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# a1d71112 13-Sep-2021 Mark Brown <[email protected]>

selftests: arm64: More comprehensively test the SVE ptrace interface

Currently the selftest for the SVE register set is not quite as thorough
as is desirable - it only validates that the value of a

selftests: arm64: More comprehensively test the SVE ptrace interface

Currently the selftest for the SVE register set is not quite as thorough
as is desirable - it only validates that the value of a single Z register
is not modified by a partial write to a lower numbered Z register after
having previously been set through the FPSIMD regset.

Make this more thorough:
- Test the ability to set vector lengths and enumerate those supported in
the system.
- Validate data in all Z and P registers, plus FPSR and FPCR.
- Test reads via the FPSIMD regset after set via the SVE regset.

There's still some oversights, the main one being that due to the need to
generate a pattern in FFR and the fact that this rewrite is primarily
motivated by SME's streaming SVE which doesn't have FFR we don't currently
test FFR. Update the TODO to reflect those that occurred to me (and fix an
adjacent typo in there).

Signed-off-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

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Revision tags: v5.15-rc1, v5.14, v5.14-rc7, v5.14-rc6, v5.14-rc5
# e96595c5 03-Aug-2021 Mark Brown <[email protected]>

kselftest/arm64: Add a TODO list for floating point tests

Write down some ideas for additional coverage for floating point in case
someone feels inspired to look into them.

Signed-off-by: Mark Brow

kselftest/arm64: Add a TODO list for floating point tests

Write down some ideas for additional coverage for floating point in case
someone feels inspired to look into them.

Signed-off-by: Mark Brown <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

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