On Thu, Oct 14, 2021 at 05:15:48PM +0800, Lin Ma wrote: > Since kernel v5.11, Unprivileged user (without SYS_CAP_PTRACE capability) > must pass UFFD_USER_MODE_ONLY to userfaultd in case unprivileged_userfaultfd > sysctl knob is 0. > Please refer to https://lwn.net/Articles/819834/ and the kernel commits: > 37cd0575 userfaultfd: add UFFD_USER_MODE_ONLY > d0d4730a userfaultfd: add user-mode only option to unprivileged_userfaultfd > sysctl knob > > This patch set adds a migration capability to pass UFFD_USER_MODE_ONLY > for postcopy migration.
Then it's at least no KVM, no vhost, am I right? Could I ask is there a real user behind this? Thanks, -- Peter Xu
