Lines Matching +full:reserved +full:- +full:ipi +full:- +full:vectors
1 // SPDX-License-Identifier: GPL-2.0-only
9 * there's a little bit of over-abstraction that tends to obscure what's going
14 * user-visible instructions are available only on a subset of the available
18 * snapshot state to indicate the lowest-common denominator of the feature,
31 * - Mismatched features are *always* sanitised to a "safe" value, which
34 * - A mismatched feature marked with FTR_STRICT will cause a "SANITY CHECK"
38 * - Features marked as FTR_VISIBLE have their sanitised value visible to
43 * - A "feature" is typically a 4-bit register field. A "capability" is the
44 * high-level description derived from the sanitised field value.
46 * - Read the Arm ARM (DDI 0487F.a) section D13.1.3 ("Principles of the ID
50 * - KVM exposes its own view of the feature registers to guest operating
57 * - If the arm64_ftr_bits[] for a register has a missing field, then this
92 #include <asm/vectors.h>
117 DEFINE_PER_CPU_READ_MOSTLY(const char *, this_cpu_vector) = vectors;
120 * Permit PER_LINUX32 and execve() of 32-bit binaries even if not all CPUs
127 * seen at least one CPU capable of 32-bit EL0.
132 * Mask of CPUs supporting 32-bit EL0.
139 /* file-wide pr_fmt adds "CPU features: " prefix */ in dump_cpu_features()
325 * Page size not being supported at Stage-2 is not fatal. You
330 * advertises a given granule size at Stage-2 (value 2) on some
331 * vCPUs, and uses the fallback to Stage-1 (value 0) for other
347 * along with it and treat them as non-strict.
416 * Linux can handle differing I-cache policies. Userspace JITs will
418 * If we have differing I-cache policies, report it as the weakest - VIPT.
630 * id_isar[1-3], id_mmfr[1-3]
755 return (int)(unsigned long)id - (int)((const struct __ftr_reg_entry *)regp)->sys_id; in search_cmp_ftr_reg()
759 * get_arm64_ftr_reg_nowarn - Looks up a feature register entry using
764 * returns - Upon success, matching ftr_reg entry for id.
765 * - NULL on failure. It is upto the caller to decide
778 return ret->reg; in get_arm64_ftr_reg_nowarn()
783 * get_arm64_ftr_reg - Looks up a feature register entry using
786 * returns - Upon success, matching ftr_reg entry for id.
787 * - NULL on failure but with an WARN_ON().
796 * Requesting a non-existent register search is an error. Warn in get_arm64_ftr_reg()
809 reg |= (ftr_val << ftrp->shift) & mask; in arm64_ftr_set_value()
818 switch (ftrp->type) { in arm64_ftr_safe_value()
820 ret = ftrp->safe_val; in arm64_ftr_safe_value()
845 const struct arm64_ftr_bits *ftr_bits = ftr_reg->ftr_bits; in sort_ftr_regs()
852 for (; ftr_bits->width != 0; ftr_bits++, j++) { in sort_ftr_regs()
853 unsigned int width = ftr_reg->ftr_bits[j].width; in sort_ftr_regs()
854 unsigned int shift = ftr_reg->ftr_bits[j].shift; in sort_ftr_regs()
859 ftr_reg->name, shift); in sort_ftr_regs()
868 prev_shift = ftr_reg->ftr_bits[j - 1].shift; in sort_ftr_regs()
871 ftr_reg->name, shift); in sort_ftr_regs()
885 BUG_ON(arm64_ftr_regs[i].sys_id <= arm64_ftr_regs[i - 1].sys_id); in sort_ftr_regs()
893 * RES0 for the system-wide value, and must strictly match.
