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Add the first one too: +whether the machine is running as a host for SEV-SNP guests. + +Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> +Signed-off-by: Michael Roth <michael.roth@amd.com> +--- + arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++ + include/linux/cc_platform.h | 12 +++++++++ + 2 files changed, 64 insertions(+) + +diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c +index d07be9d05cd0..8c3fae23d3c6 100644 +--- a/arch/x86/coco/core.c ++++ b/arch/x86/coco/core.c +@@ -16,6 +16,11 @@ + enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE; + u64 cc_mask __ro_after_init; + ++static struct cc_attr_flags { ++ __u64 host_sev_snp : 1, ++ __resv : 63; ++} cc_flags; ++ + static bool noinstr intel_cc_platform_has(enum cc_attr attr) + { + switch (attr) { +@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr) + case CC_ATTR_GUEST_SEV_SNP: + return sev_status & MSR_AMD64_SEV_SNP_ENABLED; + ++ case CC_ATTR_HOST_SEV_SNP: ++ return cc_flags.host_sev_snp; ++ + default: + return false; + } +@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val) + } + } + EXPORT_SYMBOL_GPL(cc_mkdec); ++ ++static void amd_cc_platform_clear(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 0; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_clear(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_clear(attr); ++ break; ++ default: ++ break; ++ } ++} ++ ++static void amd_cc_platform_set(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 1; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_set(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_set(attr); ++ break; ++ default: ++ break; ++ } ++} +diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h +index cb0d6cd1c12f..60693a145894 100644 +--- a/include/linux/cc_platform.h ++++ b/include/linux/cc_platform.h +@@ -90,6 +90,14 @@ enum cc_attr { + * Examples include TDX Guest. + */ + CC_ATTR_HOTPLUG_DISABLED, ++ ++ /** ++ * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host. ++ * ++ * The host kernel is running with the necessary features ++ * enabled to run SEV-SNP guests. ++ */ ++ CC_ATTR_HOST_SEV_SNP, + }; + + #ifdef CONFIG_ARCH_HAS_CC_PLATFORM +@@ -107,10 +115,14 @@ enum cc_attr { + * * FALSE - Specified Confidential Computing attribute is not active + */ + bool cc_platform_has(enum cc_attr attr); ++void cc_platform_set(enum cc_attr attr); ++void cc_platform_clear(enum cc_attr attr); + + #else /* !CONFIG_ARCH_HAS_CC_PLATFORM */ + + static inline bool cc_platform_has(enum cc_attr attr) { return false; } ++static inline void cc_platform_set(enum cc_attr attr) { } ++static inline void cc_platform_clear(enum cc_attr attr) { } + + #endif /* CONFIG_ARCH_HAS_CC_PLATFORM */ + +-- +2.25.1 + + +X-sender: 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Add the first one too: +whether the machine is running as a host for SEV-SNP guests. + +Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> +Signed-off-by: Michael Roth <michael.roth@amd.com> +--- + arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++ + include/linux/cc_platform.h | 12 +++++++++ + 2 files changed, 64 insertions(+) + +diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c +index d07be9d05cd0..8c3fae23d3c6 100644 +--- a/arch/x86/coco/core.c ++++ b/arch/x86/coco/core.c +@@ -16,6 +16,11 @@ + enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE; + u64 cc_mask __ro_after_init; + ++static struct cc_attr_flags { ++ __u64 host_sev_snp : 1, ++ __resv : 63; ++} cc_flags; ++ + static bool noinstr intel_cc_platform_has(enum cc_attr attr) + { + switch (attr) { +@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr) + case CC_ATTR_GUEST_SEV_SNP: + return sev_status & MSR_AMD64_SEV_SNP_ENABLED; + ++ case CC_ATTR_HOST_SEV_SNP: ++ return cc_flags.host_sev_snp; ++ + default: + return