KVM: arm64: Get rid of REG_HIDDEN_USER
Status from this message: Applied to next, thanks!
Get series with b4
b4 am [email protected]Versions newest first
Patches in v1 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | KVM: arm64: Simplify handling of CNTKCTL_EL12arch/ | +13 | 0 replies | |
| 2/3 | KVM: arm64: Simplify visibility handling of AArch32 SPSR_*arch/ | +4 | 0 replies | |
| 3/3 | KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifierarch/ arch/ | +5 | 0 replies |
Reviews trailers per patch
None of the 3 patches has a Reviewed-by or Acked-by of their own; the series has one for all of them.
| Patch | Oliver Upton |
|---|---|
| Series | R-b |
| 1/3 | |
| 2/3 | |
| 3/3 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/3] KVM: arm64: Get rid of REG_HIDDEN_USER
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.
Marc Zyngier (3):
KVM: arm64: Simplify handling of CNTKCTL_EL12
KVM: arm64: Simplify visibility handling of AArch32 SPSR_*
KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier
arch/arm64/kvm/sys_regs.c | 52 +++++++++++++++------------------------ arch/arm64/kvm/sys_regs.h | 14 ++--------- 2 files changed, 22 insertions(+), 44 deletions(-)
Signature · 1 line
2.39.2