[PATCH 4.14 041/119] arm64: Documentation: cpu-feature-registers: Remove RES0 fields
From: Greg Kroah-Hartman
Date: Sun Oct 27 2019 - 17:35:43 EST
From: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
[ Upstream commit 847ecd3fa311cde0f10a1b66c572abb136742b1d ]
Remove the invisible RES0 field entries from the table, listing
fields in CPU ID feature registers, as :
1) We are only interested in the user visible fields.
2) The field description may not be up-to-date, as the
field could be assigned a new meaning.
3) We already explain the rules of the fields which are not
visible.
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Reviewed-by: Dave Martin <dave.martin@xxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
[ardb: fix up for missing SVE in context]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/arm64/cpu-feature-registers.txt | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
--- a/Documentation/arm64/cpu-feature-registers.txt
+++ b/Documentation/arm64/cpu-feature-registers.txt
@@ -110,7 +110,6 @@ infrastructure:
x--------------------------------------------------x
| Name | bits | visible |
|--------------------------------------------------|
- | RES0 | [63-52] | n |
|--------------------------------------------------|
| FHM | [51-48] | y |
|--------------------------------------------------|
@@ -124,8 +123,6 @@ infrastructure:
|--------------------------------------------------|
| RDM | [31-28] | y |
|--------------------------------------------------|
- | RES0 | [27-24] | n |
- |--------------------------------------------------|
| ATOMICS | [23-20] | y |
|--------------------------------------------------|
| CRC32 | [19-16] | y |
@@ -135,8 +132,6 @@ infrastructure:
| SHA1 | [11-8] | y |
|--------------------------------------------------|
| AES | [7-4] | y |
- |--------------------------------------------------|
- | RES0 | [3-0] | n |
x--------------------------------------------------x
@@ -144,7 +139,8 @@ infrastructure:
x--------------------------------------------------x
| Name | bits | visible |
|--------------------------------------------------|
- | RES0 | [63-28] | n |
+ |--------------------------------------------------|
+ | SVE | [35-32] | y |
|--------------------------------------------------|
| GIC | [27-24] | n |
|--------------------------------------------------|