KVM: allow compiling out SMM support

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Some users of KVM implement the UEFI variable store through a paravirtual device
that does not require the "SMM lockbox" component of edk2; allow them to
compile out system management mode, which is not a full implementation
especially in how it interacts with nested virtualization.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220929172016.319443-6-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Paolo Bonzini 2022-09-29 13:20:13 -04:00

parent 1d0da94cda

commit 4b8e1b3201

7 changed files with 50 additions and 3 deletions

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11

arch/x86/kvm/Kconfig

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2

arch/x86/kvm/Makefile

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12

arch/x86/kvm/smm.h

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2

arch/x86/kvm/svm/svm.c

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2

arch/x86/kvm/vmx/vmx.c

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22

arch/x86/kvm/x86.c

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2

tools/testing/selftests/kvm/x86_64/smm_test.c

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