[PATCH 0/6] KVM: PPC: Book3S HV: Nested guest migration fixes

Shivaprasad G Bhat
2024-06-03T11:14:20Z

The series fixes the issues exposed by the kvm-unit-tests[1]
sprs-migration test.

The SDAR, MMCR3 were seen to have some typo/refactoring bugs.
The first two patches fix them.

Though the nestedv2 APIs defined the guest state elements for
Power ISA 3.1B SPRs to save-restore with PHYP during entry-exit,
the DEXCR and HASHKEYR were ignored in code. The KVM_PPC_REG too
for them are missing without which the Qemu is not setting them
to their 'previous' value during guest migration at destination.
The remaining patches take care of this.

References:
[1]: https://github.com/kvm-unit-tests/kvm-unit-tests

---

Shivaprasad G Bhat (6):
KVM: PPC: Book3S HV: Fix the set_one_reg for MMCR3
KVM: PPC: Book3S HV: Fix the get_one_reg of SDAR
KVM: PPC: Book3S HV nestedv2: Keep nested guest DEXCR in sync
KVM: PPC: Book3S HV: Add one-reg interface for DEXCR register
KVM: PPC: Book3S HV nestedv2: Keep nested guest HASHKEYR in sync
KVM: PPC: Book3S HV: Add one-reg interface for HASHKEYR register

Documentation/virt/kvm/api.rst | 2 ++
arch/powerpc/include/asm/kvm_host.h | 2 ++
arch/powerpc/include/uapi/asm/kvm.h | 2 ++
arch/powerpc/kvm/book3s_hv.c | 16 ++++++++++++++--
arch/powerpc/kvm/book3s_hv.h | 2 ++
arch/powerpc/kvm/book3s_hv_nestedv2.c | 12 ++++++++++++
tools/arch/powerpc/include/uapi/asm/kvm.h | 2 ++
7 files changed, 36 insertions(+), 2 deletions(-)

--
Signature