On Mon, 2021-09-13 at 09:11 -0400, Paolo Bonzini wrote: > Windows expects all pages to be in uninitialized state on startup. > In order to implement this, we will need a ioctl that performs > EREMOVE on all pages mapped by a /dev/sgx_vepc file descriptor: > other possibilities, such as closing and reopening the device, > are racy. So what makes it racy, and what do mean by racy in this case? I.e. you have to do open() and mmap(), and munmap() + close() for removal. Depending on situation that is racy or not... And is "Windows" more precisely a "Windows guest running in Linux QEMU host"? It's ambiguous.. /Jarkko