false; + } +@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val) + } + } + EXPORT_SYMBOL_GPL(cc_mkdec); ++ ++static void amd_cc_platform_clear(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 0; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_clear(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_clear(attr); ++ break; ++ default: ++ break; ++ } ++} ++ ++static void amd_cc_platform_set(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 1; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_set(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_set(attr); ++ break; ++ default: ++ break; ++ } ++} +diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h +index cb0d6cd1c12f..60693a145894 100644 +--- a/include/linux/cc_platform.h ++++ b/include/linux/cc_platform.h +@@ -90,6 +90,14 @@ enum cc_attr { + * Examples include TDX Guest. + */ + CC_ATTR_HOTPLUG_DISABLED, ++ ++ /** ++ * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host. ++ * ++ * The host kernel is running with the necessary features ++ * enabled to run SEV-SNP guests. ++ */ ++ CC_ATTR_HOST_SEV_SNP, + }; + + #ifdef CONFIG_ARCH_HAS_CC_PLATFORM +@@ -107,10 +115,14 @@ enum cc_attr { + * * FALSE - Specified Confidential Computing attribute is not active + */ + bool cc_platform_has(enum cc_attr attr); ++void cc_platform_set(enum cc_attr attr); ++void cc_platform_clear(enum cc_attr attr); + + #else /* !CONFIG_ARCH_HAS_CC_PLATFORM */ + + static inline bool cc_platform_has(enum cc_attr attr) { return false; } ++static inline void cc_platform_set(enum cc_attr attr) { } ++static inline void cc_platform_clear(enum cc_attr attr) { } + + #endif /* CONFIG_ARCH_HAS_CC_PLATFORM */ + +-- +2.25.1 diff --git a/a/content_digest b/N1/content_digest index 596a89d..8302f58 100644 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+ "X-MS-Exchange-Forest-Language: en\n" + "X-MS-Exchange-Organization-Processed-By-Journaling: Journal Agent\n" + "\n" + "From: \"Borislav Petkov (AMD)\" <bp@alien8.de>\n" + "\n" + "Add functionality to set and/or clear different attributes of the\n" + "machine as a confidential computing platform. Add the first one too:\n" + "whether the machine is running as a host for SEV-SNP guests.\n" + "\n" + "Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>\n" + "Signed-off-by: Michael Roth <michael.roth@amd.com>\n" + "---\n" + " arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++\n" + " include/linux/cc_platform.h | 12 +++++++++\n" + " 2 files changed, 64 insertions(+)\n" + "\n" + "diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c\n" + "index d07be9d05cd0..8c3fae23d3c6 100644\n" + "--- a/arch/x86/coco/core.c\n" + "+++ b/arch/x86/coco/core.c\n" + "@@ -16,6 +16,11 @@\n" + " enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE;\n" + " u64 cc_mask __ro_after_init;\n" + " \n" + "+static struct cc_attr_flags {\n" + "+\t__u64 host_sev_snp\t: 1,\n" + "+\t __resv\t\t: 63;\n" + "+} cc_flags;\n" + "+\n" + " static bool noinstr intel_cc_platform_has(enum cc_attr attr)\n" + " {\n" + " \tswitch (attr) {\n" + "@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr)\n" + " \tcase CC_ATTR_GUEST_SEV_SNP:\n" + " \t\treturn sev_status & MSR_AMD64_SEV_SNP_ENABLED;\n" + " \n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\treturn cc_flags.host_sev_snp;\n" + "+\n" + " \tdefault:\n" + " \t\treturn false;\n" + " \t}\n" + "@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val)\n" + " \t}\n" + " }\n" + " EXPORT_SYMBOL_GPL(cc_mkdec);\n" + "+\n" + "+static void amd_cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 0;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_clear(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+static void amd_cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 1;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_set(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h\n" + "index cb0d6cd1c12f..60693a145894 100644\n" + "--- a/include/linux/cc_platform.h\n" + "+++ b/include/linux/cc_platform.h\n" + "@@ -90,6 +90,14 @@ enum cc_attr {\n" + " \t * Examples include TDX Guest.