KVM: x86: Define new #PF SGX error code bit

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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>
Message-Id: <e170c5175cb9f35f53218a7512c9e3db972b97a2.1618196135.git.kai.huang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-04-12 16:21:34 +12:00 • committed by Paolo Bonzini

parent 54f958cdaa

commit 00e7646c35

1 changed files with 2 additions and 0 deletions

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arch/x86/include/asm/kvm_host.h

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