908 for (ftrp = reg->ftr_bits; ftrp->width; ftrp++) { in init_cpu_ftr_reg()
911 s64 ftr_ovr = arm64_ftr_value(ftrp, reg->override->val); in init_cpu_ftr_reg()
913 if ((ftr_mask & reg->override->mask) == ftr_mask) { in init_cpu_ftr_reg()
919 reg->override->mask &= ~ftr_mask; in init_cpu_ftr_reg()
920 reg->override->val &= ~ftr_mask; in init_cpu_ftr_reg()
934 reg->name, in init_cpu_ftr_reg()
935 ftrp->shift + ftrp->width - 1, in init_cpu_ftr_reg()
936 ftrp->shift, str, tmp); in init_cpu_ftr_reg()
937 } else if ((ftr_mask & reg->override->val) == ftr_mask) { in init_cpu_ftr_reg()
938 reg->override->val &= ~ftr_mask; in init_cpu_ftr_reg()
940 reg->name, in init_cpu_ftr_reg()
941 ftrp->shift + ftrp->width - 1, in init_cpu_ftr_reg()
942 ftrp->shift); in init_cpu_ftr_reg()
948 if (!ftrp->strict) in init_cpu_ftr_reg()
950 if (ftrp->visible) in init_cpu_ftr_reg()
953 reg->user_val = arm64_ftr_set_value(ftrp, in init_cpu_ftr_reg()
954 reg->user_val, in init_cpu_ftr_reg()
955 ftrp->safe_val); in init_cpu_ftr_reg()
960 reg->sys_val = val; in init_cpu_ftr_reg()
961 reg->strict_mask = strict_mask; in init_cpu_ftr_reg()
962 reg->user_mask = user_mask; in init_cpu_ftr_reg()
971 for (; caps->matches; caps++) { in init_cpucap_indirect_list_from_array()
972 if (WARN(caps->capability >= ARM64_NCAPS, in init_cpucap_indirect_list_from_array()
973 "Invalid capability %d\n", caps->capability)) in init_cpucap_indirect_list_from_array()
975 if (WARN(cpucap_ptrs[caps->capability], in init_cpucap_indirect_list_from_array()
977 caps->capability)) in init_cpucap_indirect_list_from_array()
979 cpucap_ptrs[caps->capability] = caps; in init_cpucap_indirect_list_from_array()
993 init_cpu_ftr_reg(SYS_ID_DFR0_EL1, info->reg_id_dfr0); in init_32bit_cpu_features()
994 init_cpu_ftr_reg(SYS_ID_DFR1_EL1, info->reg_id_dfr1); in init_32bit_cpu_features()
995 init_cpu_ftr_reg(SYS_ID_ISAR0_EL1, info->reg_id_isar0); in init_32bit_cpu_features()
996 init_cpu_ftr_reg(SYS_ID_ISAR1_EL1, info->reg_id_isar1); in init_32bit_cpu_features()
997 init_cpu_ftr_reg(SYS_ID_ISAR2_EL1, info->reg_id_isar2); in init_32bit_cpu_features()
998 init_cpu_ftr_reg(SYS_ID_ISAR3_EL1, info->reg_id_isar3); in init_32bit_cpu_features()
999 init_cpu_ftr_reg(SYS_ID_ISAR4_EL1, info->reg_id_isar4); in init_32bit_cpu_features()
1000 init_cpu_ftr_reg(SYS_ID_ISAR5_EL1, info->reg_id_isar5); in init_32bit_cpu_features()
1001 init_cpu_ftr_reg(SYS_ID_ISAR6_EL1, info->reg_id_isar6); in init_32bit_cpu_features()
1002 init_cpu_ftr_reg(SYS_ID_MMFR0_EL1, info->reg_id_mmfr0); in init_32bit_cpu_features()
1003 init_cpu_ftr_reg(SYS_ID_MMFR1_EL1, info->reg_id_mmfr1); in init_32bit_cpu_features()
1004 init_cpu_ftr_reg(SYS_ID_MMFR2_EL1, info->reg_id_mmfr2); in init_32bit_cpu_features()
1005 init_cpu_ftr_reg(SYS_ID_MMFR3_EL1, info->reg_id_mmfr3); in init_32bit_cpu_features()
1006 init_cpu_ftr_reg(SYS_ID_MMFR4_EL1, info->reg_id_mmfr4); in init_32bit_cpu_features()
1007 init_cpu_ftr_reg(SYS_ID_MMFR5_EL1, info->reg_id_mmfr5); in init_32bit_cpu_features()
1008 init_cpu_ftr_reg(SYS_ID_PFR0_EL1, info->reg_id_pfr0); in init_32bit_cpu_features()
1009 init_cpu_ftr_reg(SYS_ID_PFR1_EL1, info->reg_id_pfr1); in init_32bit_cpu_features()
