linux-kernel - Re: [PATCH v1 3/4] powerpc/mm: remove linear mapping if __add_pages() fails in arch_add

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]

Date:   Wed, 4 Nov 2020 13:11:09 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Rashmica Gupta <rashmica.g@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Wei Yang <richard.weiyang@...ux.alibaba.com>
Subject: Re: [PATCH v1 3/4] powerpc/mm: remove linear mapping if
 __add_pages() fails in arch_add_memory()

On Wed, Nov 04, 2020 at 02:06:51PM +0200, Mike Rapoport wrote:
> On Wed, Nov 04, 2020 at 10:50:07AM +0100, osalvador wrote:
> > On Thu, Oct 29, 2020 at 05:27:17PM +0100, David Hildenbrand wrote:
> > > Let's revert what we did in case seomthing goes wrong and we return an
> > > error.
> > 
> > Dumb question, but should not we do this for other arches as well?
> 
> It seems arm64 and s390 already do that. 
> x86 could have its arch_add_memory() improved though :)

Right, I only stared at x86 and see it did not have it.
I guess we want to have all arches aligned with this.

Thanks

-- 
Oscar Salvador
SUSE L3