linux-kernel - Re: [PATCH v4 18/21] mm/mmap: Move can_modify

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Message-ID: <ttl2yp5nyri23keuzfwfywsgttglpzxizm5itjtftnlxmqnruc@4qyltsy6mqjy>
Date: Wed, 17 Jul 2024 10:07:26 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: Jeff Xu <jeffxu@...omium.org>
Cc: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>, Lorenzo Stoakes <lstoakes@...il.com>,
        Matthew Wilcox <willy@...radead.org>, sidhartha.kumar@...cle.com,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Bert Karwatzki <spasswolf@....de>, Jiri Olsa <olsajiri@...il.com>,
        linux-kernel@...r.kernel.org, Kees Cook <kees@...nel.org>
Subject: Re: [PATCH v4 18/21] mm/mmap: Move can_modify_mm() check down the
 stack

* Jeff Xu <jeffxu@...omium.org> [240717 01:03]:
> Hi
> 
> On Wed, Jul 10, 2024 at 12:23 PM Liam R. Howlett
> <Liam.Howlett@...cle.com> wrote:
> >
> > From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
> >
> > Without an arch_unmap() call anymore,
> Is there another patch that removes arch_unmap() ?
> Can you please post the link for the patch ?
> 

Thanks for looking at this patch.

The patch to remove arch_unmap() cannot be used as powerpc needs a
replacement.  I will be moving the arch_unmap() call later in the unmap
process like it was before mpx moved it (mpx has been dropped from the
kernel).  I will add you to the Cc for the whole series next time.

Thanks,
Liam