| Message ID | 20240625130042.259175-1-maz@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | KVM: arm64: Fix handling of TCR2_EL1 | expand |
On Tue, 25 Jun 2024 14:00:36 +0100, Marc Zyngier wrote: > As I'm inching towards supporting FEAT_S1PIE in a NV guest (oh, the > fun I'm having!), it has become obvious that we're missing the basics > when it comes to: > > - VM configuration: HCRX_EL2.TCR2En is forced to 1, and we blindly > save/restore stuff. > > [...] Applied to kvmarm/next, thanks! [1/5] KVM: arm64: Correctly honor the presence of FEAT_TCRX https://git.kernel.org/kvmarm/kvmarm/c/9b58e665d6b2 [2/5] KVM: arm64: Get rid of HCRX_GUEST_FLAGS https://git.kernel.org/kvmarm/kvmarm/c/a3ee9ce88ba3 [3/5] KVM: arm64: Make TCR2_EL1 save/restore dependent on the VM features https://git.kernel.org/kvmarm/kvmarm/c/1b04fd40275e [4/5] KVM: arm64: Make PIR{,E0}_EL1 save/restore conditional on FEAT_TCRX https://git.kernel.org/kvmarm/kvmarm/c/663abf04ee4d [5/5] KVM: arm64: Honor trap routing for TCR2_EL1 https://git.kernel.org/kvmarm/kvmarm/c/91e9cc70b775 -- Best, Oliver
As I'm inching towards supporting FEAT_S1PIE in a NV guest (oh, the fun I'm having!), it has become obvious that we're missing the basics when it comes to: - VM configuration: HCRX_EL2.TCR2En is forced to 1, and we blindly save/restore stuff. - trap bit description and routing: none, obviously, since we make a point in not trapping. Given that these are prerequisites for the NV work and that we should have had that from the beginning, I would like to plug them before piling more patches on top. Marc Zyngier (5): KVM: arm64: Correctly honor the presence of FEAT_TCRX KVM: arm64: Get rid of HCRX_GUEST_FLAGS KVM: arm64: Make TCR2_EL1 save/restore dependent on the VM features KVM: arm64: Make PIR{,E0}_EL1 save/restore conditional on FEAT_TCRX KVM: arm64: Honor trap routing for TCR2_EL1 arch/arm64/include/asm/kvm_arm.h | 1 - arch/arm64/kvm/emulate-nested.c | 13 ++++++++ arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 35 +++++++++++++++------- arch/arm64/kvm/sys_regs.c | 17 ++++++++++- 4 files changed, 54 insertions(+), 12 deletions(-)