lkml.org 
[lkml]   [2022]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 4/5] modules: Add CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
On Thu, Jan 27, 2022 at 11:28:09AM +0000, Christophe Leroy wrote:
> Add CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC to allow architectures
> to request having modules data in vmalloc area instead of module area.
>
> This is required on powerpc book3s/32 in order to set data non
> executable, because it is not possible to set executability on page
> basis, this is done per 256 Mbytes segments. The module area has exec
> right, vmalloc area has noexec.
>
> This can also be useful on other powerpc/32 in order to maximize the
> chance of code being close enough to kernel core to avoid branch
> trampolines.
>
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
> Cc: Jason Wessel <jason.wessel@windriver.com>
> Cc: Daniel Thompson <daniel.thompson@linaro.org>
> Cc: Douglas Anderson <dianders@chromium.org>

Thanks for diligence in making sure kdb is up to date!

Acked-by: Daniel Thompson <daniel.thompson@linaro.org>


Daniel.

\
 
 \ /
  Last update: 2022-01-28 15:10    [W:0.093 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site