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linux/tools/testing/selftests/powerpc/math
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Rashmica Gupta cd1e64935f selftests/powerpc: Fix matrix multiply assist test 
The ISA states: "when ACC[i] contains defined data, the contents of VSRs
4×i to 4×i+3 are undefined until either a VSX Move From ACC instruction
is used to copy the contents of ACC[i] to VSRs 4×i to 4×i+3 or some other
instruction directly writes to one of these VSRs." We aren't doing this.

This test only works on Power10 because the hardware implementation
happens to map ACC0 to VSRs 0-3, but will fail on any other implementation
that doesn't do this. So add xxmfacc between writing to the accumulator
and accessing the VSRs.

Fixes: 3527e1ab9a ("selftests/powerpc: Add matrix multiply assist (MMA) test")
Signed-off-by: Rashmica Gupta <rashmica@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220617043935.428083-1-rashmica@linux.ibm.com
2022-07-28 16:22:15 +10:00
..
.gitignore selftests/powerpc: Add missing files to .gitignores 2022-06-29 19:37:04 +10:00
fpu_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fpu_denormal.c selftests/powerpc: Add FPU denormal test 2020-07-15 12:02:20 +10:00
fpu_preempt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fpu_signal.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fpu_syscall.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile selftests/powerpc: Add matrix multiply assist (MMA) test 2022-04-27 16:32:42 +10:00
mma.c selftests/powerpc: Add matrix multiply assist (MMA) test 2022-04-27 16:32:42 +10:00
mma.S selftests/powerpc: Fix matrix multiply assist test 2022-07-28 16:22:15 +10:00
vmx_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vmx_preempt.c selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs 2020-08-03 22:12:41 +10:00
vmx_signal.c selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs 2020-08-03 22:12:41 +10:00
vmx_syscall.c selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs 2020-08-03 22:12:41 +10:00
vsx_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vsx_preempt.c selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs 2020-08-03 22:12:41 +10:00