On Fri, Feb 25, 2022 at 04:58:54PM +0000, Mark Brown wrote: > The vector lengths used for SME are controlled through a similar set of > registers to those for SVE and enumerated using a similar algorithm with > some slight differences due to the fact that unlike SVE there are no > restrictions on which combinations of vector lengths can be supported > nor any mandatory vector lengths which must be implemented. Add a new > vector type and implement support for enumerating it. > > One slightly awkward feature is that we need to read the current vector > length using a different instruction (or enter streaming mode which > would have the same issue and be higher cost). Rather than add an ops > structure we add special cases directly in the otherwise generic > vec_probe_vqs() function, this is a bit inelegant but it's the only > place where this is an issue. > > Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
