linux-kernel - Re: [PATCH v2 0/6] mm: Optimize mseal checks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALmYWFs0v07z5vheDt1h3hD+3--yr6Va0ZuQeaATo+-8MuRJ-g@mail.gmail.com>
Date: Thu, 8 Aug 2024 18:02:42 -0700
From: Jeff Xu <jeffxu@...gle.com>
To: Pedro Falcato <pedro.falcato@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
	Vlastimil Babka <vbabka@...e.cz>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, oliver.sang@...el.com, 
	torvalds@...ux-foundation.org, Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [PATCH v2 0/6] mm: Optimize mseal checks

On Thu, Aug 8, 2024 at 5:34 PM Pedro Falcato <pedro.falcato@...il.com> wrote:
>
> On Fri, Aug 9, 2024 at 12:12 AM Andrew Morton <akpm@...ux-foundation.org> wrote:
> >
> > On Wed,  7 Aug 2024 22:13:03 +0100 Pedro Falcato <pedro.falcato@...il.com> wrote:
> >
> > > This series also depends on (and will eventually very slightly conflict with)
> > > the powerpc series that removes arch_unmap[2].
> >
> > That's awkward.  Please describe the dependency?
>
> One of the transformations done in this patch series (patch 2) assumes
> that arch_unmap either doesn't exist or does nothing.
> PPC is the only architecture with an arch_unmap implementation, and
> through the series I linked they're going to make it work via
> ->close().
>
> What's the easiest way to deal with this? Can the PPC series go
> through the mm tree?
>
This patch can't be merged until arch_unmap() is all removed (ppc change)

Also I'm still doing a test/reviewing for this patch,  perhaps it is
better to wait till my test is done.

Thanks
-Jeff