1010 init_cpu_ftr_reg(SYS_ID_PFR2_EL1, info->reg_id_pfr2); in init_32bit_cpu_features()
1011 init_cpu_ftr_reg(SYS_MVFR0_EL1, info->reg_mvfr0); in init_32bit_cpu_features()
1012 init_cpu_ftr_reg(SYS_MVFR1_EL1, info->reg_mvfr1); in init_32bit_cpu_features()
1013 init_cpu_ftr_reg(SYS_MVFR2_EL1, info->reg_mvfr2); in init_32bit_cpu_features()
1021 init_cpu_ftr_reg(SYS_CTR_EL0, info->reg_ctr); in init_cpu_features()
1022 init_cpu_ftr_reg(SYS_DCZID_EL0, info->reg_dczid); in init_cpu_features()
1023 init_cpu_ftr_reg(SYS_CNTFRQ_EL0, info->reg_cntfrq); in init_cpu_features()
1024 init_cpu_ftr_reg(SYS_ID_AA64DFR0_EL1, info->reg_id_aa64dfr0); in init_cpu_features()
1025 init_cpu_ftr_reg(SYS_ID_AA64DFR1_EL1, info->reg_id_aa64dfr1); in init_cpu_features()
1026 init_cpu_ftr_reg(SYS_ID_AA64ISAR0_EL1, info->reg_id_aa64isar0); in init_cpu_features()
1027 init_cpu_ftr_reg(SYS_ID_AA64ISAR1_EL1, info->reg_id_aa64isar1); in init_cpu_features()
1028 init_cpu_ftr_reg(SYS_ID_AA64ISAR2_EL1, info->reg_id_aa64isar2); in init_cpu_features()
1029 init_cpu_ftr_reg(SYS_ID_AA64MMFR0_EL1, info->reg_id_aa64mmfr0); in init_cpu_features()
1030 init_cpu_ftr_reg(SYS_ID_AA64MMFR1_EL1, info->reg_id_aa64mmfr1); in init_cpu_features()
1031 init_cpu_ftr_reg(SYS_ID_AA64MMFR2_EL1, info->reg_id_aa64mmfr2); in init_cpu_features()
1032 init_cpu_ftr_reg(SYS_ID_AA64MMFR3_EL1, info->reg_id_aa64mmfr3); in init_cpu_features()
1033 init_cpu_ftr_reg(SYS_ID_AA64PFR0_EL1, info->reg_id_aa64pfr0); in init_cpu_features()
1034 init_cpu_ftr_reg(SYS_ID_AA64PFR1_EL1, info->reg_id_aa64pfr1); in init_cpu_features()
1035 init_cpu_ftr_reg(SYS_ID_AA64ZFR0_EL1, info->reg_id_aa64zfr0); in init_cpu_features()
1036 init_cpu_ftr_reg(SYS_ID_AA64SMFR0_EL1, info->reg_id_aa64smfr0); in init_cpu_features()
1038 if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) in init_cpu_features()
1039 init_32bit_cpu_features(&info->aarch32); in init_cpu_features()
1043 info->reg_zcr = read_zcr_features(); in init_cpu_features()
1044 init_cpu_ftr_reg(SYS_ZCR_EL1, info->reg_zcr); in init_cpu_features()
1050 info->reg_smcr = read_smcr_features(); in init_cpu_features()
1056 info->reg_smidr = read_cpuid(SMIDR_EL1) & ~SMIDR_EL1_SMPS; in init_cpu_features()
1057 init_cpu_ftr_reg(SYS_SMCR_EL1, info->reg_smcr); in init_cpu_features()
1061 if (id_aa64pfr1_mte(info->reg_id_aa64pfr1)) in init_cpu_features()
1062 init_cpu_ftr_reg(SYS_GMID_EL1, info->reg_gmid); in init_cpu_features()
1081 for (ftrp = reg->ftr_bits; ftrp->width; ftrp++) { in update_cpu_ftr_reg()
1082 s64 ftr_cur = arm64_ftr_value(ftrp, reg->sys_val); in update_cpu_ftr_reg()
1089 reg->sys_val = arm64_ftr_set_value(ftrp, reg->sys_val, ftr_new); in update_cpu_ftr_reg()
1102 if ((boot & regp->strict_mask) == (val & regp->strict_mask)) in check_update_ftr_reg()
1105 regp->name, boot, cpu, val); in check_update_ftr_reg()
1117 for (ftrp = regp->ftr_bits; ftrp->width; ftrp++) { in relax_cpu_ftr_reg()
1118 if (ftrp->shift == field) { in relax_cpu_ftr_reg()
1119 regp->strict_mask &= ~arm64_ftr_mask(ftrp); in relax_cpu_ftr_reg()
1125 WARN_ON(!ftrp->width); in relax_cpu_ftr_reg()
1136 if (id_aa64pfr0_32bit_el0(boot->reg_id_aa64pfr0)) in lazy_init_32bit_cpu_features()
