From 44a5b6b5c7fee5146572b4c57f0d9d9c398d1033 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 14 Sep 2023 11:09:30 +0100 Subject: [PATCH] arm64: Document missing userspace visible fields in ID_AA64ISAR2_EL1 We have exposed a number of fields in ID_AA64ISAR2_EL1 to userspace without adding the matching documentation in cpu-feature-registers.rst, update it to match the implementation. Signed-off-by: Mark Brown Reviewed-by: Joey Gouly Link: https://lore.kernel.org/r/20230914-arm64-feat-hbc-doc-v1-2-797d25f06897@kernel.org Signed-off-by: Will Deacon --- Documentation/arch/arm64/cpu-feature-registers.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/arch/arm64/cpu-feature-registers.rst b/Documentation/arch/arm64/cpu-feature-registers.rst index 5e9ef91..de6d8a4 100644 --- a/Documentation/arch/arm64/cpu-feature-registers.rst +++ b/Documentation/arch/arm64/cpu-feature-registers.rst @@ -290,8 +290,18 @@ infrastructure: +------------------------------+---------+---------+ | Name | bits | visible | +------------------------------+---------+---------+ + | CSSC | [55-52] | y | + +------------------------------+---------+---------+ + | RPRFM | [51-48] | y | + +------------------------------+---------+---------+ + | BC | [23-20] | y | + +------------------------------+---------+---------+ | MOPS | [19-16] | y | +------------------------------+---------+---------+ + | APA3 | [15-12] | y | + +------------------------------+---------+---------+ + | GPA3 | [11-8] | y | + +------------------------------+---------+---------+ | RPRES | [7-4] | y | +------------------------------+---------+---------+ | WFXT | [3-0] | y | -- 2.7.4