On Wed, 04 Sep 2024 09:24:16 +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.
>
> [...]
Applied to next, thanks!
[1/3] KVM: arm64: Simplify handling of CNTKCTL_EL12
commit: 989fce63b2cb5061701c9fa04711d992dfaff5c6
[2/3] KVM: arm64: Simplify visibility handling of AArch32 SPSR_*
commit: 84ed45456cee7e77effea8407f4f32b262f2e2ea
[3/3] KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier
commit: 0746096faca01823021f662282e1f067a69b965b
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
