linux-kernel - Re: [PATCH v4 1/2] lib: devres: add a helper function for ioremap

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: <c4bcdf14e0a60a679429eebd439b2380d97dafe9.camel@gmail.com>
Date:   Mon, 14 Oct 2019 13:15:53 -0600
From:   Tuowen Zhao <ztuowen@...il.com>
To:     lee.jones@...aro.org, linux-kernel@...r.kernel.org,
        AceLan Kao <acelan.kao@...onical.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: Re: [PATCH v4 1/2] lib: devres: add a helper function for ioremap_uc

On Tue, 2019-10-15 at 02:46 +0800, kbuild test robot wrote:
> -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.4.0 make.cross ARCH=sparc64 

Oops, I'm not sure how would we best fix this. Clearly the patch is not
intended for sparc64. Maybe adding devm_ioremap_uc is rather not safe
right now.

Although, We could declare dummies for these architectures like it has
been for powerpc.

I just noticed another driver having this issue, and fixed with direct
calls to ioremap_uc().

3cc2dac5be3f2: drivers/video/fbdev/atyfb: Replace MTRR UC hole with
strong UC

Tuowen