[PATCH 0/3] KVM: arm64: Get rid of REG_HIDDEN_USER

[Oliver Upton]

On Wed, Sep 04, 2024 at 09:24:16AM +0100, Marc Zyngier wrote:
> REG_HIDDEN_USER was introduced as a way to deal with the ARMv8.3 flavour of
> FEAT_NV, where most EL12 sysreg accesses would trap and yet be mapped to a
> EL1 register (KVM doing in SW what FEAT_NV2 does in HW). This handling
> imposed that the EL12 register shouldn't be visible to userspace, hence the
> special REG_HIDDEN_USER visibility.
> 
> Since 4d4f52052ba8 ("KVM: arm64: nv: Drop EL12 register traps that are
> redirected to VNCR") and the admission that KVM would never be supporting
> the original FEAT_NV, REG_HIDDEN_USER only had a few users, all of which
> could either be replaced by a more ad-hoc mechanism, or removed altogether.
> 
> This series goes ahead and cleans it up for good, removing a tiny bit of
> unnecessary complexity.

Yeah, let's toss it.

Reviewed-by: Oliver Upton <oliver.upton at linux.dev>

-- 
Thanks,
Oliver