1139 boot->aarch32 = info->aarch32; in lazy_init_32bit_cpu_features()
1140 init_32bit_cpu_features(&boot->aarch32); in lazy_init_32bit_cpu_features()
1152 * EL1-dependent register fields to avoid spurious sanity check fails. in update_32bit_cpu_features()
1164 info->reg_id_dfr0, boot->reg_id_dfr0); in update_32bit_cpu_features()
1166 info->reg_id_dfr1, boot->reg_id_dfr1); in update_32bit_cpu_features()
1168 info->reg_id_isar0, boot->reg_id_isar0); in update_32bit_cpu_features()
1170 info->reg_id_isar1, boot->reg_id_isar1); in update_32bit_cpu_features()
1172 info->reg_id_isar2, boot->reg_id_isar2); in update_32bit_cpu_features()
1174 info->reg_id_isar3, boot->reg_id_isar3); in update_32bit_cpu_features()
1176 info->reg_id_isar4, boot->reg_id_isar4); in update_32bit_cpu_features()
1178 info->reg_id_isar5, boot->reg_id_isar5); in update_32bit_cpu_features()
1180 info->reg_id_isar6, boot->reg_id_isar6); in update_32bit_cpu_features()
1188 info->reg_id_mmfr0, boot->reg_id_mmfr0); in update_32bit_cpu_features()
1190 info->reg_id_mmfr1, boot->reg_id_mmfr1); in update_32bit_cpu_features()
1192 info->reg_id_mmfr2, boot->reg_id_mmfr2); in update_32bit_cpu_features()
1194 info->reg_id_mmfr3, boot->reg_id_mmfr3); in update_32bit_cpu_features()
1196 info->reg_id_mmfr4, boot->reg_id_mmfr4); in update_32bit_cpu_features()
1198 info->reg_id_mmfr5, boot->reg_id_mmfr5); in update_32bit_cpu_features()
1200 info->reg_id_pfr0, boot->reg_id_pfr0); in update_32bit_cpu_features()
1202 info->reg_id_pfr1, boot->reg_id_pfr1); in update_32bit_cpu_features()
1204 info->reg_id_pfr2, boot->reg_id_pfr2); in update_32bit_cpu_features()
1206 info->reg_mvfr0, boot->reg_mvfr0); in update_32bit_cpu_features()
1208 info->reg_mvfr1, boot->reg_mvfr1); in update_32bit_cpu_features()
1210 info->reg_mvfr2, boot->reg_mvfr2); in update_32bit_cpu_features()
1217 * non-boot CPU. Also performs SANITY checks to make sure that there
1227 * The kernel can handle differing I-cache policies, but otherwise in update_cpu_features()
1232 info->reg_ctr, boot->reg_ctr); in update_cpu_features()
1240 info->reg_dczid, boot->reg_dczid); in update_cpu_features()
1244 info->reg_cntfrq, boot->reg_cntfrq); in update_cpu_features()
1247 * The kernel uses self-hosted debug features and expects CPUs to in update_cpu_features()
1253 info->reg_id_aa64dfr0, boot->reg_id_aa64dfr0); in update_cpu_features()
1255 info->reg_id_aa64dfr1, boot->reg_id_aa64dfr1); in update_cpu_features()
1257 * Even in big.LITTLE, processors should be identical instruction-set in update_cpu_features()
1261 info->reg_id_aa64isar0, boot->reg_id_aa64isar0); in update_cpu_features()
1263 info->reg_id_aa64isar1, boot->reg_id_aa64isar1); in update_cpu_features()
1265 info->reg_id_aa64isar2, boot->reg_id_aa64isar2); in update_cpu_features()
1273 info->reg_id_aa64mmfr0, boot->reg_id_aa64mmfr0); in update_cpu_features()
1275 info->reg_id_aa64mmfr1, boot->reg_id_aa64mmfr1); in update_cpu_features()
1277 info->reg_id_aa64mmfr2, boot->reg_id_aa64mmfr2); in update_cpu_features()
1279 info->reg_id_aa64mmfr3, boot->reg_id_aa64mmfr3); in update_cpu_features()
1282 info->reg_id_aa64pfr0, boot->reg_id_aa64pfr0); in update_cpu_features()
