[PATCH V2 0/3] aarch64: Enable access for FEAT_D128 registers in EL1/EL2
Anshuman Khandual
anshuman.khandual at arm.com
Sun Jul 28 21:40:32 PDT 2024
On 7/29/24 10:06, Anshuman Khandual wrote:
> This series enables access for FEAT_D128 relevant registers in EL1/EL2 via
> setting respective bits in SCR_EL3, when their corresponding features are
> detected.
>
> --------------------------------------------------------------
> | FEAT_D128 | ID_AA64MMFR3_EL1_D128 | SCR_EL3_D128En |
> | FEAT_SCTLR2 | ID_AA64MMFR3_EL1_SCTLRX | SCR_EL3_SCTLR2En |
> | FEAT_THE | ID_AA64PFR1_EL1_THE | SCR_EL3_RCWMASKEn |
> --------------------------------------------------------------
>
> Changes in V2:
>
> - Moved up the patch related to SCTLR2_ELx from [PATCH 2/3] to [PATCH 1/3]
> - Updated the commit message for the above mentioned patch
> - Fixed the commit message s/D128En/SCTLR2En as the enabling bit
> - Reset SCTLR2_ELx registers so that unaware kernels do not get surprises
>
> Changes in V1:
>
> https://lore.kernel.org/all/20240723110630.483871-1-anshuman.khandual@arm.com/
>
> Anshuman Khandual (3):
> aarch64: Enable access into SCTLR2_ELx registers from EL2 and below
> aarch64: Enable access into 128 bit system registers from EL2 and below
> aarch64: Enable access into RCW[S]MASK_EL1 registers from EL2 and below
>
> arch/aarch64/include/asm/cpu.h | 11 ++++++++++-
> arch/aarch64/init.c | 12 ++++++++++++
> 2 files changed, 22 insertions(+), 1 deletion(-)
>
Oops, forgot to change PATCH as boot-wrapper for differentiation once again.
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