Re: [PATCH 4/5] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs

Michael Kerrisk (man-pages)
2021-04-05T21:13:27Z

Hello Alex, Peter.

On 4/5/21 3:13 PM, Alejandro Colomar wrote:
> From: Peter Xu <peterx@redhat.com>
>
> UFFD_FEATURE_THREAD_ID is supported in Linux 4.14.
>
> Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>

Patch applied.

Thanks,

Michael

> ---
> man2/ioctl_userfaultfd.2 | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
> index 9120bdf40..014c0b5c1 100644
> --- a/man2/ioctl_userfaultfd.2
> +++ b/man2/ioctl_userfaultfd.2
> @@ -208,6 +208,11 @@ signal will be sent to the faulting process.
> Applications using this
> feature will not require the use of a userfaultfd monitor for processing
> memory accesses to the regions registered with userfaultfd.
> +.TP
> +.BR UFFD_FEATURE_THREAD_ID " (since Linux 4.14)"
> +If this feature bit is set,
> +.I uffd_msg.pagefault.feat.ptid
> +will be set to the faulted thread ID for each page fault message.
> .PP
> The returned
> .I ioctls