On Tue, Jan 10, 2023 at 1:12 PM Alejandro Colomar <alx.manpages@xxxxxxxxx> wrote: > > Hi Nick and Suren! > > On 1/10/23 22:02, Suren Baghdasaryan wrote: > > On Sat, Jan 7, 2023 at 2:19 PM Nick Gregory <nick@xxxxxxxxxxxxxx> wrote: > >> > >> Bring in man page changes from the patch set by Colin Cross > >> <ccross@xxxxxxxxxx> [0], and document the corresponding virtual names in > >> procfs. > > > > Hi Nick, > > The content LGTM (not an expert in formatting). > > The formatting is perfect, AFAICS. :) > > > You even captured the > > recent addition of named shared anonymous mapping support (CC'ing > > Pasha)! Thanks for doing this! > > Do you want me to wait for him to have a look, or should I just apply? I CC'ed Pasha as FYI. I don't think he will have any objections. Thanks for checking! > > > > >> > >> Signed-off-by: Nick Gregory <nick@xxxxxxxxxxxxxx> > >> Cc: Colin Cross <ccross@xxxxxxxxxx> > >> Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx> > >> Cc: Kees Cook <keescook@xxxxxxxxxxxx> > > > > Reviewed-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> > > Thanks for the patch and the review! > > Cheers, > > Alex > > > > >> > >> [0] https://lore.kernel.org/linux-mm/20211019215511.3771969-2-surenb@xxxxxxxxxx/ > >> --- > >> man2/prctl.2 | 34 ++++++++++++++++++++++++++++++++++ > >> man5/proc.5 | 14 ++++++++++++++ > >> 2 files changed, 48 insertions(+) > >> > >> diff --git a/man2/prctl.2 b/man2/prctl.2 > >> index 74f86ff49..2c8d52ade 100644 > >> --- a/man2/prctl.2 > >> +++ b/man2/prctl.2 > >> @@ -769,6 +769,40 @@ This feature is available only if the kernel is built with the > >> .B CONFIG_CHECKPOINT_RESTORE > >> option enabled. > >> .RE > >> +.\" prctl PR_SET_VMA > >> +.TP > >> +.BR PR_SET_VMA " (since Linux 5.17)" > >> +.\" Commit 9a10064f5625d5572c3626c1516e0bebc6c9fe9b > >> +Sets an attribute specified in > >> +.I arg2 > >> +for virtual memory areas starting from the address specified in > >> +.I arg3 > >> +and spanning the size specified in > >> +.IR arg4 . > >> +.I arg5 > >> +specifies the value of the attribute to be set. > >> +.IP > >> +Note that assigning an attribute to a virtual memory area > >> +might prevent it from being merged with adjacent virtual memory areas > >> +due to the difference in that attribute's value. > >> +.IP > >> +Currently, > >> +.I arg2 > >> +must be one of: > >> +.RS > >> +.TP > >> +.B PR_SET_VMA_ANON_NAME > >> +Set a name for anonymous virtual memory areas. > >> +.I arg5 > >> +should be a pointer to a null-terminated string containing the name. > >> +The name length including null byte cannot exceed 80 bytes. > >> +If > >> +.I arg5 > >> +is NULL, the name of the appropriate anonymous virtual memory areas > >> +will be reset. > >> +The name can contain only printable ascii characters (including space), > >> +except \(aq[\(aq, \(aq]\(aq, \(aq\e\(aq, \(aq$\(aq, and \(aq\(ga\(aq. > >> +.RE > >> .\" prctl PR_MPX_ENABLE_MANAGEMENT > >> .TP > >> .BR PR_MPX_ENABLE_MANAGEMENT ", " PR_MPX_DISABLE_MANAGEMENT " (since Linux 3.19, removed in Linux 5.4; only on x86)" > >> diff --git a/man5/proc.5 b/man5/proc.5 > >> index 65a4c38e3..e0a64d486 100644 > >> --- a/man5/proc.5 > >> +++ b/man5/proc.5 > >> @@ -1372,6 +1372,20 @@ See > >> .TP > >> .I [heap] > >> The process's heap. > >> +.TP > >> +.IR [anon: name ] " (since Linux 5.17)" > >> +.\" Commit 9a10064f5625d5572c3626c1516e0bebc6c9fe9b > >> +A named private anonymous mapping. > >> +Set with > >> +.BR prctl (2) > >> +.BR PR_SET_VMA_ANON_NAME . > >> +.TP > >> +.IR [anon_shmem: name ] " (since Linux 6.2)" > >> +.\" Commit d09e8ca6cb93bb4b97517a18fbbf7eccb0e9ff43 > >> +A named shared anonymous mapping. > >> +Set with > >> +.BR prctl (2) > >> +.BR PR_SET_VMA_ANON_NAME . > >> .in > >> .RE > >> .IP > >> -- > >> 2.39.0 > >> > > -- > <http://www.alejandro-colomar.es/>
