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| author | Sean Christopherson <seanjc@google.com> | 2024-02-23 12:42:27 -0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-04-09 10:20:28 -0700 |
| commit | 7774c8f32e99b1f314c0df7c204a897792b4f378 (patch) | |
| tree | 3532e38a5100e7033e4bebab1ac9c54530e96870 /arch | |
| parent | 19597a71a0c8603f8c8599686ac9b0ff4b846716 (diff) | |
| download | linux-stable-7774c8f32e99b1f314c0df7c204a897792b4f378.tar.gz linux-stable-7774c8f32e99b1f314c0df7c204a897792b4f378.tar.bz2 linux-stable-7774c8f32e99b1f314c0df7c204a897792b4f378.zip | |
KVM: SVM: Wrap __svm_sev_es_vcpu_run() with #ifdef CONFIG_KVM_AMD_SEV
Compile (and link) __svm_sev_es_vcpu_run() if and only if SEV support is
actually enabled. This will allow dropping non-existent 32-bit "support"
from __svm_sev_es_vcpu_run() without causing undue confusion.
Intentionally don't provide a stub (but keep the declaration), as any sane
compiler, even with things like KASAN enabled, should eliminate the call
to __svm_sev_es_vcpu_run() since sev_es_guest() unconditionally returns
"false" if CONFIG_KVM_AMD_SEV=n.
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20240223204233.3337324-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm/vmenter.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/vmenter.S b/arch/x86/kvm/svm/vmenter.S index 82637abf0b7e..6f57d496867a 100644 --- a/arch/x86/kvm/svm/vmenter.S +++ b/arch/x86/kvm/svm/vmenter.S @@ -291,6 +291,7 @@ SYM_FUNC_START(__svm_vcpu_run) SYM_FUNC_END(__svm_vcpu_run) +#ifdef CONFIG_KVM_AMD_SEV /** * __svm_sev_es_vcpu_run - Run a SEV-ES vCPU via a transition to SVM guest mode * @svm: struct vcpu_svm * @@ -389,3 +390,4 @@ SYM_FUNC_START(__svm_sev_es_vcpu_run) _ASM_EXTABLE(1b, 3b) SYM_FUNC_END(__svm_sev_es_vcpu_run) +#endif /* CONFIG_KVM_AMD_SEV */ |