linux-kernel - [PATCH 27/31] KVM: selftests: nSVM: Allocate Hyper-V partition assist and VP assist pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220311154943.2299191-28-vkuznets@redhat.com>
Date:   Fri, 11 Mar 2022 16:49:39 +0100
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        linux-hyperv@...r.kernel.org,
        Siddharth Chandrasekaran <sidcha@...zon.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 27/31] KVM: selftests: nSVM: Allocate Hyper-V partition assist and VP assist pages

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

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.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;
 }
-- 
2.35.1