arm64: fpsimd: Remove sve_set_vq() and sme_set_vq()

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The sve_set_vq() and sme_set_vq() assembly functions (and the
sve_load_vq and sme_load_vq macros they use) are open-coded forms of
sysreg_clear_set*(). There's no need for these to be implemented
out-of-line in assembly, and the 'vq_minus_1' argument is unusual and
confusing.

Use sysreg_clear_set_s() directly, where the necessary 'vq - 1' encoding
is more obviously part of encoding the register value.

For now, sve_flush_live() is left with the unusual vq_minus_1 argument.
This will be addressed in subsequent patches.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oupton@kernel.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>

...

This commit is contained in:

Mark Rutland 2026-06-03 12:06:18 +01:00 • committed by Will Deacon

parent 3efb6c7f22

commit e0cde2d2bb

4 changed files with 13 additions and 45 deletions

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2

arch/arm64/include/asm/fpsimd.h

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arch/arm64/include/asm/fpsimdmacros.h

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arch/arm64/kernel/entry-fpsimd.S

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arch/arm64/kernel/fpsimd.c

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