linux-kernel - Re: [PATCH v2 1/3] ARM: Make FORCE_MAX_ZONEORDER configurable if ARM_SINGLE

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:	Tue, 8 Sep 2015 23:19:13 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, olof@...om.net, khilman@...nel.org,
	afaerber@...e.de, u.kleine-koenig@...gutronix.de,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] ARM: Make FORCE_MAX_ZONEORDER configurable if
 ARM_SINGLE_ARMV7M

On Tue, Sep 08, 2015 at 10:38:04PM +0200, Maxime Coquelin wrote:
> This patch makes FORCE_MAX_ZONEORDER configurable in defconfig for ARMV7-M
> when built for a single platform.

I'd prefer if we didn't do this, because this isn't supposed to be a user
visible "option".  It's an option that was introduced to avoid having to
throw masses of #ifdefs into the definition of MAX_ZONEORDER.

The problem with it is that it's a "well, what do I set this to?" option
and that leads to "oh, I'll just choose the default because I don't know
any better".

Do we know why EFM32 needs a value of 9 here?  It's not documented in
the original commit, and it really _should_ have been.

-- 
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
--
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/