fundamental: share constants for confidential virt detection

Signed-off-by: Daniel P. Berrangé <[email protected]> (cherry picked from commit 129b9e3) Related: RHEL-50651
redhat-plumbers · Aug 22, 2024 · 5d90ada · 5d90ada
1 parent 11992ca
commit 5d90ada
Showing 2 changed files with 73 additions and 66 deletions.
diff --git a/src/basic/confidential-virt.c b/src/basic/confidential-virt.c
@@ -5,82 +5,17 @@
 #endif
 #include <errno.h>
 #include <fcntl.h>
-#include <stdint.h>
 #include <stdlib.h>
 #include <unistd.h>
 
+#include "confidential-virt-fundamental.h"
 #include "confidential-virt.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "missing_threads.h"
 #include "string-table.h"
 #include "utf8.h"
 
-#define CPUID_PROCESSOR_INFO_AND_FEATURE_BITS UINT32_C(0x1)
-
-/*
- * AMD64 Architecture Programmer’s Manual Volume 3:
- * General-Purpose and System Instructions.
- * Chapter: E4.1 - Maximum Extended Function Number and Vendor String
- *  https://www.amd.com/system/files/TechDocs/24594.pdf
- */
-#define CPUID_GET_HIGHEST_FUNCTION UINT32_C(0x80000000)
-
-/*
- * AMD64 Architecture Programmer’s Manual Volume 3:
- * General-Purpose and System Instructions.
- * Chapter: E4.17 - Encrypted Memory Capabilities
- *  https://www.amd.com/system/files/TechDocs/24594.pdf
- */
-#define CPUID_AMD_GET_ENCRYPTED_MEMORY_CAPABILITIES UINT32_C(0x8000001f)
-
-/*
- * AMD64 Architecture Programmer’s Manual Volume 3:
- * General-Purpose and System Instructions.
- * Chapter: 15.34.10 - SEV_STATUS MSR
- * https://www.amd.com/system/files/TechDocs/24593.pdf
- */
-#define MSR_AMD64_SEV UINT32_C(0xc0010131)
-
-/*
- * Intel® TDX Module v1.5 Base Architecture Specification
- * Chapter: 11.2
- * https://www.intel.com/content/www/us/en/content-details/733575/intel-tdx-module-v1-5-base-architecture-specification.html
- */
-
-#define CPUID_INTEL_TDX_ENUMERATION UINT32_C(0x21)
-
-/* Requirements for Implementing the Microsoft Hypervisor Interface
- * https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/tlfs
- */
-#define CPUID_HYPERV_VENDOR_AND_MAX_FUNCTIONS UINT32_C(0x40000000)
-
-#define CPUID_HYPERV_FEATURES UINT32_C(0x40000003)
-
-#define CPUID_HYPERV_ISOLATION_CONFIG UINT32_C(0x4000000C)
-
-#define CPUID_HYPERV_MIN UINT32_C(0x40000005)
-#define CPUID_HYPERV_MAX UINT32_C(0x4000ffff)
-
-#define CPUID_SIG_AMD       "AuthenticAMD"
-#define CPUID_SIG_INTEL     "GenuineIntel"
-#define CPUID_SIG_INTEL_TDX "IntelTDX    "
-#define CPUID_SIG_HYPERV    "Microsoft Hv"
-
-/* ecx bit 31: set => hyperpvisor, unset => bare metal */
-#define CPUID_FEATURE_HYPERVISOR (UINT32_C(1) << 31)
-
-/* Linux include/asm-generic/hyperv-tlfs.h */
-#define CPUID_HYPERV_CPU_MANAGEMENT (UINT32_C(1) << 12) /* root partition */
-#define CPUID_HYPERV_ISOLATION      (UINT32_C(1) << 22) /* confidential VM partition */
-
-#define CPUID_HYPERV_ISOLATION_TYPE_MASK UINT32_C(0xf)
-#define CPUID_HYPERV_ISOLATION_TYPE_SNP 2
-
-#define EAX_SEV     (UINT32_C(1) << 1)
-#define MSR_SEV     (UINT64_C(1) << 0)
-#define MSR_SEV_ES  (UINT64_C(1) << 1)
-#define MSR_SEV_SNP (UINT64_C(1) << 2)
 
