This series serves a few purposes: - Complete the S1PIE support to include EL2 - Sneak in the EL2 system register world switch As mentioned in few of the patches, this implementation relies on a very recent fix to the architecture (D22677 in [0]). This series has seen a few changes since the initial posting [1]: - Rebased on top of the AT support branch, which is currently sitting in kvmarm/next - Add handling for S1 indirect permission in AT, which I'm sure will give Alexandru another king-sized headache - Picked Mark Brown's series [2] dealing with TCRX and S1PIE visibility, and slapped an extra fix on top for good measure - Picked up RBs from Joey, with thanks. [0] https://developer.arm.com/documentation/102105/ka-04/ [1] https://lore.kernel.org/r/20240813144738.2048302-1-maz@xxxxxxxxxx [2] https://lore.kernel.org/r/20240822-kvm-arm64-hide-pie-regs-v2-0-376624fa829c@xxxxxxxxxx Marc Zyngier (13): 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 KVM: arm64: Split S1 permission evaluation into direct and hierarchical parts KVM: arm64: Implement AT S1PIE support KVM: arm64: Rely on visibility to let PIR*_ELx/TCR2_ELx UNDEF Mark Brown (3): KVM: arm64: Define helper for EL2 registers with custom visibility KVM: arm64: Hide TCR2_EL1 from userspace when disabled for guests KVM: arm64: Hide S1PIE registers from userspace when disabled for guests arch/arm64/include/asm/kvm_host.h | 9 + arch/arm64/include/asm/vncr_mapping.h | 1 - arch/arm64/kvm/at.c | 296 ++++++++++++++++----- 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 | 114 +++++++- arch/arm64/tools/sysreg | 4 + include/kvm/arm_arch_timer.h | 3 + 9 files changed, 505 insertions(+), 84 deletions(-) -- 2.39.2
