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arm64: Documentation: cpu-feature-registers: Remove RES0 fields

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[ 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@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
[ardb: fix up for missing SVE in context]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2019-10-24 14:47:50 +02:00 committed by Greg Kroah-Hartman
parent 1caa4f72df
commit eb952c6bce
1 changed files with 2 additions and 6 deletions
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8
Documentation/arm64/cpu-feature-registers.txt
View File

@ -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 |
|--------------------------------------------------|