Re: [PATCH v3 28/34] KVM: selftests: nVMX: Allocate Hyper-V partition assist page

Maxim Levitsky
2022-05-11T12:18:07Z

On Thu, 2022-04-14 at 15:20 +0200, Vitaly Kuznetsov wrote:
> In preparation to testing Hyper-V L2 TLB flush hypercalls, allocate
> so-called Partition assist page and link it to 'struct vmx_pages'.
>
> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> ---
> tools/testing/selftests/kvm/include/x86_64/vmx.h | 4 ++++
> tools/testing/selftests/kvm/lib/x86_64/vmx.c | 7 +++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/tools/testing/selftests/kvm/include/x86_64/vmx.h b/tools/testing/selftests/kvm/include/x86_64/vmx.h
> index 583ceb0d1457..f99922ca8259 100644
> --- a/tools/testing/selftests/kvm/include/x86_64/vmx.h
> +++ b/tools/testing/selftests/kvm/include/x86_64/vmx.h
> @@ -567,6 +567,10 @@ struct vmx_pages {
> uint64_t enlightened_vmcs_gpa;
> void *enlightened_vmcs;
>
> + void *partition_assist_hva;
> + uint64_t partition_assist_gpa;
> + void *partition_assist;
> +
> void *eptp_hva;
> uint64_t eptp_gpa;
> void *eptp;
> diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
> index d089d8b850b5..3db21e0e1a8f 100644
> --- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
> +++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
> @@ -124,6 +124,13 @@ vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva)
> vmx->enlightened_vmcs_gpa =
> addr_gva2gpa(vm, (uintptr_t)vmx->enlightened_vmcs);
>
> + /* Setup of a region of guest memory for the partition assist page. */
> + vmx->partition_assist = (void *)vm_vaddr_alloc_page(vm);
> + vmx->partition_assist_hva =
> + addr_gva2hva(vm, (uintptr_t)vmx->partition_assist);
> + vmx->partition_assist_gpa =
> + addr_gva2gpa(vm, (uintptr_t)vmx->partition_assist);
> +
> *p_vmx_gva = vmx_gva;
> return vmx;
> }

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

Best regards,
Maxim Levitsky