[PATCH] Documentation: document /proc api for arm64 MTE vm flags

[Catalin Marinas]

Hi Jon,

On Fri, Nov 20, 2020 at 10:24:13PM +0000, Catalin Marinas wrote:
> On Fri, Nov 20, 2020 at 11:00:03AM -0700, Jonathan Corbet wrote:
> > On Fri, 20 Nov 2020 14:44:09 +0000
> > Catalin Marinas <catalin.marinas at arm.com> wrote:
> > 
> > > On Fri, Nov 06, 2020 at 10:19:40AM +0000, Szabolcs Nagy wrote:
> > > > Document that /proc/PID/smaps shows PROT_MTE settings in VmFlags.
> > > > Support for this was introduced in
> > > > 
> > > >   commit 9f3419315f3cdc41a7318e4d50ba18a592b30c8c
> > > >   arm64: mte: Add PROT_MTE support to mmap() and mprotect()
> > > > 
> > > > Signed-off-by: Szabolcs Nagy <szabolcs.nagy at arm.com>
> > > > Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
> > > > Cc: linux-doc at vger.kernel.org
> > > > ---
> > > >  Documentation/filesystems/proc.rst | 1 +
> > > >  1 file changed, 1 insertion(+)
> > > > 
> > > > diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
> > > > index 533c79e8d2cd..e5fa972d4c76 100644
> > > > --- a/Documentation/filesystems/proc.rst
> > > > +++ b/Documentation/filesystems/proc.rst
> > > > @@ -546,6 +546,7 @@ encoded manner. The codes are the following:
> > > >      nh    no huge page advise flag
> > > >      mg    mergable advise flag
> > > >      bt    arm64 BTI guarded page
> > > > +    mt    arm64 MTE allocation tags are enabled
> > > >      ==    =======================================
> > > >  
> > > >  Note that there is no guarantee that every flag and associated mnemonic will  
> > > 
> > > Are you ok with picking up this patch (it can be left for 5.11) or
> > > should I queue it in the arm64 tree?
> > 
> > It wasn't sent to me, so it wasn't on my radar.  Up to you, I'm happy to
> > grab it if you'd prefer.
> 
> Please do grab it. Thanks.

In case it slipped through the cracks (I haven't seen it in -next).
Otherwise I'll queue it sometime later this week for 5.11.

Thanks.

-- 
Catalin