linux-kernel - [PATCH 00/12] Fixes for KVM_CAP_VM_MOVE/COPY_ENC_CONTEXT

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Date:   Mon, 22 Nov 2021 19:50:24 -0500
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     pgonda@...gle.com
Subject: [PATCH 00/12] Fixes for KVM_CAP_VM_MOVE/COPY_ENC_CONTEXT_FROM

This turned out to be a bit of a trainwreck, mostly due to
the patches being merged hastily at the end of the merge window.
For this reason, there are a few bugs for intra-host migration
as well.

Compared to the v1 I posted last week, there's many more bugfixes,
and the code I promised to avoid dangling ASIDs when a VM has
mirrors and is migrated.

Paolo

Paolo Bonzini (12):
  selftests: fix check for circular KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
  selftests: sev_migrate_tests: free all VMs
  KVM: SEV: expose KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM capability
  KVM: SEV: do not use list_replace_init on an empty list
  KVM: SEV: cleanup locking for KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
  KVM: SEV: initialize regions_list of a mirror VM
  KVM: SEV: move mirror status to destination of
    KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
  selftests: sev_migrate_tests: add tests for
    KVM_CAP_VM_COPY_ENC_CONTEXT_FROM
  KVM: SEV: Do COPY_ENC_CONTEXT_FROM with both VMs locked
  KVM: SEV: Prohibit migration of a VM that has mirrors
  KVM: SEV: do not take kvm->lock when destroying
  KVM: SEV: accept signals in sev_lock_two_vms

 arch/x86/kvm/svm/sev.c                        | 161 +++++++++--------
 arch/x86/kvm/svm/svm.h                        |   1 +
 arch/x86/kvm/x86.c                            |   1 +
 .../selftests/kvm/x86_64/sev_migrate_tests.c  | 165 ++++++++++++++++--
 4 files changed, 243 insertions(+), 85 deletions(-)

-- 
2.27.0