linux-kernel - Re: [PATCH 03/03] ARM: Undelete KZM9D mach-type

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: <201205151909.47381.arnd@arndb.de>
Date:	Tue, 15 May 2012 19:09:47 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	Magnus Damm <magnus.damm@...il.com>,
	"Russell King - ARM Linux" <linux@....linux.org.uk>,
	horms@...ge.net.au, linux-sh@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>, rjw@...k.pl,
	lethal@...ux-sh.org, olof@...om.net,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 03/03] ARM: Undelete KZM9D mach-type

On Tuesday 15 May 2012, Grant Likely wrote:
> On Tue, 15 May 2012 08:32:09 +0000, Arnd Bergmann <arnd@...db.de> wrote:
> > On Monday 14 May 2012, Magnus Damm wrote:
> > > Right, I agree. Relying on a fixed DTB in an unreliable boot loader is
> > > the last thing I want to do.
> > > 
> > > So if your boot loader can't pass DTB to the kernel, and you want to
> > > have a single kernel supporting multiple boards, then do you see
> > > anything wrong with based on mach-type do a run time decision (in
> > > arch/arm/boot/compressed/) to override the ATAG from the boot loader
> > > with a compiled-in per-board DTB?
> > 
> > I know that we have discussed this in the past, but I don't remember
> > the outcome of the discussion, maybe someone else can help out here
> > (Grant?)
> > 
> > It's definitely technically possible to do it, but it could either be
> > that nobody has bothered to do the implementation, or that we had good
> > reasons against it and decided not to allow this.
> 
> Tony and I talked about this quite a bit during the last Connect.  The
> plan is to extend the existing bootwrapper ATAGs to DT code to allow
> appending multiple .dtbs to the zImage and selecting the correct one
> based on the machine number.  It shouldn't be very complicated, but I
> haven't had time to implement it.

Ok, good. so you are both on the same page then, Grant and Magnus.
I suppose you just need to coordinate then who is doing the work,
and it seems that Magnus is eager to prototype this.

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/