1284 info->reg_id_aa64pfr1, boot->reg_id_aa64pfr1); in update_cpu_features()
1287 info->reg_id_aa64zfr0, boot->reg_id_aa64zfr0); in update_cpu_features()
1290 info->reg_id_aa64smfr0, boot->reg_id_aa64smfr0); in update_cpu_features()
1294 info->reg_zcr = read_zcr_features(); in update_cpu_features()
1296 info->reg_zcr, boot->reg_zcr); in update_cpu_features()
1305 info->reg_smcr = read_smcr_features(); in update_cpu_features()
1311 info->reg_smidr = read_cpuid(SMIDR_EL1) & ~SMIDR_EL1_SMPS; in update_cpu_features()
1313 info->reg_smcr, boot->reg_smcr); in update_cpu_features()
1326 id_aa64pfr1_mte(info->reg_id_aa64pfr1)) { in update_cpu_features()
1328 info->reg_gmid, boot->reg_gmid); in update_cpu_features()
1339 if (id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) { in update_cpu_features()
1341 taint |= update_32bit_cpu_features(cpu, &info->aarch32, in update_cpu_features()
1342 &boot->aarch32); in update_cpu_features()
1361 return regp->sys_val; in read_sanitised_ftr_reg()
1369 * __read_sysreg_by_encoding() - Used by a STARTING cpu before cpuinfo is populated.
1425 val &= ~regp->override->mask; in __read_sysreg_by_encoding()
1426 val |= (regp->override->val & regp->override->mask); in __read_sysreg_by_encoding()
1432 #include <linux/irqchip/arm-gic-v3.h>
1443 int val = cpuid_feature_extract_field_width(reg, entry->field_pos, in feature_matches()
1444 entry->field_width, in feature_matches()
1445 entry->sign); in feature_matches()
1447 return val >= entry->min_field_value; in feature_matches()
1455 return read_sanitised_ftr_reg(entry->sys_reg); in read_scoped_sysreg()
1457 return __read_sysreg_by_encoding(entry->sys_reg); in read_scoped_sysreg()
1467 regp = get_arm64_ftr_reg(entry->sys_reg); in has_user_cpuid_feature()
1471 mask = cpuid_feature_extract_unsigned_field_width(regp->user_mask, in has_user_cpuid_feature()
1472 entry->field_pos, in has_user_cpuid_feature()
1473 entry->field_width); in has_user_cpuid_feature()
1537 pr_info("detected: 32-bit EL0 Support\n"); in has_32bit_el0()
1552 entry->desc); in has_useable_gicv3_cpuif()
1617 * Kdump isn't guaranteed to power-off all secondary CPUs, CNP in has_useable_cnp()
1633 * CPU to detect the need for non-global mappings and thus avoiding a
1634 * pagetable re-write after all the CPUs are booted. This check will be
1636 * state once the SMP CPUs are up and thus make the switch to non-global
1709 * ThunderX leads to apparent I-cache corruption of kernel text, which in unmap_kernel_at_el0()
1718 __kpti_forced = -1; in unmap_kernel_at_el0()
1731 __kpti_forced = -1; in unmap_kernel_at_el0()
1750 #define KPTI_NG_TEMP_VA (-(1UL << PMD_SHIFT))
1761 kpti_ng_temp_alloc -= PAGE_SIZE; in kpti_ng_pgd_alloc()
1779 if (__this_cpu_read(this_cpu_vector) == vectors) { in kpti_install_ng_mappings()
1786 * We don't need to rewrite the page-tables if either we've done in kpti_install_ng_mappings()
1797 kpti_ng_temp_pgd = (pgd_t *)(alloc + (levels - 1) * PAGE_SIZE); in kpti_install_ng_mappings()
1806 // +--------+-/-------+-/------ +-\\--------+ in kpti_install_ng_mappings()
1808 // +--------+-\-------+-\------ +-//--------+ in kpti_install_ng_mappings()
