[PATCH 11/16] arm64: errata: Clean up midr range helpers
Dave Martin
Dave.Martin at arm.com
Fri Jan 26 05:50:13 PST 2018
On Tue, Jan 23, 2018 at 12:28:04PM +0000, Suzuki K Poulose wrote:
> We are about to introduce generic MIDR range helpers. Clean
> up the existing helpers in errat handling, preparing them
errata/erratum
> to use generic version.
>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
> ---
> arch/arm64/kernel/cpu_errata.c | 76 +++++++++++++++++++++++-------------------
> 1 file changed, 41 insertions(+), 35 deletions(-)
>
> diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
> index 550ac8a0854b..054b17009f41 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -179,14 +179,23 @@ static int qcom_enable_link_stack_sanitization(
> }
> #endif /* CONFIG_HARDEN_BRANCH_PREDICTOR */
>
> -#define MIDR_RANGE(model, min, max) \
> +#define ERRATA_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \
> .type = ARM64_CPUCAP_STRICT_CPU_LOCAL_ERRATUM, \
> .matches = is_affected_midr_range, \
> .midr_model = model, \
> - .midr_range_min = min, \
> - .midr_range_max = max
> + .midr_range_min = MIDR_CPU_VAR_REV(v_min, r_min), \
> + .midr_range_max = MIDR_CPU_VAR_REV(v_max, r_max)
>
> -#define MIDR_ALL_VERSIONS(model) \
> +/* Errata affecting a range of revisions of given model variant */
> +#define ERRATA_MIDR_REV_RANGE(m, var, r_min, r_max) \
> + ERRATA_MIDR_RANGE(m, var, r_min, var, r_max)
> +
> +/* Errata affecting a single variant/revision of a model */
> +#define ERRATA_MIDR(model, var, rev) \
Maybe call this ERRATA_MIDR_REV() since it's similar to
ERRATA_MIDR_REV_RANGE() but describes a single revision?
[...]
Cheers
---Dave
More information about the linux-arm-kernel
mailing list