diff options
Diffstat (limited to 'arch/arm/kernel/setup.c')
| -rw-r--r-- | arch/arm/kernel/setup.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 5807fa021785..979612add87a 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -450,6 +450,7 @@ static void __init cpuid_init_hwcaps(void) { int block; u32 isar5; + u32 isar6; if (cpu_architecture() < CPU_ARCH_ARMv7) return; @@ -485,6 +486,12 @@ static void __init cpuid_init_hwcaps(void) block = cpuid_feature_extract_field(isar5, 16); if (block >= 1) elf_hwcap2 |= HWCAP2_CRC32; + + /* Check for Speculation barrier instruction */ + isar6 = read_cpuid_ext(CPUID_EXT_ISAR6); + block = cpuid_feature_extract_field(isar6, 12); + if (block >= 1) + elf_hwcap2 |= HWCAP2_SB; } static void __init elf_hwcap_fixup(void) @@ -1264,6 +1271,7 @@ static const char *hwcap2_str[] = { "sha1", "sha2", "crc32", + "sb", NULL }; |