kselftest/arm64: add crc32 feature to hwcap test

Add the CRC32 feature check in the set of hwcap tests.

Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230808134036.668954-3-zengheng4@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index ec247587f2bf7593097d1368c72c603f42261994..70850bdb0e3540db9e7cd746f97aa8624b50cf50 100644 (file)
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -33,6 +33,11 @@
  */
 typedef void (*sigill_fn)(void);
 
+static void crc32_sigill(void)
+{
+       asm volatile("crc32w w0, w0, w1");
+}
+
 static void cssc_sigill(void)
 {
        /* CNT x0, x0 */
@@ -233,6 +238,13 @@ static const struct hwcap_data {
        sigill_fn sigill_fn;
        bool sigill_reliable;
 } hwcaps[] = {
+       {
+               .name = "CRC32",
+               .at_hwcap = AT_HWCAP,
+               .hwcap_bit = HWCAP_CRC32,
+               .cpuinfo = "crc32",
+               .sigill_fn = crc32_sigill,
+       },
        {
                .name = "CSSC",
                .at_hwcap = AT_HWCAP2,