Re: [PATCH V11 02/10] arm64/perf: Add BRBE registers and fields

From: Mark Rutland
Date: Tue Jun 13 2023 - 12:28:12 EST


On Wed, May 31, 2023 at 09:34:20AM +0530, Anshuman Khandual wrote:
> This adds BRBE related register definitions and various other related field
> macros there in. These will be used subsequently in a BRBE driver which is
> being added later on.
>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: Marc Zyngier <maz@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Tested-by: James Clark <james.clark@xxxxxxx>
> Reviewed-by: Mark Brown <broonie@xxxxxxxxxx>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
> ---
> arch/arm64/include/asm/sysreg.h | 103 +++++++++++++++++++++
> arch/arm64/tools/sysreg | 159 ++++++++++++++++++++++++++++++++
> 2 files changed, 262 insertions(+)

> +SysregFields BRBINFx_EL1

> +Enum 1:0 VALID
> + 0b00 NONE
> + 0b01 TARGET
> + 0b10 SOURCE
> + 0b11 FULL
> +EndEnum

This looks correct...

[...]

> +Sysreg BRBINFINJ_EL1 2 1 9 1 0

> +Enum 1:0 VALID
> + 0b00 NONE
> + 0b01 TARGET
> + 0b10 SOURCE
> + 0b00 FULL
> +EndEnum

... but this clearly isn't.

Mark.