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[v7,33/39] KVM: selftests: nVMX: Allocate Hyper-V partition assist page

Message ID 20220613133922.2875594-34-vkuznets@redhat.com (mailing list archive)
State New, archived
Headers show
Series KVM: x86: hyper-v: Fine-grained TLB flush + L2 TLB flush features | expand

Commit Message

Vitaly Kuznetsov June 13, 2022, 1:39 p.m. UTC 
In preparation to testing Hyper-V L2 TLB flush hypercalls, allocate
so-called Partition assist page and link it to 'struct vmx_pages'.

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

Patch

diff --git a/tools/testing/selftests/kvm/include/x86_64/vmx.h b/tools/testing/selftests/kvm/include/x86_64/vmx.h
index cc3604f8f1d3..f7c8184c1de8 100644
--- a/tools/testing/selftests/kvm/include/x86_64/vmx.h
+++ b/tools/testing/selftests/kvm/include/x86_64/vmx.h
@@ -570,6 +570,10 @@  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 381432741df4..2655450dd4dd 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
@@ -119,6 +119,13 @@  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;
 }