As for SVE provide a sysctl which allows the default SME vector length to
be configured.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220419112247.711548-11-broonie@kernel.orgSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>