Commit 48f7ab21 authored by Mark Brown's avatar Mark Brown Committed by Will Deacon
Browse files

kselftest/arm64: Log SVCR when the SME tests barf 



On failure we log the actual and expected value of the register we detect
a mismatch in. For SME one obvious potential source of corruption would be
if we had corrupted SVCR since changes in streaming mode will reset the
register values, log the value to aid in understanding issues.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20231205-arm64-kselftest-log-svcr-v1-1-b77abd9ee7f3@kernel.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 33c1a778

tools/testing/selftests/arm64/fp/sve-test.S

+10 −0
Original line number Diff line number Diff line
@@ -515,6 +515,10 @@ function barf 
	mov	x11, x1	// actual data

	mov	x12, x2	// data size



#ifdef SSVE

	mrs	x13, S3_3_C4_C2_2

#endif



	puts	"Mismatch: PID="

	mov	x0, x20

	bl	putdec
@@ -534,6 +538,12 @@ function barf 
	bl	dumphex

	puts	"]\n"



#ifdef SSVE

	puts	"\tSVCR: "

	mov	x0, x13

	bl	putdecn

#endif



	mov	x8, #__NR_getpid

	svc	#0

// fpsimd.c acitivty log dump hack

tools/testing/selftests/arm64/fp/za-test.S

+6 −0
Original line number Diff line number Diff line
@@ -333,6 +333,9 @@ function barf 
//	mov	w8, #__NR_exit

//	svc	#0

// end hack



	mrs	x13, S3_3_C4_C2_2



	smstop

	mov	x10, x0	// expected data

	mov	x11, x1	// actual data
@@ -356,6 +359,9 @@ function barf 
	mov	x1, x12

	bl	dumphex

	puts	"]\n"

	puts	"\tSVCR: "

	mov	x0, x13

	bl	putdecn



	mov	x8, #__NR_getpid

	svc	#0

tools/testing/selftests/arm64/fp/zt-test.S

+5 −0
Original line number Diff line number Diff line
@@ -267,6 +267,8 @@ function barf 
//	mov	w8, #__NR_exit

//	svc	#0

// end hack



	mrs	x13, S3_3_C4_C2_2

	smstop

	mov	x10, x0	// expected data

	mov	x11, x1	// actual data
@@ -287,6 +289,9 @@ function barf 
	mov	x1, x12

	bl	dumphex

	puts	"]\n"

	puts	"\tSVCR: "

	mov	x0, x13

	bl	putdecn



	mov	x8, #__NR_getpid

	svc	#0