[v10,36/39] KVM: selftests: Allocate Hyper-V partition assist page

Commit Message

Vitaly Kuznetsov Sept. 21, 2022, 3:24 p.m. UTC

In preparation to testing Hyper-V L2 TLB flush hypercalls, allocate
so-called Partition assist page.

Signed-off-by: Vitaly Kuznetsov <[e-mail]>
---
 tools/testing/selftests/kvm/include/x86_64/hyperv.h | 5 +++++
 tools/testing/selftests/kvm/lib/x86_64/hyperv.c     | 5 +++++
 2 files changed, 10 insertions(+)

Patch

diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
index e00ce9e122f4..e0c0dc4b3d5c 100644
--- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h
+++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
@@ -271,6 +271,11 @@  struct hyperv_test_pages {
 	uint64_t vp_assist_gpa;
 	void *vp_assist;
 
+	/* Partition assist page */
+	void *partition_assist_hva;
+	uint64_t partition_assist_gpa;
+	void *partition_assist;
+
 	/* Enlightened VMCS */
 	void *enlightened_vmcs_hva;
 	uint64_t enlightened_vmcs_gpa;
diff --git a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c b/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
index e44bb5cc8566..e222db65a188 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/hyperv.c
@@ -19,6 +19,11 @@  vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm, vm_vaddr_t *p_hv_pages_gva)
 	hv->vp_assist_hva = addr_gva2hva(vm, (uintptr_t)hv->vp_assist);
 	hv->vp_assist_gpa = addr_gva2gpa(vm, (uintptr_t)hv->vp_assist);
 
+	/* Setup of a region of guest memory for the partition assist page. */
+	hv->partition_assist = (void *)vm_vaddr_alloc_page(vm);
+	hv->partition_assist_hva = addr_gva2hva(vm, (uintptr_t)hv->partition_assist);
+	hv->partition_assist_gpa = addr_gva2gpa(vm, (uintptr_t)hv->partition_assist);
+
 	/* Setup of a region of guest memory for the enlightened VMCS. */
 	hv->enlightened_vmcs = (void *)vm_vaddr_alloc_page(vm);
 	hv->enlightened_vmcs_hva = addr_gva2hva(vm, (uintptr_t)hv->enlightened_vmcs);