Hi ----- Original Message ----- > On Mon, Oct 23, 2017 at 10:59:08AM +0100, Marc-André Lureau wrote: > > Linux commit 749df87bd7bee5a79cef073f5d032ddb2b211de8 (v4.14-rc1) > > added a new flag MFD_HUGETLB to memfd_create() that specify the file > > to be created resides in the hugetlbfs filesystem. This is the > > generic hugetlbfs filesystem not associated with any specific mount > > point. > > How do you know and/or control what size huge pages are used, > when the platform supports many sizes ?
>From linux commit message: "As with other system calls that request hugetlbfs backed pages, there is the ability to encode huge page size in the flag arguments." I didn't add this option to memfd backend, as I don't know how generally useful that is, and if there is already a similar option in qemu (probably not?). It could be easily added later. > > Regards, > Daniel > -- > |: https://berrange.com -o- https://www.flickr.com/photos/dberrange > |:| > |: https://libvirt.org -o- https://fstop138.berrange.com > |:| > |: https://entangle-photo.org -o- https://www.instagram.com/dberrange > |:| >
