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kselftest/arm64: Log SVCR when the SME tests barf

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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: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20231205-arm64-kselftest-log-svcr-v1-1-b77abd9ee7f3@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown 2023-12-05 14:24:44 +00:00 committed by Will Deacon
parent 33c1a7785a
commit 48f7ab21f7
3 changed files with 21 additions and 0 deletions
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10
tools/testing/selftests/arm64/fp/sve-test.S
View File

@ -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

6
tools/testing/selftests/arm64/fp/za-test.S
View File

@ -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

5
tools/testing/selftests/arm64/fp/zt-test.S
View File

@ -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