1814 // to be used as a ad-hoc fixmap. in kpti_install_ng_mappings()
1845 __kpti_forced = enabled ? 1 : -1; in parse_kpti()
1895 * DBM is a non-conflicting feature. i.e, the kernel can safely in has_hw_dbm()
1905 * This is safe as all CPUs (including secondary CPUs - due to the in has_hw_dbm()
1906 * LOCAL_CPU scope - and the hotplugged CPUs - via verification) in has_hw_dbm()
1961 * The AMU extension is a non-conflicting feature: the kernel can in has_amu()
1994 * that, freshly-onlined CPUs will set tpidr_el2, so we don't need to in cpu_copy_el2regs()
2008 pr_warn("unavailable: %s\n", cap->desc); in has_nested_virt_support()
2058 * The ptr-auth feature levels are not intercompatible with lower in has_address_auth_cpucap()
2059 * levels. Hence we must match ptr-auth feature level of the secondary in has_address_auth_cpucap()
2067 boot_val = cpuid_feature_extract_field(read_sanitised_ftr_reg(entry->sys_reg), in has_address_auth_cpucap()
2068 entry->field_pos, entry->sign); in has_address_auth_cpucap()
2070 return boot_val >= entry->min_field_value; in has_address_auth_cpucap()
2072 sec_val = cpuid_feature_extract_field(__read_sysreg_by_encoding(entry->sys_reg), in has_address_auth_cpucap()
2073 entry->field_pos, entry->sign); in has_address_auth_cpucap()
2074 return (sec_val >= entry->min_field_value) && (sec_val == boot_val); in has_address_auth_cpucap()
2162 * Use of X16/X17 for tail-calls and trampolines that jump to in bti_enable()
2200 regp->user_mask &= ~ID_AA64PFR1_EL1_SSBS_MASK; in user_feature_fixup()
2238 return !!(cap->type & ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU); in cpucap_late_cpu_optional()
2244 return !!(cap->type & ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU); in cpucap_late_cpu_permitted()
2250 return !!(cap->type & ARM64_CPUCAP_PANIC_ON_CONFLICT); in cpucap_panic_on_conflict()
2341 .desc = "32-bit EL1 Support",
2446 .desc = "Stage-2 Force Write-Back",
2636 .desc = "RCpc load-acquire (LDAPR)",
2714 .desc = "Stage-1 Permission Indirection Extension (S1PIE)",
2902 * check is future proof, by making sure value is non-zero. in compat_has_neon()
2944 switch (cap->hwcap_type) { in cap_set_elf_hwcap()
2946 cpu_set_feature(cap->hwcap); in cap_set_elf_hwcap()
2950 compat_elf_hwcap |= (u32)cap->hwcap; in cap_set_elf_hwcap()
2953 compat_elf_hwcap2 |= (u32)cap->hwcap; in cap_set_elf_hwcap()
2967 switch (cap->hwcap_type) { in cpus_have_elf_hwcap()
2969 rc = cpu_have_feature(cap->hwcap); in cpus_have_elf_hwcap()
2973 rc = (compat_elf_hwcap & (u32)cap->hwcap) != 0; in cpus_have_elf_hwcap()
2976 rc = (compat_elf_hwcap2 & (u32)cap->hwcap) != 0; in cpus_have_elf_hwcap()
2991 for (; hwcaps->matches; hwcaps++) in setup_elf_hwcaps()
2992 if (hwcaps->matches(hwcaps, cpucap_default_scope(hwcaps))) in setup_elf_hwcaps()
3004 if (!caps || !(caps->type & scope_mask) || in update_cpu_capabilities()
3005 cpus_have_cap(caps->capability) || in update_cpu_capabilities()
3006 !caps->matches(caps, cpucap_default_scope(caps))) in update_cpu_capabilities()
3009 if (caps->desc) in update_cpu_capabilities()
3010 pr_info("detected: %s\n", caps->desc); in update_cpu_capabilities()
3012 __set_bit(caps->capability, system_cpucaps); in update_cpu_capabilities()
