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2024-10-08util/userfaultfd: Remove unused uffd_poll_eventsDr. David Alan Gilbert1-1/+0
uffd_poll_events has been unused since it was added; it's also just a wrapper around a plain old poll call, so doesn't add anything. Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org> Reviewed-by: Peter Xu <peterx@redhat.com> Link: https://lore.kernel.org/r/20240919134626.166183-8-dave@treblig.org Signed-off-by: Peter Xu <peterx@redhat.com>
2023-02-08migration: Clean up includesMarkus Armbruster1-1/+0
This commit was created with scripts/clean-includes. All .c should include qemu/osdep.h first. The script performs three related cleanups: * Ensure .c files include qemu/osdep.h first. * Including it in a .h is redundant, since the .c already includes it. Drop such inclusions. * Likewise, including headers qemu/osdep.h includes is redundant. Drop these, too. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20230202133830.2152150-12-armbru@redhat.com> [Straightforward conflict with commit d5890ea0722 resolved]
2023-02-06util/userfaultfd: Add uffd_open()Peter Xu1-0/+12
Add a helper to create the uffd handle. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2021-02-08migration: introduce UFFD-WP low-level interface helpersAndrey Gruzdev1-0/+35
Glue code to the userfaultfd kernel implementation. Querying feature support, createing file descriptor, feature control, memory region registration, IOCTLs on registered registered regions. Signed-off-by: Andrey Gruzdev <andrey.gruzdev@virtuozzo.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <20210129101407.103458-3-andrey.gruzdev@virtuozzo.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Fixed up range.start casting for 32bit