Commit 2e3e3565 authored by Yeoreum Yun's avatar Yeoreum Yun Committed by Catalin Marinas
Browse files

kselftest/arm64/mte: Check MTE_FAR feature is supported 



To run the MTE_FAR test when cpu supports MTE_FAR feature,
check the MTE_FAR feature is supported in mte test.

Signed-off-by: default avatarYeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250618084513.1761345-7-yeoreum.yun@arm.com


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent cfafa517

tools/testing/selftests/arm64/mte/mte_common_util.c

+4 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#define INIT_BUFFER_SIZE       256



struct mte_fault_cxt cur_mte_cxt;

bool mtefar_support;

static unsigned int mte_cur_mode;

static unsigned int mte_cur_pstate_tco;
@@ -325,12 +326,15 @@ int mte_switch_mode(int mte_option, unsigned long incl_mask) 
int mte_default_setup(void)

{

	unsigned long hwcaps2 = getauxval(AT_HWCAP2);

	unsigned long hwcaps3 = getauxval(AT_HWCAP3);

	unsigned long en = 0;

	int ret;



	if (!(hwcaps2 & HWCAP2_MTE))

		ksft_exit_skip("MTE features unavailable\n");



	mtefar_support = !!(hwcaps3 & HWCAP3_MTE_FAR);



	/* Get current mte mode */

	ret = prctl(PR_GET_TAGGED_ADDR_CTRL, en, 0, 0, 0);

	if (ret < 0) {

tools/testing/selftests/arm64/mte/mte_common_util.h

+1 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ struct mte_fault_cxt { 
};



extern struct mte_fault_cxt cur_mte_cxt;

extern bool mtefar_support;



/* MTE utility functions */

void mte_default_handler(int signum, siginfo_t *si, void *uc);