3014 if ((scope_mask & SCOPE_BOOT_CPU) && (caps->type & SCOPE_BOOT_CPU)) in update_cpu_capabilities()
3015 set_bit(caps->capability, boot_cpucaps); in update_cpu_capabilities()
3034 if (!(cap->type & non_boot_scope)) in cpu_enable_non_boot_scope_capabilities()
3037 if (cap->cpu_enable) in cpu_enable_non_boot_scope_capabilities()
3038 cap->cpu_enable(cap); in cpu_enable_non_boot_scope_capabilities()
3060 if (!caps || !(caps->type & scope_mask)) in enable_cpu_capabilities()
3062 num = caps->capability; in enable_cpu_capabilities()
3066 if (boot_scope && caps->cpu_enable) in enable_cpu_capabilities()
3076 caps->cpu_enable(caps); in enable_cpu_capabilities()
3080 * For all non-boot scope capabilities, use stop_machine() in enable_cpu_capabilities()
3082 * instead of on_each_cpu() which uses an IPI, giving us a in enable_cpu_capabilities()
3105 if (!caps || !(caps->type & scope_mask)) in verify_local_cpu_caps()
3108 cpu_has_cap = caps->matches(caps, SCOPE_LOCAL_CPU); in verify_local_cpu_caps()
3109 system_has_cap = cpus_have_cap(caps->capability); in verify_local_cpu_caps()
3124 if (caps->cpu_enable) in verify_local_cpu_caps()
3125 caps->cpu_enable(caps); in verify_local_cpu_caps()
3138 smp_processor_id(), caps->capability, in verify_local_cpu_caps()
3139 caps->desc, system_has_cap, cpu_has_cap); in verify_local_cpu_caps()
3163 for (; caps->matches; caps++) in __verify_local_elf_hwcaps()
3164 if (cpus_have_elf_hwcap(caps) && !caps->matches(caps, SCOPE_LOCAL_CPU)) { in __verify_local_elf_hwcaps()
3166 smp_processor_id(), caps->desc); in __verify_local_elf_hwcaps()
3306 return cap->matches(cap, SCOPE_LOCAL_CPU); in this_cpu_has_cap()
3315 * - The system wide safe registers are set with all the SMP CPUs and,
3316 * - The SYSTEM_FEATURE system_cpucaps may not have been set.
3325 return cap->matches(cap, SCOPE_SYSTEM); in __system_matches_cap()
3359 * We have finalised the system-wide safe feature in setup_system_capabilities()
3400 * The first 32-bit-capable CPU we detected and so can no longer in enable_mismatched_32bit_el0()
3401 * be offlined by userspace. -1 indicates we haven't yet onlined in enable_mismatched_32bit_el0()
3402 * a 32-bit-capable CPU. in enable_mismatched_32bit_el0()
3404 static int lucky_winner = -1; in enable_mismatched_32bit_el0()
3407 bool cpu_32bit = id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0); in enable_mismatched_32bit_el0()
3422 * 32-bit EL0 online so that is_cpu_allowed() doesn't end up rejecting in enable_mismatched_32bit_el0()
3423 * every CPU in the system for a 32-bit task. in enable_mismatched_32bit_el0()
3427 get_cpu_device(lucky_winner)->offline_disabled = true; in enable_mismatched_32bit_el0()
3430 pr_info("Asymmetric 32-bit EL0 support detected on CPU %u; CPU hot-unplug disabled on CPU %u\n", in enable_mismatched_32bit_el0()
3441 return -ENOMEM; in init_32bit_el0_mask()
3456 * Op0 = 0x3, CRn = 0x0, Op1 = 0x0, CRm = [0, 2 - 7]
3457 * See Table C5-6 System instruction encodings for System register accesses,
3487 return -EINVAL; in emulate_id_reg()
3498 return -EINVAL; in emulate_sys_reg()
3509 * (e.g, ID_AFR0_EL1) or reserved RAZ. in emulate_sys_reg()