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From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	 Ashish Kalra <ashish.kalra@amd.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	 John Allen <john.allen@amd.com>
Cc: kvm@vger.kernel.org, linux-crypto@vger.kernel.org,
	 linux-kernel@vger.kernel.org,
	Herbert Xu <herbert@gondor.apana.org.au>,
	 Tycho Andersen <tycho@kernel.org>
Subject: [PATCH v3 3/7] KVM: SEV: Set supported SEV+ VM types during sev_hardware_setup()
Date: Thu, 16 Apr 2026 16:23:25 -0700	[thread overview]
Message-ID: <20260416232329.3408497-4-seanjc@google.com> (raw)
In-Reply-To: <20260416232329.3408497-1-seanjc@google.com>

Set the supported SEV+ VM types during sev_hardware_setup() instead of
waiting until sev_set_cpu_caps().  This will using the set of *fully*
supported VM types to print the enabled/unusable/disabled messaged.

For all intents and purposes, no functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/svm/sev.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index c2126b3c3072..ea4ce371d5f3 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -3013,18 +3013,14 @@ void sev_vm_destroy(struct kvm *kvm)
 
 void __init sev_set_cpu_caps(void)
 {
-	if (sev_enabled) {
+	if (sev_enabled)
 		kvm_cpu_cap_set(X86_FEATURE_SEV);
-		kvm_caps.supported_vm_types |= BIT(KVM_X86_SEV_VM);
-	}
-	if (sev_es_enabled) {
+
+	if (sev_es_enabled)
 		kvm_cpu_cap_set(X86_FEATURE_SEV_ES);
-		kvm_caps.supported_vm_types |= BIT(KVM_X86_SEV_ES_VM);
-	}
-	if (sev_snp_enabled) {
+
+	if (sev_snp_enabled)
 		kvm_cpu_cap_set(X86_FEATURE_SEV_SNP);
-		kvm_caps.supported_vm_types |= BIT(KVM_X86_SNP_VM);
-	}
 }
 
 static bool is_sev_snp_initialized(void)
@@ -3194,6 +3190,13 @@ void __init sev_hardware_setup(void)
 		}
 	}
 
+	if (sev_supported)
+		kvm_caps.supported_vm_types |= BIT(KVM_X86_SEV_VM);
+	if (sev_es_supported)
+		kvm_caps.supported_vm_types |= BIT(KVM_X86_SEV_ES_VM);
+	if (sev_snp_supported)
+		kvm_caps.supported_vm_types |= BIT(KVM_X86_SNP_VM);
+
 	if (boot_cpu_has(X86_FEATURE_SEV))
 		pr_info("SEV %s (ASIDs %u - %u)\n",
 			sev_supported ? min_sev_asid <= max_sev_asid ? "enabled" :
-- 
2.54.0.rc1.513.gad8abe7a5a-goog


  parent reply	other threads:[~2026-04-16 23:23 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-16 23:23 [PATCH v3 0/7] KVM: SEV: Don't advertise unusable VM types Sean Christopherson
2026-04-16 23:23 ` [PATCH v3 1/7] crypto/ccp: hoist kernel part of SNP_PLATFORM_STATUS Sean Christopherson
2026-04-17 13:48   ` Tom Lendacky
2026-04-16 23:23 ` [PATCH v3 2/7] crypto/ccp: export firmware supported vm types Sean Christopherson
2026-04-17 14:12   ` Tom Lendacky
2026-04-16 23:23 ` Sean Christopherson [this message]
2026-04-17 14:24   ` [PATCH v3 3/7] KVM: SEV: Set supported SEV+ VM types during sev_hardware_setup() Tom Lendacky
2026-04-16 23:23 ` [PATCH v3 4/7] KVM: SEV: Consolidate logic for printing state of SEV{,-ES,-SNP} enabling Sean Christopherson
2026-04-17 14:34   ` Tom Lendacky
2026-04-16 23:23 ` [PATCH v3 5/7] KVM: SEV: Don't advertise support for unusable VM types Sean Christopherson
2026-04-17 14:37   ` Tom Lendacky
2026-04-16 23:23 ` [PATCH v3 6/7] KVM: SEV: Don't advertise VM types that are disabled by firmware Sean Christopherson
2026-04-17 14:39   ` Tom Lendacky
2026-04-16 23:23 ` [PATCH v3 7/7] KVM: selftests: Teach sev_*_test about revoking VM types Sean Christopherson
2026-04-17 15:12 ` [PATCH v3 0/7] KVM: SEV: Don't advertise unusable " Tycho Andersen

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