From 09d2e95a04ad6fd258082ea3ba9a5bf52bbd5229 Mon Sep 17 00:00:00 2001 From: Zeng Heng Date: Tue, 8 Aug 2023 21:40:33 +0800 Subject: [PATCH] kselftest/arm64: add crc32 feature to hwcap test Add the CRC32 feature check in the set of hwcap tests. Signed-off-by: Zeng Heng Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20230808134036.668954-3-zengheng4@huawei.com Signed-off-by: Will Deacon --- tools/testing/selftests/arm64/abi/hwcap.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index ec247587f2bf..70850bdb0e35 100644 --- 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 */ @@ -234,6 +239,13 @@ static const struct hwcap_data { 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, .hwcap_bit = HWCAP2_CSSC, -- 2.11.0