From: Dave Hansen <dave.hansen@intel.com>
To: Kai Huang <kai.huang@intel.com>,
linux-sgx@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org
Cc: seanjc@google.com, jarkko@kernel.org, luto@kernel.org,
rick.p.edgecombe@intel.com, haitao.huang@intel.com,
pbonzini@redhat.com, bp@alien8.de, tglx@linutronix.de,
mingo@redhat.com, hpa@zytor.com
Subject: Re: [RFC PATCH v6 14/25] x86/sgx: Move provisioning device creation out of SGX driver
Date: Fri, 5 Mar 2021 09:45:05 -0800 [thread overview]
Message-ID: <a795f7c4-9540-c06d-625f-9bb3ed14c875@intel.com> (raw)
In-Reply-To: <684c77211acfa1b162d8fbcf507b17d84da5ac11.1614338774.git.kai.huang@intel.com>
On 2/26/21 4:15 AM, Kai Huang wrote:
> From: Sean Christopherson <sean.j.christopherson@intel.com>
>
> And extract sgx_set_attribute() out of sgx_ioc_enclave_provision() and
> export it as symbol for KVM to use.
>
> Provisioning key is sensitive. SGX driver only allows to create enclave
> which can access provisioning key when enclave creator has permission to
> open /dev/sgx_provision. It should apply to VM as well, as provisioning
> key is platform specific, thus unrestricted VM can also potentially
> compromise provisioning key.
>
> Move provisioning device creation out of sgx_drv_init() to sgx_init() as
> preparation for adding SGX virtualization support, so that even SGX
> driver is not enabled due to flexible launch control is not available,
> SGX virtualization can still be enabled, and use it to restrict VM's
> capability of being able to access provisioning key.
>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
> Signed-off-by: Kai Huang <kai.huang@intel.com>
Acked-by: Dave Hansen <dave.hansen@intel.com>
next prev parent reply other threads:[~2021-03-05 17:46 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 12:14 [RFC PATCH v6 00/25] KVM SGX virtualization support Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 01/25] x86/cpufeatures: Make SGX_LC feature bit depend on SGX bit Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 02/25] x86/cpufeatures: Add SGX1 and SGX2 sub-features Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 03/25] x86/sgx: Wipe out EREMOVE from sgx_free_epc_page() Kai Huang
2021-02-26 17:08 ` Dave Hansen
2021-02-26 19:52 ` Sean Christopherson
2021-02-26 20:12 ` Dave Hansen
2021-02-26 22:34 ` Sean Christopherson
2021-03-01 6:13 ` Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 04/25] x86/sgx: Add SGX_CHILD_PRESENT hardware error code Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 05/25] x86/sgx: Introduce virtual EPC for use by KVM guests Kai Huang
2021-02-26 12:14 ` [RFC PATCH v6 06/25] x86/cpu/intel: Allow SGX virtualization without Launch Control support Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 07/25] x86/sgx: Initialize virtual EPC driver even when SGX driver is disabled Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 08/25] x86/sgx: Expose SGX architectural definitions to the kernel Kai Huang
2021-02-26 17:09 ` Dave Hansen
2021-02-26 12:15 ` [RFC PATCH v6 09/25] x86/sgx: Move ENCLS leaf definitions to sgx.h Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 10/25] x86/sgx: Add SGX2 ENCLS leaf definitions (EAUG, EMODPR and EMODT) Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 11/25] x86/sgx: Add encls_faulted() helper Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 12/25] x86/sgx: Add helper to update SGX_LEPUBKEYHASHn MSRs Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 13/25] x86/sgx: Add helpers to expose ECREATE and EINIT to KVM Kai Huang
2021-03-05 17:51 ` Dave Hansen
2021-03-08 9:30 ` Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 14/25] x86/sgx: Move provisioning device creation out of SGX driver Kai Huang
2021-03-05 17:45 ` Dave Hansen [this message]
2021-02-26 12:15 ` [RFC PATCH v6 15/25] KVM: x86: Export kvm_mmu_gva_to_gpa_{read,write}() for SGX (VMX) Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 16/25] KVM: x86: Define new #PF SGX error code bit Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 17/25] KVM: x86: Add support for reverse CPUID lookup of scattered features Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 18/25] KVM: x86: Add reverse-CPUID lookup support for scattered SGX features Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 19/25] KVM: VMX: Add basic handling of VM-Exit from SGX enclave Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 20/25] KVM: VMX: Frame in ENCLS handler for SGX virtualization Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 21/25] KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 22/25] KVM: VMX: Add emulation of SGX Launch Control LE hash MSRs Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 23/25] KVM: VMX: Add ENCLS[EINIT] handler to support SGX Launch Control (LC) Kai Huang
2021-02-26 12:15 ` [RFC PATCH v6 24/25] KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC Kai Huang
2021-02-26 12:16 ` [RFC PATCH v6 25/25] KVM: x86: Add capability to grant VM access to privileged SGX attribute Kai Huang
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