\n" + " \t */\n" + " \tCC_ATTR_HOTPLUG_DISABLED,\n" + "+\n" + "+\t/**\n" + "+\t * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host.\n" + "+\t *\n" + "+\t * The host kernel is running with the necessary features\n" + "+\t * enabled to run SEV-SNP guests.\n" + "+\t */\n" + "+\tCC_ATTR_HOST_SEV_SNP,\n" + " };\n" + " \n" + " #ifdef CONFIG_ARCH_HAS_CC_PLATFORM\n" + "@@ -107,10 +115,14 @@ enum cc_attr {\n" + " * * FALSE - Specified Confidential Computing attribute is not active\n" + " */\n" + " bool cc_platform_has(enum cc_attr attr);\n" + "+void cc_platform_set(enum cc_attr attr);\n" + "+void cc_platform_clear(enum cc_attr attr);\n" + " \n" + " #else\t/* !CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + " static inline bool cc_platform_has(enum cc_attr attr) { return false; }\n" + "+static inline void cc_platform_set(enum cc_attr attr) { }\n" + "+static inline void cc_platform_clear(enum cc_attr attr) { }\n" + " \n" + " #endif\t/* CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + "-- \n" + "2.25.1\n" + "\n" + "\n" + "X-sender: <linux-kernel+bounces-125513-steffen.klassert=secunet.com@vger.kernel.org>\n" + "X-Receiver: <steffen.klassert@secunet.com> ORCPT=rfc822;steffen.klassert@secunet.com NOTIFY=NEVER; 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+ "X-MS-Exchange-Forest-Language: en\n" + "X-MS-Exchange-Organization-Processed-By-Journaling: Journal Agent\n" + "\n" + "From: \"Borislav Petkov (AMD)\" <bp@alien8.de>\n" + "\n" + "Add functionality to set and/or clear different attributes of the\n" + "machine as a confidential computing platform. Add the first one too:\n" + "whether the machine is running as a host for SEV-SNP guests.\n" + "\n" + "Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>\n" + "Signed-off-by: Michael Roth <michael.roth@amd.com>\n" + "---\n" + " arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++\n" + " include/linux/cc_platform.h | 12 +++++++++\n" + " 2 files changed, 64 insertions(+)\n" + "\n" + "diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c\n" + "index d07be9d05cd0..8c3fae23d3c6 100644\n" + "--- a/arch/x86/coco/core.c\n" + "+++ b/arch/x86/coco/core.c\n" + "@@ -16,6 +16,11 @@\n" + " enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE;\n" + " u64 cc_mask __ro_after_init;\n" + " \n" + "+static struct cc_attr_flags {\n" + "+\t__u64 host_sev_snp\t: 1,\n" + "+\t __resv\t\t: 63;\n" + "+} cc_flags;\n" + "+\n" + " static bool noinstr intel_cc_platform_has(enum cc_attr attr)\n" + " {\n" + " \tswitch (attr) {\n" + "@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr)\n" + " \tcase CC_ATTR_GUEST_SEV_SNP:\n" + " \t\treturn sev_status & MSR_AMD64_SEV_SNP_ENABLED;\n" + " \n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\treturn cc_flags.host_sev_snp;\n" + "+\n" + " \tdefault:\n" + " \t\treturn false;\n" + " \t}\n" + "@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val)\n" + " \t}\n" + " }\n" + " EXPORT_SYMBOL_GPL(cc_mkdec);\n" + "+\n" + "+static void amd_cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 0;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_clear(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+static void amd_cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 1;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_set(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h\n" + "index cb0d6cd1c12f..60693a145894 100644\n" + "--- a/include/linux/cc_platform.h\n" + "+++ b/include/linux/cc_platform.h\n" + "@@ -90,6 +90,14 @@ enum cc_attr {\n" + " \t * Examples include TDX Guest.\n" + " \t */\n" + " \tCC_ATTR_HOTPLUG_DISABLED,\n" + "+\n" + "+\t/**\n" + "+\t * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host.