[PATCH v4 33/37] KVM: selftests: nSVM: Allocate Hyper-V partition assist and VP assist pages

Vitaly Kuznetsov
2022-05-25T09:06:53Z

In preparation to testing Hyper-V L2 TLB flush hypercalls, allocate VP
assist and Partition assist pages and link them to 'struct svm_test_data'.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
tools/testing/selftests/kvm/include/x86_64/svm_util.h | 10 ++++++++++
tools/testing/selftests/kvm/lib/x86_64/svm.c | 10 ++++++++++
2 files changed, 20 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/x86_64/svm_util.h b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
index a25aabd8f5e7..640859b58fd6 100644
--- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h
+++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
@@ -34,6 +34,16 @@ struct svm_test_data {
void *msr; /* gva */
void *msr_hva;
uint64_t msr_gpa;
+
+ /* Hyper-V VP assist page */
+ void *vp_assist; /* gva */
+ void *vp_assist_hva;
+ uint64_t vp_assist_gpa;
+
+ /* Hyper-V Partition assist page */
+ void *partition_assist; /* gva */
+ void *partition_assist_hva;
+ uint64_t partition_assist_gpa;
};

struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva);
diff --git a/tools/testing/selftests/kvm/lib/x86_64/svm.c b/tools/testing/selftests/kvm/lib/x86_64/svm.c
index 736ee4a23df6..c284e8f87f5c 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/svm.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/svm.c
@@ -48,6 +48,16 @@ vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva)
svm->msr_gpa = addr_gva2gpa(vm, (uintptr_t)svm->msr);
memset(svm->msr_hva, 0, getpagesize());

+ svm->vp_assist = (void *)vm_vaddr_alloc_page(vm);
+ svm->vp_assist_hva = addr_gva2hva(vm, (uintptr_t)svm->vp_assist);
+ svm->vp_assist_gpa = addr_gva2gpa(vm, (uintptr_t)svm->vp_assist);
+ memset(svm->vp_assist_hva, 0, getpagesize());
+
+ svm->partition_assist = (void *)vm_vaddr_alloc_page(vm);
+ svm->partition_assist_hva = addr_gva2hva(vm, (uintptr_t)svm->partition_assist);
+ svm->partition_assist_gpa = addr_gva2gpa(vm, (uintptr_t)svm->partition_assist);
+ memset(svm->partition_assist_hva, 0, getpagesize());
+
*p_svm_gva = svm_gva;
return svm;
}
--
2.35.3