linux-kernel - Re: [PATCH 1/2] MIPS: Allow MIPS32R2 kernel to run on P5600 and M5150

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: <alpine.DEB.2.21.2305301315120.42601@angie.orcam.me.uk>
Date:   Tue, 30 May 2023 13:16:32 +0100 (BST)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
cc:     Paul Cercueil <paul@...pouillou.net>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        linux-kernel@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: Re: [PATCH 1/2] MIPS: Allow MIPS32R2 kernel to run on P5600 and
 M5150

On Tue, 30 May 2023, Jiaxun Yang wrote:

> > Sure, but this change is not needed for it.  You just need to declare 
> > which ISA revisions your platform supports and leave `__get_cpu_type' 
> > alone.  It has worked like that for a decade now.
> 
> I’m afraid it won’t work as you expected.
> 
> Actually I ran into a problem that `case CPU_P5600` in c-r4k.c is optimised out
> by compiler, because the codepath is marked as unreachable.

 Maybe there's a bug elsewhere then.  Send me your .config and I'll try to 
reproduce it.

  Maciej