1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __ASM_CPUCAPS_H 4 #define __ASM_CPUCAPS_H 5 6 #include <asm/cpucap-defs.h> 7 8 #ifndef __ASSEMBLER__ 9 #include <linux/types.h> 10 /* 11 * Check whether a cpucap is possible at compiletime. 12 */ 13 static __always_inline bool 14 cpucap_is_possible(const unsigned int cap) 15 { 16 compiletime_assert(__builtin_constant_p(cap), 17 "cap must be a constant"); 18 compiletime_assert(cap < ARM64_NCAPS, 19 "cap must be < ARM64_NCAPS"); 20 21 switch (cap) { 22 case ARM64_HAS_EPAN: 23 return IS_ENABLED(CONFIG_ARM64_EPAN); 24 case ARM64_SVE: 25 return IS_ENABLED(CONFIG_ARM64_SVE); 26 case ARM64_SME: 27 case ARM64_SME2: 28 case ARM64_SME_FA64: 29 return IS_ENABLED(CONFIG_ARM64_SME); 30 case ARM64_HAS_CNP: 31 return IS_ENABLED(CONFIG_ARM64_CNP); 32 case ARM64_HAS_ADDRESS_AUTH: 33 case ARM64_HAS_GENERIC_AUTH: 34 return IS_ENABLED(CONFIG_ARM64_PTR_AUTH); 35 case ARM64_HAS_GIC_PRIO_MASKING: 36 return IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI); 37 case ARM64_MTE: 38 return IS_ENABLED(CONFIG_ARM64_MTE); 39 case ARM64_BTI: 40 return IS_ENABLED(CONFIG_ARM64_BTI); 41 case ARM64_HAS_TLB_RANGE: 42 return IS_ENABLED(CONFIG_ARM64_TLB_RANGE); 43 case ARM64_HAS_S1POE: 44 return IS_ENABLED(CONFIG_ARM64_POE); 45 case ARM64_HAS_GCS: 46 return IS_ENABLED(CONFIG_ARM64_GCS); 47 case ARM64_HAFT: 48 return IS_ENABLED(CONFIG_ARM64_HAFT); 49 case ARM64_UNMAP_KERNEL_AT_EL0: 50 return IS_ENABLED(CONFIG_UNMAP_KERNEL_AT_EL0); 51 case ARM64_WORKAROUND_843419: 52 return IS_ENABLED(CONFIG_ARM64_ERRATUM_843419); 53 case ARM64_WORKAROUND_1742098: 54 return IS_ENABLED(CONFIG_ARM64_ERRATUM_1742098); 55 case ARM64_WORKAROUND_2645198: 56 return IS_ENABLED(CONFIG_ARM64_ERRATUM_2645198); 57 case ARM64_WORKAROUND_2658417: 58 return IS_ENABLED(CONFIG_ARM64_ERRATUM_2658417); 59 case ARM64_WORKAROUND_CAVIUM_23154: 60 return IS_ENABLED(CONFIG_CAVIUM_ERRATUM_23154); 61 case ARM64_WORKAROUND_NVIDIA_CARMEL_CNP: 62 return IS_ENABLED(CONFIG_NVIDIA_CARMEL_CNP_ERRATUM); 63 case ARM64_WORKAROUND_REPEAT_TLBI: 64 return IS_ENABLED(CONFIG_ARM64_WORKAROUND_REPEAT_TLBI); 65 case ARM64_WORKAROUND_SPECULATIVE_SSBS: 66 return IS_ENABLED(CONFIG_ARM64_ERRATUM_3194386); 67 case ARM64_MPAM: 68 /* 69 * KVM MPAM support doesn't rely on the host kernel supporting MPAM. 70 */ 71 return true; 72 case ARM64_HAS_PMUV3: 73 return IS_ENABLED(CONFIG_HW_PERF_EVENTS); 74 } 75 76 return true; 77 } 78 #endif /* __ASSEMBLER__ */ 79 80 #endif /* __ASM_CPUCAPS_H */ 81