DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
EXPORT_SYMBOL(cpu_hwcaps);
+static struct arm64_cpu_capabilities const __ro_after_init *cpu_hwcaps_ptrs[ARM64_NCAPS];
/*
* Flag to indicate if we have computed the system wide
}
extern const struct arm64_cpu_capabilities arm64_errata[];
+static const struct arm64_cpu_capabilities arm64_features[];
+
+static void __init
+init_cpu_hwcaps_indirect_list_from_array(const struct arm64_cpu_capabilities *caps)
+{
+ for (; caps->matches; caps++) {
+ if (WARN(caps->capability >= ARM64_NCAPS,
+ "Invalid capability %d\n", caps->capability))
+ continue;
+ if (WARN(cpu_hwcaps_ptrs[caps->capability],
+ "Duplicate entry for capability %d\n",
+ caps->capability))
+ continue;
+ cpu_hwcaps_ptrs[caps->capability] = caps;
+ }
+}
+
+static void __init init_cpu_hwcaps_indirect_list(void)
+{
+ init_cpu_hwcaps_indirect_list_from_array(arm64_features);
+ init_cpu_hwcaps_indirect_list_from_array(arm64_errata);
+}
+
static void __init setup_boot_cpu_capabilities(void);
void __init init_cpu_features(struct cpuinfo_arm64 *info)
}
/*
+ * Initialize the indirect array of CPU hwcaps capabilities pointers
+ * before we handle the boot CPU below.
+ */
+ init_cpu_hwcaps_indirect_list();
+
+ /*
* Detect and enable early CPU capabilities based on the boot CPU,
* after we have initialised the CPU feature infrastructure.
*/
static_branch_enable(&arm64_const_caps_ready);
}
-extern const struct arm64_cpu_capabilities arm64_errata[];
-
bool this_cpu_has_cap(unsigned int cap)
{
return (__this_cpu_has_cap(arm64_features, cap) ||