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For SEV-ES VMs with mirrors to be intra-host migrated they need to be able to migrate with the mirror. This is due to that fact that all VMSAs need to be added into the VM with LAUNCH_UPDATE_VMSA before lAUNCH_FINISH. Allowing migration with mirrors allows users of SEV-ES to keep the mirror VMs VMSAs during migration. Adds a list of mirror VMs for the original VM iterate through during its migration. During the iteration the owner pointers can be updated from the source to the destination. This fixes the ASID leaking issue which caused the blocking of migration of VMs with mirrors. Signed-off-by: Peter Gonda <pgonda@google.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Marc Orr <marcorr@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Message-Id: <20220211193634.3183388-1-pgonda@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.