From: Kai Huang <kai.huang@intel.com>
To: kvm@vger.kernel.org, linux-sgx@vger.kernel.org
Cc: seanjc@google.com, pbonzini@redhat.com, bp@alien8.de,
jarkko@kernel.org, dave.hansen@intel.com, luto@kernel.org,
rick.p.edgecombe@intel.com, haitao.huang@intel.com,
Kai Huang <kai.huang@intel.com>
Subject: [PATCH v4 02/11] KVM: x86: Define new #PF SGX error code bit
Date: Thu, 8 Apr 2021 08:49:26 +1200 [thread overview]
Message-ID: <c18902d846ef22bb95cf75a2da87a65a02b4aea3.1617825858.git.kai.huang@intel.com> (raw)
In-Reply-To: <cover.1617825858.git.kai.huang@intel.com>
From: Sean Christopherson <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 scheme for
virtualizing SGX Launch Control, e.g. to inject SGX-induced #PFs if
EINIT faults in the host, and to support live migration.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Kai Huang <kai.huang@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 9bc091ecaaeb..8b1c13056768 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -227,6 +227,7 @@ enum x86_intercept_stage;
#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
@@ -236,6 +237,7 @@ enum x86_intercept_stage;
#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)
--
2.30.2
next prev parent reply other threads:[~2021-04-07 20:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 20:49 [PATCH v4 00/11] KVM SGX virtualization support (KVM part) Kai Huang
2021-04-07 20:49 ` [PATCH v4 01/11] KVM: x86: Export kvm_mmu_gva_to_gpa_{read,write}() for SGX (VMX) Kai Huang
2021-04-07 20:49 ` Kai Huang [this message]
2021-04-07 20:49 ` [PATCH v4 03/11] KVM: x86: Add support for reverse CPUID lookup of scattered features Kai Huang
2021-04-07 20:49 ` [PATCH v4 04/11] KVM: x86: Add reverse-CPUID lookup support for scattered SGX features Kai Huang
2021-04-07 20:49 ` [PATCH v4 05/11] KVM: VMX: Add basic handling of VM-Exit from SGX enclave Kai Huang
2021-04-07 20:49 ` [PATCH v4 06/11] KVM: VMX: Frame in ENCLS handler for SGX virtualization Kai Huang
2021-04-07 22:16 ` Sean Christopherson
2021-04-07 22:33 ` Kai Huang
2021-04-07 22:35 ` Sean Christopherson
2021-04-07 22:44 ` Kai Huang
2021-04-07 22:47 ` Sean Christopherson
2021-04-07 22:59 ` Kai Huang
2021-04-07 20:49 ` [PATCH v4 07/11] KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions Kai Huang
2021-04-07 21:52 ` Sean Christopherson
2021-04-07 21:58 ` Kai Huang
2021-04-07 22:04 ` Sean Christopherson
2021-04-07 22:16 ` Kai Huang
2021-04-07 22:10 ` Sean Christopherson
2021-04-07 22:15 ` Kai Huang
2021-04-07 20:49 ` [PATCH v4 08/11] KVM: VMX: Add emulation of SGX Launch Control LE hash MSRs Kai Huang
2021-04-07 20:49 ` [PATCH v4 09/11] KVM: VMX: Add ENCLS[EINIT] handler to support SGX Launch Control (LC) Kai Huang
2021-04-07 20:49 ` [PATCH v4 10/11] KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC Kai Huang
2021-04-07 20:49 ` [PATCH v4 11/11] KVM: x86: Add capability to grant VM access to privileged SGX attribute Kai Huang
2021-04-07 23:08 ` [PATCH v4 00/11] KVM SGX virtualization support (KVM part) Kai Huang
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