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arm64: Make  _midr_in_range_list() an exported function

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Subsequent patch will add target implementation CPU support and that
will require _midr_in_range_list() to access new data. To avoid
exporting the data make _midr_in_range_list() a normal function and
export it.

No functional changes intended.

Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20250221140229.12588-5-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Shameer Kolothum 2025-02-21 14:02:27 +00:00 • committed by Oliver Upton
parent c0000e58c7
commit c8c2647e69
3 changed files with 17 additions and 14 deletions
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15
arch/arm64/include/asm/cputype.h
View file

@ -276,20 +276,7 @@ static inline bool midr_is_cpu_model_range(u32 midr, u32 model, u32 rv_min,
return _model == model && rv >= rv_min && rv <= rv_max;
}
static inline bool is_midr_in_range(struct midr_range const *range)
{
return midr_is_cpu_model_range(read_cpuid_id(), range->model,
range->rv_min, range->rv_max);
}
static inline bool
is_midr_in_range_list(struct midr_range const *ranges)
{
while (ranges->model)
if (is_midr_in_range(ranges++))
return true;
return false;
}
bool is_midr_in_range_list(struct midr_range const *ranges);
static inline u64 __attribute_const__ read_cpuid_mpidr(void)
{

15
arch/arm64/kernel/cpu_errata.c
View file

@ -14,6 +14,21 @@
#include <asm/kvm_asm.h>
#include <asm/smp_plat.h>
static inline bool is_midr_in_range(struct midr_range const *range)
{
return midr_is_cpu_model_range(read_cpuid_id(), range->model,
range->rv_min, range->rv_max);
}
bool is_midr_in_range_list(struct midr_range const *ranges)
{
while (ranges->model)
if (is_midr_in_range(ranges++))
return true;
return false;
}
EXPORT_SYMBOL_GPL(is_midr_in_range_list);
static bool __maybe_unused
__is_affected_midr_range(const struct arm64_cpu_capabilities *entry,
u32 midr, u32 revidr)

1
arch/arm64/kernel/image-vars.h
View file

@ -49,6 +49,7 @@ PROVIDE(__pi_arm64_sw_feature_override = arm64_sw_feature_override);
PROVIDE(__pi_arm64_use_ng_mappings = arm64_use_ng_mappings);
#ifdef CONFIG_CAVIUM_ERRATUM_27456
PROVIDE(__pi_cavium_erratum_27456_cpus = cavium_erratum_27456_cpus);
PROVIDE(__pi_is_midr_in_range_list = is_midr_in_range_list);
#endif
PROVIDE(__pi__ctype = _ctype);
PROVIDE(__pi_memstart_offset_seed = memstart_offset_seed);