linux-kernel - Re: [PATCH v1 01/11] ARM: amba: Add Qualcomm vendor ID.

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: <CACRpkdbex_0jmx5cL0uLcMcGBvhwfAmNssz4xNQuJ+3d=Dv1zg@mail.gmail.com>
Date:	Thu, 22 May 2014 23:54:11 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	agross@...cinc.com,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH v1 01/11] ARM: amba: Add Qualcomm vendor ID.

On Fri, May 16, 2014 at 6:43 PM, Stephen Boyd <sboyd@...eaurora.org> wrote:
> On 05/16/14 09:24, Linus Walleij wrote:
>> On Wed, May 14, 2014 at 12:13 AM, Stephen Boyd <sboyd@...eaurora.org> wrote:
>>
>>> Please add a note that this id is fake in the commit text or in
>>> the code as well.
>> You just need one of your hardware engineers to add is to one instance
>> of some test chip round so it exists in any hardware whatsoever and it
>> is not "fake" anymore...
>>
>> This is a bit like device tree, it's defined by the kernel community as much
>> as by the hardware engineers and it's a little bit of back-and-forth.
>>
>
> Sure, but hardware teams have moved on from this IP so I doubt we can
> even get them to put it into a test chip. In fact, the devices a
> generation before the ones Srini is working on (msm8660 for example)
> have a periph ID of 0x41180 so we need to override that ID in DT with
> this fake ID for things to even work.

Hehe I wasn't really suggesting doing that.

The point was to illustrate how fragile the border between "real"
and "fake" is in these cases.

Yours,
Linus Walleij
--
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/