[v5,19/19] KVM: VMX: Allow KVM_INTEL when building for Centaur and/or Zhaoxin CPUs
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Message ID 20191221044513.21680-20-sean.j.christopherson@intel.com
State Mainlined
Commit 8f63aaf5c493c6502a058585cdfa3c71cdf8c44a
Headers show
  • x86/cpu: Clean up handling of VMX features
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Commit Message

Sean Christopherson Dec. 21, 2019, 4:45 a.m. UTC
Change the dependency for KVM_INTEL, i.e. KVM w/ VMX, from Intel CPUs to
any CPU that supports the IA32_FEAT_CTL MSR and thus VMX functionality.
This effectively allows building KVM_INTEL for Centaur and Zhaoxin CPUs.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
 arch/x86/kvm/Kconfig | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

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diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 840e12583b85..991019d5eee1 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -60,13 +60,11 @@  config KVM
 	  If unsure, say N.
 config KVM_INTEL
-	tristate "KVM for Intel processors support"
-	depends on KVM
-	# for perf_guest_get_msrs():
-	depends on CPU_SUP_INTEL
+	tristate "KVM for Intel (and compatible) processors support"
+	depends on KVM && IA32_FEAT_CTL
-	  Provides support for KVM on Intel processors equipped with the VT
-	  extensions.
+	  Provides support for KVM on processors equipped with Intel's VT
+	  extensions, a.k.a. Virtual Machine Extensions (VMX).
 	  To compile this as a module, choose M here: the module
 	  will be called kvm-intel.