 #if defined(__x86_64__)
 

diff --git a/src/fundamental/confidential-virt-fundamental.h b/src/fundamental/confidential-virt-fundamental.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdint.h>
+
+/* Keep CVM detection logic in this file at feature parity with
+ * that in src/efi/boot/vmm.c */
+
+#define CPUID_PROCESSOR_INFO_AND_FEATURE_BITS UINT32_C(0x1)
+
+/*
+ * AMD64 Architecture Programmer’s Manual Volume 3:
+ * General-Purpose and System Instructions.
+ * Chapter: E4.1 - Maximum Extended Function Number and Vendor String
+ *  https://www.amd.com/system/files/TechDocs/24594.pdf
+ */
+#define CPUID_GET_HIGHEST_FUNCTION UINT32_C(0x80000000)
+
+/*
+ * AMD64 Architecture Programmer’s Manual Volume 3:
+ * General-Purpose and System Instructions.
+ * Chapter: E4.17 - Encrypted Memory Capabilities
+ *  https://www.amd.com/system/files/TechDocs/24594.pdf
+ */
+#define CPUID_AMD_GET_ENCRYPTED_MEMORY_CAPABILITIES UINT32_C(0x8000001f)
+
+/*
+ * AMD64 Architecture Programmer’s Manual Volume 3:
+ * General-Purpose and System Instructions.
+ * Chapter: 15.34.10 - SEV_STATUS MSR
+ * https://www.amd.com/system/files/TechDocs/24593.pdf
+ */
+#define MSR_AMD64_SEV UINT32_C(0xc0010131)
+
+/*
+ * Intel® TDX Module v1.5 Base Architecture Specification
+ * Chapter: 11.2
+ * https://www.intel.com/content/www/us/en/content-details/733575/intel-tdx-module-v1-5-base-architecture-specification.html
+ */
+
+#define CPUID_INTEL_TDX_ENUMERATION UINT32_C(0x21)
+
+/* Requirements for Implementing the Microsoft Hypervisor Interface
+ * https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/tlfs
+ */
+#define CPUID_HYPERV_VENDOR_AND_MAX_FUNCTIONS UINT32_C(0x40000000)
+
+#define CPUID_HYPERV_FEATURES UINT32_C(0x40000003)
+
+#define CPUID_HYPERV_ISOLATION_CONFIG UINT32_C(0x4000000C)
+
+#define CPUID_HYPERV_MIN UINT32_C(0x40000005)
+#define CPUID_HYPERV_MAX UINT32_C(0x4000ffff)
+
+#define CPUID_SIG_AMD       "AuthenticAMD"
+#define CPUID_SIG_INTEL     "GenuineIntel"
+#define CPUID_SIG_INTEL_TDX "IntelTDX    "
+#define CPUID_SIG_HYPERV    "Microsoft Hv"
+
+/* ecx bit 31: set => hyperpvisor, unset => bare metal */
+#define CPUID_FEATURE_HYPERVISOR (UINT32_C(1) << 31)
+
+/* Linux include/asm-generic/hyperv-tlfs.h */
+#define CPUID_HYPERV_CPU_MANAGEMENT (UINT32_C(1) << 12) /* root partition */
+#define CPUID_HYPERV_ISOLATION      (UINT32_C(1) << 22) /* confidential VM partition */
+
+#define CPUID_HYPERV_ISOLATION_TYPE_MASK UINT32_C(0xf)
+#define CPUID_HYPERV_ISOLATION_TYPE_SNP 2
+
+#define EAX_SEV     (UINT32_C(1) << 1)
+#define MSR_SEV     (UINT64_C(1) << 0)
+#define MSR_SEV_ES  (UINT64_C(1) << 1)
+#define MSR_SEV_SNP (UINT64_C(1) << 2)