From: Sean Christopherson <sean.j.christopherson@intel.com> To: "Paolo Bonzini" <pbonzini@redhat.com>, "Radim Krčmář" <rkrcmar@redhat.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Ingo Molnar" <mingo@redhat.com>, "Borislav Petkov" <bp@alien8.de>, x86@kernel.org, "Jarkko Sakkinen" <jarkko.sakkinen@linux.intel.com>, "Sean Christopherson" <sean.j.christopherson@intel.com>, "Joerg Roedel" <joro@8bytes.org> Cc: "H. Peter Anvin" <hpa@zytor.com>, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sgx@vger.kernel.org, Andy Lutomirski <luto@amacapital.net> Subject: [RFC PATCH 12/21] KVM: x86: Define new #PF SGX error code bit Date: Fri, 26 Jul 2019 22:52:05 -0700 Message-ID: <20190727055214.9282-13-sean.j.christopherson@intel.com> (raw) In-Reply-To: <20190727055214.9282-1-sean.j.christopherson@intel.com> Page faults that are signaled by the SGX Enclave Page Cache Map (EPCM), as opposed to the traditional IA32/EPT page tables, set an SGX bit in the error code to indicate that the #PF was induced by SGX. KVM will need to emulate this behavior as part of its trap-and-execute-EINIT scheme needed to virtualize SGX Launch Control, e.g. if EINIT itself faults due to the EPC being zapped by hardware after suspend-resume. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> --- arch/x86/include/asm/kvm_host.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 397d755bb353..103df8cbdd24 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -201,6 +201,7 @@ enum { #define PFERR_RSVD_BIT 3 #define PFERR_FETCH_BIT 4 #define PFERR_PK_BIT 5 +#define PFERR_SGX_BIT 15 #define PFERR_GUEST_FINAL_BIT 32 #define PFERR_GUEST_PAGE_BIT 33 @@ -210,6 +211,7 @@ enum { #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT) #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT) #define PFERR_PK_MASK (1U << PFERR_PK_BIT) +#define PFERR_SGX_MASK (1U << PFERR_SGX_BIT) #define PFERR_GUEST_FINAL_MASK (1ULL << PFERR_GUEST_FINAL_BIT) #define PFERR_GUEST_PAGE_MASK (1ULL << PFERR_GUEST_PAGE_BIT) -- 2.22.0
next prev parent reply index Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-27 5:51 [RFC PATCH 00/21] x86/sgx: KVM: Add SGX virtualization Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 01/21] x86/sgx: Add defines for SGX device minor numbers Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 02/21] x86/sgx: Move bus registration and device init to common code Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 03/21] x86/sgx: Move provisioning device " Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 04/21] x86/sgx: Add /dev/sgx/virt_epc device to allocate "raw" EPC for VMs Sean Christopherson 2019-07-27 17:44 ` Andy Lutomirski 2019-07-29 17:05 ` Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 05/21] x86/sgx: Expose SGX architectural definitions to the kernel Sean Christopherson 2019-07-27 5:51 ` [RFC PATCH 06/21] KVM: x86: Add SGX sub-features leaf to reverse CPUID table Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 07/21] KVM: x86: Add WARN_ON_ONCE(index!=0) in __do_cpuid_ent Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 08/21] KVM: x86: Add kvm_x86_ops hook to short circuit emulation Sean Christopherson 2019-07-27 17:38 ` Andy Lutomirski 2019-07-30 2:49 ` Sean Christopherson 2019-08-16 0:47 ` Andy Lutomirski 2019-08-19 22:01 ` Sean Christopherson 2019-08-20 1:34 ` Andy Lutomirski 2019-08-20 1:41 ` Sean Christopherson 2019-07-30 3:08 ` Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 09/21] KVM: VMX: Add basic handling of VM-Exit from SGX enclave Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 10/21] KVM: x86: Export kvm_mmu_gva_to_gpa_{read,write}() for VMX/SGX Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 11/21] KVM: x86: Export kvm_propagate_fault (as kvm_propagate_page_fault) Sean Christopherson 2019-07-27 5:52 ` Sean Christopherson [this message] 2019-07-27 5:52 ` [RFC PATCH 13/21] x86/sgx: Move the intermediate EINIT helper into the driver Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 14/21] x86/sgx: Add helpers to expose ECREATE and EINIT to KVM Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 15/21] KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 16/21] KVM: VMX: Edd emulation of SGX Launch Control LE hash MSRs Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 17/21] KVM: VMX: Add handler for ENCLS[EINIT] to support SGX Launch Control Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 18/21] KVM: x86: Invoke kvm_x86_ops->cpuid_update() after kvm_update_cpuid() Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 19/21] KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 20/21] x86/sgx: Export sgx_set_attribute() for use by KVM Sean Christopherson 2019-07-27 5:52 ` [RFC PATCH 21/21] KVM: x86: Add capability to grant VM access to privileged SGX attribute Sean Christopherson 2019-07-27 17:32 ` Andy Lutomirski
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