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From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Andrew Cooper <Andrew.Cooper3@citrix.com>,
	Kai Huang <kai.huang@intel.com>, Chao Gao <chao.gao@intel.com>
Subject: [PATCH v3 11/18] KVM: SVM: Make KVM_AMD depend on CPU_SUP_AMD or CPU_SUP_HYGON
Date: Fri, 12 May 2023 16:50:19 -0700	[thread overview]
Message-ID: <20230512235026.808058-12-seanjc@google.com> (raw)
In-Reply-To: <20230512235026.808058-1-seanjc@google.com>

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(-)

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.
-- 
2.40.1.606.ga4b1b128d6-goog


  parent reply	other threads:[~2023-05-12 23:52 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-12 23:50 [PATCH v3 00/18] x86/reboot: KVM: Clean up "emergency" virt code Sean Christopherson
2023-05-12 23:50 ` [PATCH v3 01/18] x86/reboot: VMCLEAR active VMCSes before emergency reboot Sean Christopherson
2023-05-12 23:50 ` [PATCH v3 02/18] x86/reboot: Harden virtualization hooks for " Sean Christopherson
2023-05-22 12:46   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 03/18] x86/reboot: KVM: Handle VMXOFF in KVM's reboot callback Sean Christopherson
2023-05-22 12:55   ` Huang, Kai
2023-05-22 17:58     ` Sean Christopherson
2023-05-22 23:11       ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 04/18] x86/reboot: KVM: Disable SVM during reboot via virt/KVM " Sean Christopherson
2023-05-22 12:56   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 05/18] x86/reboot: Disable virtualization during reboot iff callback is registered Sean Christopherson
2023-05-22 13:04   ` Huang, Kai
2023-05-22 17:51     ` Sean Christopherson
2023-05-22 23:13       ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 06/18] x86/reboot: Assert that IRQs are disabled when turning off virtualization Sean Christopherson
2023-05-22 13:05   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 07/18] x86/reboot: Hoist "disable virt" helpers above "emergency reboot" path Sean Christopherson
2023-05-22 13:11   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 08/18] x86/reboot: Expose VMCS crash hooks if and only if KVM_{INTEL,AMD} is enabled Sean Christopherson
2023-05-22 13:11   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 09/18] x86/virt: KVM: Open code cpu_has_vmx() in KVM VMX Sean Christopherson
2023-05-22 23:41   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 10/18] x86/virt: KVM: Move VMXOFF helpers into " Sean Christopherson
2023-05-22 13:15   ` Huang, Kai
2023-05-12 23:50 ` Sean Christopherson [this message]
2023-05-12 23:50 ` [PATCH v3 12/18] x86/virt: Drop unnecessary check on extended CPUID level in cpu_has_svm() Sean Christopherson
2023-05-12 23:50 ` [PATCH v3 13/18] x86/virt: KVM: Open code cpu_has_svm() into kvm_is_svm_supported() Sean Christopherson
2023-05-22 23:44   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 14/18] KVM: SVM: Check that the current CPU supports SVM in kvm_is_svm_supported() Sean Christopherson
2023-05-22 23:18   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 15/18] KVM: VMX: Ensure CPU is stable when probing basic VMX support Sean Christopherson
2023-05-22 23:30   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 16/18] x86/virt: KVM: Move "disable SVM" helper into KVM SVM Sean Christopherson
2023-05-22 23:26   ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 17/18] KVM: x86: Force kvm_rebooting=true during emergency reboot/crash Sean Christopherson
2023-05-22 23:25   ` Huang, Kai
2023-05-23  2:02     ` Huang, Kai
2023-05-12 23:50 ` [PATCH v3 18/18] KVM: SVM: Use "standard" stgi() helper when disabling SVM Sean Christopherson

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