tree a4ccb198bcf5276a73ebe3eaef4e51c8e8b092db
parent c4681547bcce777daf576925a966ffa824edd09d
author Mark Brown <broonie@kernel.org> 1620836630 +0100
committer Will Deacon <will@kernel.org> 1621965928 +0100

arm64: Document requirement for access to FEAT_HCX

v8.7 of the architecture introduced FEAT_HCX which adds an additional
hypervisor configuration register HCRX_EL2. Even though Linux does not
currently make use of this feature let's document that the EL3 trap for
access to the register should be disabled so that we are able to make
use of it in future.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210512162350.20349-1-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>