linux-kernel - [RFC PATCH 19/19] KVM: SVM/SEV: Allow creating VMs with Secure AVIC enabled

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Message-ID: <20250228085115.105648-20-Neeraj.Upadhyay@amd.com>
Date: Fri, 28 Feb 2025 14:21:15 +0530
From: Neeraj Upadhyay <Neeraj.Upadhyay@....com>
To: <seanjc@...gle.com>, <pbonzini@...hat.com>, <kvm@...r.kernel.org>
CC: <linux-kernel@...r.kernel.org>, <bp@...en8.de>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <dave.hansen@...ux.intel.com>, <Thomas.Lendacky@....com>,
	<nikunj@....com>, <Santosh.Shukla@....com>, <Vasant.Hegde@....com>,
	<Suravee.Suthikulpanit@....com>, <David.Kaplan@....com>, <x86@...nel.org>,
	<hpa@...or.com>, <peterz@...radead.org>, <huibo.wang@....com>,
	<naveen.rao@....com>, <binbin.wu@...ux.intel.com>, <isaku.yamahata@...el.com>
Subject: [RFC PATCH 19/19] KVM: SVM/SEV: Allow creating VMs with Secure AVIC enabled

Now that all the initialization required to enable secure AVIC is done,
set supported_vmsa_features to allow creating Secure AVIC VMs.

Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@....com>
---
 arch/x86/kvm/svm/sev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 881311227504..6b1ce8bc490c 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -3100,6 +3100,9 @@ void __init sev_hardware_setup(void)
 
 	if (sev_es_enabled && cpu_feature_enabled(X86_FEATURE_ALLOWED_SEV_FEATURES))
 		sev_supported_vmsa_features |= SVM_SEV_FEAT_ALLOWED_SEV_FEATURES;
+
+	if (sev_snp_savic_enabled)
+		sev_supported_vmsa_features |= SVM_SEV_FEAT_SECURE_AVIC;
 }
 
 void sev_hardware_unsetup(void)
-- 
2.34.1