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KVM: SVM: Compile sev.c if and only if CONFIG_KVM_AMD_SEV=y
Stop compiling sev.c when CONFIG_KVM_AMD_SEV=n, as the number of #ifdefs in sev.c is getting ridiculous, and having #ifdefs inside of SEV helpers is quite confusing. To minimize #ifdefs in code flows, #ifdef away only the kvm_x86_ops hooks and the #VMGEXIT handler. Stubs are also restricted to functions that check sev_enabled and to the destruction functions sev_free_cpu() and sev_vm_destroy(), where the style of their callers is to leave checks to the callers. Most call sites instead rely on dead code elimination to take care of functions that are guarded with sev_guest() or sev_es_guest(). Signed-off-by: Sean Christopherson <seanjc@google.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-ID: <20240404121327.3107131-3-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Paolo Bonzini
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Apr 11, 2024
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