\n" + "+\t *\n" + "+\t * The host kernel is running with the necessary features\n" + "+\t * enabled to run SEV-SNP guests.\n" + "+\t */\n" + "+\tCC_ATTR_HOST_SEV_SNP,\n" + " };\n" + " \n" + " #ifdef CONFIG_ARCH_HAS_CC_PLATFORM\n" + "@@ -107,10 +115,14 @@ enum cc_attr {\n" + " * * FALSE - Specified Confidential Computing attribute is not active\n" + " */\n" + " bool cc_platform_has(enum cc_attr attr);\n" + "+void cc_platform_set(enum cc_attr attr);\n" + "+void cc_platform_clear(enum cc_attr attr);\n" + " \n" + " #else\t/* !CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + " static inline bool cc_platform_has(enum cc_attr attr) { return false; }\n" + "+static inline void cc_platform_set(enum cc_attr attr) { }\n" + "+static inline void cc_platform_clear(enum cc_attr attr) { }\n" + " \n" + " #endif\t/* CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + "-- \n" 2.25.1 -d7fe3e93cf47d2ddcc8f83ba2dbf3d18bc2f5704c5b3c853f3b17278a1662f79 +69e2eee167b48c2006a3790b40ff4459fd49bed31a0b986f0311940a89b54fb0
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Add the first one too: +whether the machine is running as a host for SEV-SNP guests. + +Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> +Signed-off-by: Michael Roth <michael.roth@amd.com> +--- + arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++ + include/linux/cc_platform.h | 12 +++++++++ + 2 files changed, 64 insertions(+) + +diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c +index d07be9d05cd0..8c3fae23d3c6 100644 +--- a/arch/x86/coco/core.c ++++ b/arch/x86/coco/core.c +@@ -16,6 +16,11 @@ + enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE; + u64 cc_mask __ro_after_init; + ++static struct cc_attr_flags { ++ __u64 host_sev_snp : 1, ++ __resv : 63; ++} cc_flags; ++ + static bool noinstr intel_cc_platform_has(enum cc_attr attr) + { + switch (attr) { +@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr) + case CC_ATTR_GUEST_SEV_SNP: + return sev_status & MSR_AMD64_SEV_SNP_ENABLED; + ++ case CC_ATTR_HOST_SEV_SNP: ++ return cc_flags.host_sev_snp; ++ + default: + return false; + } +@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val) + } + } + EXPORT_SYMBOL_GPL(cc_mkdec); ++ ++static void amd_cc_platform_clear(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 0; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_clear(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_clear(attr); ++ break; ++ default: ++ break; ++ } ++} ++ ++static void amd_cc_platform_set(enum cc_attr attr) ++{ ++ switch (attr) { ++ case CC_ATTR_HOST_SEV_SNP: ++ cc_flags.host_sev_snp = 1; ++ break; ++ default: ++ break; ++ } ++} ++ ++void cc_platform_set(enum cc_attr attr) ++{ ++ switch (cc_vendor) { ++ case CC_VENDOR_AMD: ++ amd_cc_platform_set(attr); ++ break; ++ default: ++ break; ++ } ++} +diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h +index cb0d6cd1c12f..60693a145894 100644 +--- a/include/linux/cc_platform.h ++++ b/include/linux/cc_platform.h +@@ -90,6 +90,14 @@ enum cc_attr { + * Examples include TDX Guest. + */ + CC_ATTR_HOTPLUG_DISABLED, ++ ++ /** ++ * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host. ++ * ++ * The host kernel is running with the necessary features ++ * enabled to run SEV-SNP guests. ++ */ ++ CC_ATTR_HOST_SEV_SNP, + }; + + #ifdef CONFIG_ARCH_HAS_CC_PLATFORM +@@ -107,10 +115,14 @@ enum cc_attr { + * * FALSE - Specified Confidential Computing attribute is not active + */ + bool cc_platform_has(enum cc_attr attr); ++void cc_platform_set(enum cc_attr attr); ++void cc_platform_clear(enum cc_attr attr); + + #else /* !CONFIG_ARCH_HAS_CC_PLATFORM */ + + static inline bool cc_platform_has(enum cc_attr attr) { return false; } ++static inline void cc_platform_set(enum cc_attr attr) { } ++static inline void cc_platform_clear(enum cc_attr attr) { } + + #endif /* CONFIG_ARCH_HAS_CC_PLATFORM */ + +-- +2.25.1 diff --git a/a/content_digest b/N2/content_digest index 596a89d..5a2bfa8 100644 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"X-MS-Exchange-Organization-IncludeInSla: False:ShadowRedundancy\n" + "\n" + "From: \"Borislav Petkov (AMD)\" <bp@alien8.de>\n" + "\n" + "Add functionality to set and/or clear different attributes of the\n" + "machine as a confidential computing platform. Add the first one too:\n" + "whether the machine is running as a host for SEV-SNP guests.