linux-kernel - [PATCH v4 29/37] KVM: selftests: Export _vm_get_page_table_entry() and struct pageTableEntry/pageUpperEntry definitions

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 for Android: free password hash cracker in your pocket

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

Message-Id: <20220525090133.1264239-30-vkuznets@redhat.com>
Date:   Wed, 25 May 2022 11:01:25 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Siddharth Chandrasekaran <sidcha@...zon.de>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 29/37] KVM: selftests: Export _vm_get_page_table_entry() and struct pageTableEntry/pageUpperEntry definitions

Make it possible for tests to mangle guest's page table entries.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 .../selftests/kvm/include/x86_64/processor.h  | 34 ++++++++++++++++++
 .../selftests/kvm/lib/x86_64/processor.c      | 36 ++-----------------
 2 files changed, 36 insertions(+), 34 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index 9ad7602a257b..046807b8ea4f 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -441,6 +441,40 @@ void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid);
 void vm_install_exception_handler(struct kvm_vm *vm, int vector,
 			void (*handler)(struct ex_regs *));
 
+/* Virtual translation table structure declarations */
+struct pageUpperEntry {
+	uint64_t present:1;
+	uint64_t writable:1;
+	uint64_t user:1;
+	uint64_t write_through:1;
+	uint64_t cache_disable:1;
+	uint64_t accessed:1;
+	uint64_t ignored_06:1;
+	uint64_t page_size:1;
+	uint64_t ignored_11_08:4;
+	uint64_t pfn:40;
+	uint64_t ignored_62_52:11;
+	uint64_t execute_disable:1;
+};
+
+struct pageTableEntry {
+	uint64_t present:1;
+	uint64_t writable:1;
+	uint64_t user:1;
+	uint64_t write_through:1;
+	uint64_t cache_disable:1;
+	uint64_t accessed:1;
+	uint64_t dirty:1;
+	uint64_t reserved_07:1;
+	uint64_t global:1;
+	uint64_t ignored_11_09:3;
+	uint64_t pfn:40;
+	uint64_t ignored_62_52:11;
+	uint64_t execute_disable:1;
+};
+
+struct pageTableEntry *_vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid,
+						uint64_t vaddr);
 uint64_t vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid, uint64_t vaddr);
 void vm_set_page_table_entry(struct kvm_vm *vm, int vcpuid, uint64_t vaddr,
 			     uint64_t pte);
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index 9f000dfb5594..f8090b521357 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -19,38 +19,6 @@
 
 vm_vaddr_t exception_handlers;
 
-/* Virtual translation table structure declarations */
-struct pageUpperEntry {
-	uint64_t present:1;
-	uint64_t writable:1;
-	uint64_t user:1;
-	uint64_t write_through:1;
-	uint64_t cache_disable:1;
-	uint64_t accessed:1;
-	uint64_t ignored_06:1;
-	uint64_t page_size:1;
-	uint64_t ignored_11_08:4;
-	uint64_t pfn:40;
-	uint64_t ignored_62_52:11;
-	uint64_t execute_disable:1;
-};
-
-struct pageTableEntry {
-	uint64_t present:1;
-	uint64_t writable:1;
-	uint64_t user:1;
-	uint64_t write_through:1;
-	uint64_t cache_disable:1;
-	uint64_t accessed:1;
-	uint64_t dirty:1;
-	uint64_t reserved_07:1;
-	uint64_t global:1;
-	uint64_t ignored_11_09:3;
-	uint64_t pfn:40;
-	uint64_t ignored_62_52:11;
-	uint64_t execute_disable:1;
-};
-
 void regs_dump(FILE *stream, struct kvm_regs *regs,
 	       uint8_t indent)
 {
@@ -282,8 +250,8 @@ void virt_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr)
 	__virt_pg_map(vm, vaddr, paddr, X86_PAGE_SIZE_4K);
 }
 
-static struct pageTableEntry *_vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid,
-						       uint64_t vaddr)
+struct pageTableEntry *_vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid,
+						uint64_t vaddr)
 {
 	uint16_t index[4];
 	struct pageUpperEntry *pml4e, *pdpe, *pde;
-- 
2.35.3