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[11/16] KVM: SVM: Make KVM_AMD depend on CPU_SUP_AMD or CPU_SUP_HYGON

Message ID 20221201232655.290720-12-seanjc@google.com (mailing list archive)
State New, archived
Headers show
Series x86/reboot: KVM: Clean up "emergency" virt code | expand

Commit Message

Sean Christopherson Dec. 1, 2022, 11:26 p.m. UTC 
Make building KVM SVM support depend on support for AMD or Hygon.  KVM
already effectively restricts SVM support to AMD and Hygon by virtue of
the vendor string checks in cpu_has_svm(), and KVM VMX supports depends
on one of its three known vendors (Intel, Centaur, or Zhaoxin).

Add the CPU_SUP_HYGON clause even though CPU_SUP_HYGON selects CPU_SUP_AMD
to document that KVM SVM support isn't just for AMD CPUs, and to prevent
breakage should Hygon support ever become a standalone thing.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 8e578311ca9d..0d403e9b6a47 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -102,7 +102,7 @@  config X86_SGX_KVM
 
 config KVM_AMD
 	tristate "KVM for AMD processors support"
-	depends on KVM
+	depends on KVM && (CPU_SUP_AMD || CPU_SUP_HYGON)
 	help
 	  Provides support for KVM on AMD processors equipped with the AMD-V
 	  (SVM) extensions.