diff options
| author | Will Deacon <will.deacon@arm.com> | 2018-12-12 18:53:54 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-13 19:42:47 +0300 |
| commit | 1e013d06120cbf67e771848fc5d98174c33b078a (patch) | |
| tree | 18c322bc54bad6edd5fb45730488288d9fb2fc76 /arch/arm64/kernel/cpu_errata.c | |
| parent | a56005d3210500f8a166fcb83cbb5ac5d0f909e4 (diff) | |
| download | linux-1e013d06120cbf67e771848fc5d98174c33b078a.tar.xz | |
arm64: cpufeature: Rework ptr auth hwcaps using multi_entry_cap_matches
Open-coding the pointer-auth HWCAPs is a mess and can be avoided by
reusing the multi-cap logic from the CPU errata framework.
Move the multi_entry_cap_matches code to cpufeature.h and reuse it for
the pointer auth HWCAPs.
Reviewed-by: Suzuki Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/cpu_errata.c')
| -rw-r--r-- | arch/arm64/kernel/cpu_errata.c | 34 |
1 files changed, 1 insertions, 33 deletions
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index e3123055e552..ff2fda3a98e1 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -507,38 +507,6 @@ cpu_enable_cache_maint_trap(const struct arm64_cpu_capabilities *__unused) .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ CAP_MIDR_RANGE_LIST(midr_list) -/* - * Generic helper for handling capabilties with multiple (match,enable) pairs - * of call backs, sharing the same capability bit. - * Iterate over each entry to see if at least one matches. - */ -static bool __maybe_unused -multi_entry_cap_matches(const struct arm64_cpu_capabilities *entry, int scope) -{ - const struct arm64_cpu_capabilities *caps; - - for (caps = entry->match_list; caps->matches; caps++) - if (caps->matches(caps, scope)) - return true; - - return false; -} - -/* - * Take appropriate action for all matching entries in the shared capability - * entry. - */ -static void __maybe_unused -multi_entry_cap_cpu_enable(const struct arm64_cpu_capabilities *entry) -{ - const struct arm64_cpu_capabilities *caps; - - for (caps = entry->match_list; caps->matches; caps++) - if (caps->matches(caps, SCOPE_LOCAL_CPU) && - caps->cpu_enable) - caps->cpu_enable(caps); -} - #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR /* @@ -700,7 +668,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = { { .desc = "Qualcomm Technologies Falkor/Kryo erratum 1003", .capability = ARM64_WORKAROUND_QCOM_FALKOR_E1003, - .matches = multi_entry_cap_matches, + .matches = cpucap_multi_entry_cap_matches, .match_list = qcom_erratum_1003_list, }, #endif |