diff options
Diffstat (limited to 'arch/arm64/kernel/setup.c')
| -rw-r--r-- | arch/arm64/kernel/setup.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index e7a1e719f127..b2f9895ecf7b 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -278,6 +278,19 @@ static void __init setup_processor(void) if (block && !(block & 0x8)) elf_hwcap |= HWCAP_CRC32; + block = (features >> 20) & 0xf; + if (!(block & 0x8)) { + switch (block) { + default: + case 2: + elf_hwcap |= HWCAP_ATOMICS; + case 1: + /* RESERVED */ + case 0: + break; + } + } + #ifdef CONFIG_COMPAT /* * ID_ISAR5_EL1 carries similar information as above, but pertaining to @@ -457,6 +470,7 @@ static const char *hwcap_str[] = { "sha1", "sha2", "crc32", + "atomics", NULL }; |