On Thu, Mar 03, 2022 at 07:51:26PM +0000, Nadav Amit wrote: > Peter (et. al), > > I’ll send it in a more orderly fashion later, but let me know if I got > something completely wrong for the man page change: > > [ Thanks as usual; sorry - limited experience changing man pages ] > > -- >8 -- > > From: Nadav Amit <namit@xxxxxxxxxx> > Date: Thu, 3 Mar 2022 19:44:37 +0000 > Subject: [PATCH] ioctl_userfaultfd: add UFFD_FEATURE_EXACT_ADDRESS > > Describe the new UFFD_FEATURE_EXACT_ADDRESS API feature. > > Signed-off-by: Nadav Amit <namit@xxxxxxxxxx> > --- > man2/ioctl_userfaultfd.2 | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 > index 504f61d4b..2d065504e 100644 > --- a/man2/ioctl_userfaultfd.2 > +++ b/man2/ioctl_userfaultfd.2 > @@ -214,6 +214,12 @@ memory accesses to the regions registered with userfaultfd. > 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. > +.TP > +.BR UFFD_FEATURE_EXACT_ADDRESS " (since Linux 5.18)" > +If this feature bit is set, > +.I uffd_msg.pagefault.address > +will be set to the exact page-fault address that was reported by the hardware, > +and will not mask the offset within the page. > .PP > The returned > .I ioctls > -- > 2.25.1 Looks good to me, thanks! Acked-by: Peter Xu <peterx@xxxxxxxxxx> -- Peter Xu
