As I'd mentioned on the list, here is my rework of Sebastian's CTR_EL0
series. Changes this time around:
- Drop the cross-validation of the guest's CTR_EL0 with CLIDR_EL1 and
the CCSIDR_EL1 hierarchy, instead independently checking these
registers against the system's CTR_EL0 value.
- Rework the idregs debugfs interface to print all VM scoped feature ID
registers, which now includes CTR_EL0.
- Only reset the VM scoped value of CTR_EL0 once for a VM
- Make feature ID register accesses go through read / write helpers,
with the intention of abstracting the layout of the registers +
adding sanity checks to writers.
What I didn't do after all is come up with a better generic way to store
ID registers at the VM scope, but the hope is that the accessors will
make that trivial to change in the future.
Oliver Upton (5):
KVM: arm64: Get sys_reg encoding from descriptor in
idregs_debug_show()
KVM: arm64: Make idregs debugfs iterator search sysreg table directly
KVM: arm64: Use read-only helper for reading VM ID registers
KVM: arm64: Add helper for writing ID regs
KVM: arm64: nv: Use accessors for modifying ID registers
Sebastian Ott (5):
KVM: arm64: unify code to prepare traps
KVM: arm64: Treat CTR_EL0 as a VM feature ID register
KVM: arm64: show writable masks for feature registers
KVM: arm64: rename functions for invariant sys regs
KVM: selftests: arm64: Test writes to CTR_EL0
arch/arm64/include/asm/kvm_emulate.h | 40 +--
arch/arm64/include/asm/kvm_host.h | 26 +-
arch/arm64/kvm/arm.c | 2 +-
arch/arm64/kvm/nested.c | 256 +++++++++---------
arch/arm64/kvm/pmu-emul.c | 2 +-
arch/arm64/kvm/sys_regs.c | 140 ++++++----
.../selftests/kvm/aarch64/set_id_regs.c | 16 ++
7 files changed, 262 insertions(+), 220 deletions(-)
base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
--
2.45.2.627.g7a2c4fd464-goog
