On 04/06/20 01:56, Jim Mattson wrote: > It's been about 6 months since v2. Sorry for the delay. Initially, this > was a single patch to add information to KVM_EXIT_FAIL_ENTRY to help > identify a defective CPU. It has gotten a little more complicated, > since Peter Shier pointed out that the vCPU thread may have migrated > between the time of failure and the KVM exit. Fortunately, the SEV folks > started to make the necessary information available with "last_cpu," but > only on AMD and only with SEV. The current version expands upon that by > making "last_cpu" available in all configurations on AMD and Intel. > > v2: Use vcpu->cpu rather than raw_smp_processor_id() (Liran). > v3: Record the last logical processor to run the vCPU thread (Peter). > Add the "last CPU" information to KVM_EXIT_INTERNAL_ERROR exits as > well as KVM_EXIT_FAIL_ENTRY [except for "EMULATION" errors]. > (Liran & Paolo). > v4: Move last_cpu into kvm_vcpu_arch as last_vmentry_cpu, and set this > field in vcpu_enter_guest (Sean). > > Jim Mattson (6): > kvm: svm: Prefer vcpu->cpu to raw_smp_processor_id() > kvm: svm: Always set svm->last_cpu on VMRUN > kvm: vmx: Add last_cpu to struct vcpu_vmx > kvm: x86: Add "last CPU" to some KVM_EXIT information > kvm: x86: Move last_cpu into kvm_vcpu_arch as last_vmentry_cpu > kvm: x86: Set last_vmentry_cpu in vcpu_enter_guest > > Documentation/virt/kvm/api.rst | 1 + > arch/x86/include/asm/kvm_host.h | 3 +++ > arch/x86/kvm/svm/sev.c | 3 +-- > arch/x86/kvm/svm/svm.c | 13 ++++++------- > arch/x86/kvm/svm/svm.h | 3 --- > arch/x86/kvm/vmx/vmx.c | 10 ++++++++-- > arch/x86/kvm/x86.c | 2 ++ > include/uapi/linux/kvm.h | 2 ++ > 8 files changed, 23 insertions(+), 14 deletions(-) > Queued, thanks. (It would have been fine to squash patches 3-5-6 together, too). Paolo