\n" + "\n" + "Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>\n" + "Signed-off-by: Michael Roth <michael.roth@amd.com>\n" + "---\n" + " arch/x86/coco/core.c | 52 +++++++++++++++++++++++++++++++++++++\n" + " include/linux/cc_platform.h | 12 +++++++++\n" + " 2 files changed, 64 insertions(+)\n" + "\n" + "diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c\n" + "index d07be9d05cd0..8c3fae23d3c6 100644\n" + "--- a/arch/x86/coco/core.c\n" + "+++ b/arch/x86/coco/core.c\n" + "@@ -16,6 +16,11 @@\n" + " enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE;\n" + " u64 cc_mask __ro_after_init;\n" + " \n" + "+static struct cc_attr_flags {\n" + "+\t__u64 host_sev_snp\t: 1,\n" + "+\t __resv\t\t: 63;\n" + "+} cc_flags;\n" + "+\n" + " static bool noinstr intel_cc_platform_has(enum cc_attr attr)\n" + " {\n" + " \tswitch (attr) {\n" + "@@ -89,6 +94,9 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr)\n" + " \tcase CC_ATTR_GUEST_SEV_SNP:\n" + " \t\treturn sev_status & MSR_AMD64_SEV_SNP_ENABLED;\n" + " \n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\treturn cc_flags.host_sev_snp;\n" + "+\n" + " \tdefault:\n" + " \t\treturn false;\n" + " \t}\n" + "@@ -148,3 +156,47 @@ u64 cc_mkdec(u64 val)\n" + " \t}\n" + " }\n" + " EXPORT_SYMBOL_GPL(cc_mkdec);\n" + "+\n" + "+static void amd_cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 0;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_clear(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_clear(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+static void amd_cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (attr) {\n" + "+\tcase CC_ATTR_HOST_SEV_SNP:\n" + "+\t\tcc_flags.host_sev_snp = 1;\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "+\n" + "+void cc_platform_set(enum cc_attr attr)\n" + "+{\n" + "+\tswitch (cc_vendor) {\n" + "+\tcase CC_VENDOR_AMD:\n" + "+\t\tamd_cc_platform_set(attr);\n" + "+\t\tbreak;\n" + "+\tdefault:\n" + "+\t\tbreak;\n" + "+\t}\n" + "+}\n" + "diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h\n" + "index cb0d6cd1c12f..60693a145894 100644\n" + "--- a/include/linux/cc_platform.h\n" + "+++ b/include/linux/cc_platform.h\n" + "@@ -90,6 +90,14 @@ enum cc_attr {\n" + " \t * Examples include TDX Guest.\n" + " \t */\n" + " \tCC_ATTR_HOTPLUG_DISABLED,\n" + "+\n" + "+\t/**\n" + "+\t * @CC_ATTR_HOST_SEV_SNP: AMD SNP enabled on the host.\n" + "+\t *\n" + "+\t * The host kernel is running with the necessary features\n" + "+\t * enabled to run SEV-SNP guests.\n" + "+\t */\n" + "+\tCC_ATTR_HOST_SEV_SNP,\n" + " };\n" + " \n" + " #ifdef CONFIG_ARCH_HAS_CC_PLATFORM\n" + "@@ -107,10 +115,14 @@ enum cc_attr {\n" + " * * FALSE - Specified Confidential Computing attribute is not active\n" + " */\n" + " bool cc_platform_has(enum cc_attr attr);\n" + "+void cc_platform_set(enum cc_attr attr);\n" + "+void cc_platform_clear(enum cc_attr attr);\n" + " \n" + " #else\t/* !CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + " static inline bool cc_platform_has(enum cc_attr attr) { return false; }\n" + "+static inline void cc_platform_set(enum cc_attr attr) { }\n" + "+static inline void cc_platform_clear(enum cc_attr attr) { }\n" + " \n" + " #endif\t/* CONFIG_ARCH_HAS_CC_PLATFORM */\n" + " \n" + "-- \n" 2.25.1 -d7fe3e93cf47d2ddcc8f83ba2dbf3d18bc2f5704c5b3c853f3b17278a1662f79 +8d3014becfb03619b5dc594d3a2122759b203e04e0c2769496bb24fe43eeb8f1
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