[00/10] KVM: arm64: Add EL2 support to FEAT_S1PIE

Message

Marc Zyngier Aug. 13, 2024, 2:47 p.m. UTC

This series serves a few purposes:

- Complete the S1PIE support to include EL2
- Sneak in the EL2 system register world switch

As this is a parallel series to the one implementing Address
Translation, the S1PIE part of AT is not in any of the two. Depending
on which series goes in first, I'll add whatever is needed on top.

As mentioned in few of the patches, this implementation relies on a
very recent fix to the architecture (D22677 in [1]).

[1] https://developer.arm.com/documentation/102105/ka-04/

Marc Zyngier (10):
  KVM: arm64: nv: Handle CNTHCTL_EL2 specially
  KVM: arm64: nv: Save/Restore vEL2 sysregs
  KVM: arm64: Add TCR2_EL2 to the sysreg arrays
  KVM: arm64: Add save/restore for TCR2_EL2
  arm64: Add encoding for PIRE0_EL2
  arm64: Remove VNCR definition for PIRE0_EL2
  KVM: arm64: Add PIR{,E0}_EL2 to the sysreg arrays
  KVM: arm64: Add save/restore for PIR{,E0}_EL2
  KVM: arm64: Handle  PIR{,E0}_EL2 traps
  KVM: arm64: Sanitise ID_AA64MMFR3_EL1

 arch/arm64/include/asm/kvm_host.h          |   3 +
 arch/arm64/include/asm/vncr_mapping.h      |   1 -
 arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h |   5 +-
 arch/arm64/kvm/hyp/nvhe/sysreg-sr.c        |   2 +-
 arch/arm64/kvm/hyp/vhe/sysreg-sr.c         | 155 ++++++++++++++++++++-
 arch/arm64/kvm/sys_regs.c                  |  61 +++++++-
 arch/arm64/tools/sysreg                    |   4 +
 include/kvm/arm_arch_timer.h               |   3 +
 8 files changed, 227 insertions(+), 7 deletions(-)