From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-sgx@vger.kernel.org Cc: akpm@linux-foundation.org, dave.hansen@intel.com, sean.j.christopherson@intel.com, nhorman@redhat.com, npmccallum@redhat.com, haitao.huang@intel.com, andriy.shevchenko@linux.intel.com, tglx@linutronix.de, kai.svahn@intel.com, bp@alien8.de, josh@joshtriplett.org, luto@kernel.org, kai.huang@intel.com, rientjes@google.com, cedric.xing@intel.com, puiterwijk@redhat.com, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Subject: [PATCH v28 03/22] x86/cpufeatures: x86/msr: Intel SGX Launch Control hardware bits Date: Wed, 4 Mar 2020 01:35:50 +0200 Message-ID: <20200303233609.713348-4-jarkko.sakkinen@linux.intel.com> (raw) In-Reply-To: <20200303233609.713348-1-jarkko.sakkinen@linux.intel.com> From: Sean Christopherson <sean.j.christopherson@intel.com> Add X86_FEATURE_SGX_LC, which informs whether or not the CPU supports SGX Launch Control. Add MSR_IA32_SGXLEPUBKEYHASH{0, 1, 2, 3}, which when combined contain a SHA256 hash of a 3072-bit RSA public key. SGX backed software packages, so called enclaves, are always signed. All enclaves signed with the public key are unconditionally allowed to initialize. [1] Add FEATURE_CONTROL_SGX_LE_WR bit of the feature control MSR, which informs whether the formentioned MSRs are writable or not. If the bit is off, the public key MSRs are read-only for the OS. If the MSRs are read-only, the platform must provide a launch enclave (LE). LE can create cryptographic tokens for other enclaves that they can pass together with their signature to the ENCLS(EINIT) opcode, which is used to initialize enclaves. Linux is unlikely to support the locked configuration because it takes away the control of the launch decisions from the kernel. [1] Intel SDM: 38.1.4 Intel SGX Launch Control Configuration Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Co-developed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> --- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/msr-index.h | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 42ae9fb06987..bc5ad93cbeb6 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -350,6 +350,7 @@ #define X86_FEATURE_CLDEMOTE (16*32+25) /* CLDEMOTE instruction */ #define X86_FEATURE_MOVDIRI (16*32+27) /* MOVDIRI instruction */ #define X86_FEATURE_MOVDIR64B (16*32+28) /* MOVDIR64B instruction */ +#define X86_FEATURE_SGX_LC (16*32+30) /* Software Guard Extensions Launch Control */ /* AMD-defined CPU features, CPUID level 0x80000007 (EBX), word 17 */ #define X86_FEATURE_OVERFLOW_RECOV (17*32+ 0) /* MCA overflow recovery support */ diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index e190293c8923..bae17ea2c8fe 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -566,6 +566,7 @@ #define FEAT_CTL_LOCKED BIT(0) #define FEAT_CTL_VMX_ENABLED_INSIDE_SMX BIT(1) #define FEAT_CTL_VMX_ENABLED_OUTSIDE_SMX BIT(2) +#define FEAT_CTL_SGX_LC_ENABLED BIT(17) #define FEAT_CTL_SGX_ENABLED BIT(18) #define FEAT_CTL_LMCE_ENABLED BIT(20) @@ -586,6 +587,12 @@ #define MSR_IA32_UCODE_WRITE 0x00000079 #define MSR_IA32_UCODE_REV 0x0000008b +/* Intel SGX Launch Enclave Public Key Hash MSRs */ +#define MSR_IA32_SGXLEPUBKEYHASH0 0x0000008C +#define MSR_IA32_SGXLEPUBKEYHASH1 0x0000008D +#define MSR_IA32_SGXLEPUBKEYHASH2 0x0000008E +#define MSR_IA32_SGXLEPUBKEYHASH3 0x0000008F + #define MSR_IA32_SMM_MONITOR_CTL 0x0000009b #define MSR_IA32_SMBASE 0x0000009e -- 2.25.0
next prev parent reply index Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-03 23:35 [PATCH v28 00/22] Intel SGX foundations Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 01/22] x86/sgx: Update MAINTAINERS Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 02/22] x86/cpufeatures: x86/msr: Add Intel SGX hardware bits Jarkko Sakkinen 2020-03-03 23:35 ` Jarkko Sakkinen [this message] 2020-03-03 23:35 ` [PATCH v28 04/22] x86/mm: x86/sgx: Signal SIGSEGV with PF_SGX Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 05/22] x86/sgx: Add SGX microarchitectural data structures Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 06/22] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen 2020-03-09 21:14 ` Sean Christopherson 2020-03-03 23:35 ` [PATCH v28 07/22] x86/cpu/intel: Detect SGX supprt Jarkko Sakkinen 2020-03-09 21:56 ` Sean Christopherson 2020-03-11 17:03 ` Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 08/22] x86/sgx: Enumerate and track EPC sections Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 09/22] x86/sgx: Add functions to allocate and free EPC pages Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 10/22] mm: Introduce vm_ops->may_mprotect() Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 11/22] x86/sgx: Linux Enclave Driver Jarkko Sakkinen 2020-03-05 17:40 ` Sean Christopherson 2020-03-05 18:24 ` Jethro Beekman 2020-03-05 19:04 ` Sean Christopherson 2020-03-06 19:00 ` Jarkko Sakkinen 2020-03-19 18:22 ` Dr. Greg 2020-03-06 18:58 ` Jarkko Sakkinen 2020-03-03 23:35 ` [PATCH v28 12/22] docs: x86/sgx: Document SGX micro architecture and kernel internals Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 13/22] selftests/x86: Recurse into subdirectories Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 14/22] selftests/x86: Add a selftest for SGX Jarkko Sakkinen 2020-03-04 19:27 ` Nathaniel McCallum 2020-03-05 11:33 ` Jarkko Sakkinen 2020-03-06 15:42 ` Dr. Greg 2020-03-06 19:07 ` Jarkko Sakkinen 2020-03-07 17:42 ` Dr. Greg 2020-03-10 13:08 ` Jarkko Sakkinen 2020-03-11 13:28 ` Jarkko Sakkinen [not found] ` <20200311164047.GG21852@linux.intel.com> 2020-03-13 19:24 ` Jarkko Sakkinen 2020-03-04 19:44 ` Nathaniel McCallum 2020-03-04 19:51 ` Nathaniel McCallum 2020-03-06 5:32 ` Dr. Greg 2020-03-06 19:04 ` Jarkko Sakkinen 2020-03-10 19:29 ` Haitao Huang 2020-03-11 9:13 ` Dr. Greg 2020-03-11 17:15 ` Haitao Huang 2020-03-17 1:07 ` Dr. Greg 2020-03-03 23:36 ` [PATCH v28 15/22] x86/sgx: Add provisioning Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 16/22] x86/sgx: Add a page reclaimer Jarkko Sakkinen 2020-03-05 19:03 ` Sean Christopherson 2020-03-06 18:47 ` Jarkko Sakkinen 2020-03-12 18:38 ` Sean Christopherson 2020-03-15 0:27 ` Jarkko Sakkinen 2020-03-15 1:17 ` Jarkko Sakkinen 2020-03-09 21:16 ` Sean Christopherson 2020-03-03 23:36 ` [PATCH v28 17/22] x86/sgx: ptrace() support for the SGX driver Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 18/22] x86/vdso: Add support for exception fixup in vDSO functions Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 19/22] x86/fault: Add helper function to sanitize error code Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 20/22] x86/traps: Attempt to fixup exceptions in vDSO before signaling Jarkko Sakkinen 2020-03-03 23:36 ` [PATCH v28 21/22] x86/vdso: Implement a vDSO for Intel SGX enclave call Jarkko Sakkinen 2020-03-11 17:30 ` Nathaniel McCallum 2020-03-11 17:38 ` Jethro Beekman 2020-03-11 19:15 ` Nathaniel McCallum 2020-03-13 15:48 ` Nathaniel McCallum 2020-03-13 16:46 ` Sean Christopherson 2020-03-13 18:32 ` Nathaniel McCallum 2020-03-13 18:44 ` Sean Christopherson 2020-03-13 20:14 ` Nathaniel McCallum 2020-03-13 22:08 ` Sean Christopherson 2020-03-14 14:10 ` Nathaniel McCallum 2020-03-18 23:40 ` Sean Christopherson 2020-03-19 0:38 ` Xing, Cedric 2020-03-19 1:03 ` Sean Christopherson 2020-03-20 13:55 ` Nathaniel McCallum 2020-03-15 1:25 ` Jarkko Sakkinen 2020-03-15 17:53 ` Nathaniel McCallum 2020-03-16 13:31 ` Jethro Beekman 2020-03-16 13:57 ` Nathaniel McCallum 2020-03-16 13:59 ` Jethro Beekman 2020-03-16 14:03 ` Nathaniel McCallum 2020-03-16 17:17 ` Sean Christopherson 2020-03-16 21:27 ` Jarkko Sakkinen 2020-03-16 21:29 ` Jarkko Sakkinen 2020-03-16 22:55 ` Sean Christopherson 2020-03-16 23:56 ` Xing, Cedric 2020-03-18 22:01 ` Jarkko Sakkinen 2020-03-18 22:18 ` Jarkko Sakkinen 2020-03-16 13:56 ` Jarkko Sakkinen 2020-03-16 14:01 ` Nathaniel McCallum 2020-03-16 21:38 ` Jarkko Sakkinen 2020-03-16 22:53 ` Sean Christopherson 2020-03-16 23:50 ` Xing, Cedric 2020-03-16 23:59 ` Sean Christopherson 2020-03-17 0:18 ` Xing, Cedric 2020-03-17 0:27 ` Sean Christopherson 2020-03-17 16:37 ` Nathaniel McCallum 2020-03-17 16:50 ` Nathaniel McCallum 2020-03-17 21:40 ` Xing, Cedric 2020-03-17 22:09 ` Sean Christopherson 2020-03-17 22:36 ` Xing, Cedric 2020-03-17 23:57 ` Sean Christopherson 2020-03-17 22:23 ` Xing, Cedric 2020-03-18 13:01 ` Nathaniel McCallum 2020-03-20 15:53 ` Nathaniel McCallum 2020-03-17 16:28 ` Nathaniel McCallum 2020-03-18 22:58 ` Jarkko Sakkinen 2020-03-18 22:39 ` Jarkko Sakkinen 2020-03-11 19:30 ` Nathaniel McCallum 2020-03-13 0:52 ` Sean Christopherson 2020-03-13 16:07 ` Nathaniel McCallum 2020-03-13 16:33 ` Sean Christopherson 2020-03-03 23:36 ` [PATCH v28 22/22] selftests/x86: Add vDSO selftest for SGX Jarkko Sakkinen 2020-03-04 19:24 ` [PATCH v28 00/22] Intel SGX foundations Nathaniel McCallum 2020-03-17 16:00 ` Jordan Hand 2020-03-18 21:56 ` Jarkko Sakkinen 2020-03-19 17:16 ` Dr. Greg
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