KVM: x86: allow defining return-0 static calls

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A few vendor callbacks are only used by VMX, but they return an integer
or bool value.  Introduce KVM_X86_OP_OPTIONAL_RET0 for them: if a func is
NULL in struct kvm_x86_ops, it will be changed to __static_call_return0
when updating static calls.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Paolo Bonzini 2022-02-15 13:07:10 -05:00

parent abb6d479e2

commit 5be2226f41

6 changed files with 16 additions and 33 deletions

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15

arch/x86/include/asm/kvm-x86-ops.h

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4

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/svm/avic.c

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20

arch/x86/kvm/svm/svm.c

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4

arch/x86/kvm/x86.c

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1

kernel/static_call.c

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