Commit b0ab73a5 authored by Mark Brown's avatar Mark Brown Committed by Will Deacon
Browse files

kselftest/arm64: Add FEAT_CSSC to the hwcap selftest 



Add FEAT_CSSC to the set of features checked by the hwcap selftest.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20221017152520.1039165-3-broonie@kernel.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 95aa6860

tools/testing/selftests/arm64/abi/hwcap.c

+13 −0
Original line number Diff line number Diff line
@@ -33,6 +33,12 @@ 
 */

typedef void (*sigill_fn)(void);



static void cssc_sigill(void)

{

	/* CNT x0, x0 */

	asm volatile(".inst 0xdac01c00" : : : "x0");

}



static void rng_sigill(void)

{

	asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0");
@@ -118,6 +124,13 @@ static const struct hwcap_data { 
	sigill_fn sigill_fn;

	bool sigill_reliable;

} hwcaps[] = {

	{

		.name = "CSSC",

		.at_hwcap = AT_HWCAP2,

		.hwcap_bit = HWCAP2_CSSC,

		.cpuinfo = "cssc",

		.sigill_fn = cssc_sigill,

	},

	{

		.name = "RNG",

		.at_hwcap = AT_HWCAP2,