diff options
Diffstat (limited to 'arch/s390/include/asm/cpufeature.h')
| -rw-r--r-- | arch/s390/include/asm/cpufeature.h | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/arch/s390/include/asm/cpufeature.h b/arch/s390/include/asm/cpufeature.h index 1d007c6ede95..d6fb999c8c6d 100644 --- a/arch/s390/include/asm/cpufeature.h +++ b/arch/s390/include/asm/cpufeature.h @@ -2,29 +2,36 @@ /* * Module interface for CPU features * - * Copyright IBM Corp. 2015 + * Copyright IBM Corp. 2015, 2022 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ #ifndef __ASM_S390_CPUFEATURE_H #define __ASM_S390_CPUFEATURE_H -#include <asm/elf.h> +#include <asm/facility.h> -/* Hardware features on Linux on z Systems are indicated by facility bits that - * are mapped to the so-called machine flags. Particular machine flags are - * then used to define ELF hardware capabilities; most notably hardware flags - * that are essential for user space / glibc. - * - * Restrict the set of exposed CPU features to ELF hardware capabilities for - * now. Additional machine flags can be indicated by values larger than - * MAX_ELF_HWCAP_FEATURES. - */ -#define MAX_ELF_HWCAP_FEATURES (8 * sizeof(elf_hwcap)) -#define MAX_CPU_FEATURES MAX_ELF_HWCAP_FEATURES +enum { + S390_CPU_FEATURE_MSA, + S390_CPU_FEATURE_VXRS, + S390_CPU_FEATURE_UV, + S390_CPU_FEATURE_D288, + MAX_CPU_FEATURES +}; -#define cpu_feature(feat) ilog2(HWCAP_S390_ ## feat) +#define cpu_feature(feature) (feature) int cpu_have_feature(unsigned int nr); +#define cpu_has_bear() test_facility(193) +#define cpu_has_edat1() test_facility(8) +#define cpu_has_edat2() test_facility(78) +#define cpu_has_gs() test_facility(133) +#define cpu_has_nx() test_facility(130) +#define cpu_has_rdp() test_facility(194) +#define cpu_has_seq_insn() test_facility(85) +#define cpu_has_tlb_lc() test_facility(51) +#define cpu_has_topology() test_facility(11) +#define cpu_has_vx() test_facility(129) + #endif /* __ASM_S390_CPUFEATURE_H */ |