This is a reviewed version of the guest interface (hypercall+MSR) for SEV live migration. The differences lie mostly in the API for userspace. In particular: - the CPUID feature is not exposed in KVM_GET_SUPPORTED_CPUID - the hypercall must be enabled manually with KVM_ENABLE_CAP - the MSR has sensible behavior if not filtered (reads as zero, writes must leave undefined bits as zero or they #GP) v1->v2: reviewed KVM_CAP_EXIT_HYPERCALL semantics, split CPUID bits so that the migration control MSR can be used for TDX Ashish Kalra (1): KVM: X86: Introduce KVM_HC_PAGE_ENC_STATUS hypercall Paolo Bonzini (1): KVM: x86: add MSR_KVM_MIGRATION_CONTROL Documentation/virt/kvm/api.rst | 19 ++++++++++ Documentation/virt/kvm/cpuid.rst | 9 +++++ Documentation/virt/kvm/hypercalls.rst | 15 ++++++++ Documentation/virt/kvm/msr.rst | 10 ++++++ arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/include/uapi/asm/kvm_para.h | 5 +++ arch/x86/kvm/cpuid.c | 3 +- arch/x86/kvm/x86.c | 50 +++++++++++++++++++++++++++ include/uapi/linux/kvm.h | 1 + include/uapi/linux/kvm_para.h | 1 + 10 files changed, 114 insertions(+), 1 deletion(-) -- 2.26.2
