arm64: protect alternatives workarounds with Kconfig options

Browse source

Not all of the errata we have workarounds for apply necessarily to all
SoCs, so people compiling a kernel for one very specific SoC may not
need to patch the kernel.
Introduce a new submenu in the "Platform selection" menu to allow
people to turn off certain bugs if they are not affected. By default
all of them are enabled.
Normal users or distribution kernels shouldn't bother to deselect any
bugs here, since the alternatives framework will take care of
patching them in only if needed.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[will: moved kconfig menu under `Kernel Features']
Signed-off-by: Will Deacon <will.deacon@arm.com>

Cc: <stable@vger.kernel.org> # v3.18.y
(cherry picked from commit c0a01b84b1)
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

This commit is contained in:

Andre Przywara 2015-04-24 10:30:50 -07:00 • committed by Sasha Levin

parent e51ce83faf

commit 62ef31e125

2 changed files with 122 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

108

arch/arm64/Kconfig

View file

14

arch/arm64/kernel/cpu_errata.c

View file