linux-kernel - Re: [PATCH V2 15/15] irqchip: bcm7120-l2: Enable big endian register accesses on BE kernels

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: <2482894.SCbMWLltbW@wuerfel>
Date:	Thu, 30 Oct 2014 10:03:16 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Kevin Cernekee <cernekee@...il.com>
Cc:	f.fainelli@...il.com, tglx@...utronix.de, jason@...edaemon.net,
	ralf@...ux-mips.org, lethal@...ux-sh.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	mbizon@...ebox.fr, jogo@...nwrt.org, linux-mips@...ux-mips.org
Subject: Re: [PATCH V2 15/15] irqchip: bcm7120-l2: Enable big endian register accesses on BE kernels

On Wednesday 29 October 2014 19:18:08 Kevin Cernekee wrote:
> 
> +       flags = IRQ_GC_INIT_MASK_CACHE;
> +       if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
> +               flags |= IRQ_GC_BE_IO;
> +
> 

As I said before, I think you should take this from a DT property instead
of making it dependent on the CPU endianess. Otherwise things go horribly
wrong e.g. when someone runs a big-endian kernel on one of the ARM
based chips.

	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/