_add_page() > always returns successfully). Ah, ok. Returning zero is right thing to do because it also returns count of pages successfully added. I.e. the function does not guarantee that all pages are processsed but it does guarantee that the system is in predictable state. It could be that e.g. sgx_alloc_epc_page() calls fails. So, it is a bit like how read system call works. BR, Jarkko
