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[v8,34/39] KVM: selftests: nSVM: Allocate Hyper-V partition assist and VP assist pages

Message ID 20220714134929.1125828-35-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 July 14, 2022, 1:49 p.m. UTC 
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(+)
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Patch

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 136ba6a5d027..3922e4842c68 100644
--- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h
+++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
@@ -36,6 +36,16 @@  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;
 };
 
 #define stgi()			\
diff --git a/tools/testing/selftests/kvm/lib/x86_64/svm.c b/tools/testing/selftests/kvm/lib/x86_64/svm.c
index 37e9c0a923e0..98a47bf4cb2f 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/svm.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/svm.c
@@ -47,6 +47,16 @@  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;
 }