summaryrefslogtreecommitdiff
path: root/scripts/const_structs.checkpatch
diff options
context:
space:
mode:
authorNishanth Menon <[email protected]>2018-06-12 15:24:08 -0500
committerTom Rini <[email protected]>2018-06-29 11:30:39 -0400
commit7b37a9c732bfec392b8f081eefa83427f794f937 (patch)
treed8a4028443d814a1fa0181ef30445a271a3d7e3d /scripts/const_structs.checkpatch
parentfb77a9e3537039664ad42992bef6688869eda7c1 (diff)
ARM: Introduce ability to enable ACR::IBE on Cortex-A8 for CVE-2017-5715
As recommended by Arm in [1], IBE[2] has to be enabled unconditionally for BPIALL to be functional on Cortex-A8 processors. Provide a config option for platforms to enable this option based on impact analysis for products. NOTE: This patch in itself is NOT the final solution, this requires: a) Implementation of v7_arch_cp15_set_acr on SoCs which may not provide direct access to ACR register. b) Operating Systems such as Linux to provide adequate workaround in the right locations. c) This workaround applies to only the boot processor. It is important to apply workaround as necessary (context-save-restore) around low power context loss OR additional processors as necessary in either firmware support OR elsewhere in OS. [1] https://developer.arm.com/support/security-update [2] http://infocenter.arm.com/help/topic/com.arm.doc.ddi0344k/Bgbffjhh.html Cc: Marc Zyngier <[email protected]> Cc: Russell King <[email protected]> Cc: Tony Lindgren <[email protected]> Cc: Robin Murphy <[email protected]> Cc: Florian Fainelli <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: Christoffer Dall <[email protected]> Cc: Andre Przywara <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Tom Rini <[email protected]> Cc: Michael Nazzareno Trimarchi <[email protected]> Signed-off-by: Nishanth Menon <[email protected]> Tested-by: Fabio Estevam <[email protected]>
Diffstat (limited to 'scripts/const_structs.checkpatch')
0 files changed, 0 insertions, 0 deletions