tree d17838e0b7e96b777a1adfc6902d42d92971e31f
parent f992b4dfd58be07e31a42bc940a53b3e4b282616
author Marc Zyngier <marc.zyngier@arm.com> 1517227196 +0000
committer Catalin Marinas <catalin.marinas@arm.com> 1517957600 +0000

arm64: Force KPTI to be disabled on Cavium ThunderX

Cavium ThunderX's erratum 27456 results in a corruption of icache
entries that are loaded from memory that is mapped as non-global
(i.e. ASID-tagged).

As KPTI is based on memory being mapped non-global, let's prevent
it from kicking in if this erratum is detected.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
[will: Update comment]
Signed-off-by: Will Deacon <will.deacon@arm.com>

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>