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 4/7] KVM: SEV: Consolidate logic for printing state of SEV{,-ES,-SNP} enabling
Date: Thu, 16 Apr 2026 16:23:26 -0700 [thread overview]
Message-ID: <20260416232329.3408497-5-seanjc@google.com> (raw)
In-Reply-To: <20260416232329.3408497-1-seanjc@google.com>
Add a helper to print enabled/unusable/disabled for SEV+ VM types in
anticipation of SNP also being subjecting to "unusable" logic.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/svm/sev.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index ea4ce371d5f3..dfeb660b8f5d 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -3050,6 +3050,11 @@ static bool is_sev_snp_initialized(void)
return initialized;
}
+static const char * __init sev_str_feature_state(bool is_supported, bool is_usable)
+{
+ return is_supported ? is_usable ? "enabled" : "unusable" : "disabled";
+}
+
void __init sev_hardware_setup(void)
{
unsigned int eax, ebx, ecx, edx, sev_asid_count, sev_es_asid_count;
@@ -3199,19 +3204,15 @@ void __init sev_hardware_setup(void)
if (boot_cpu_has(X86_FEATURE_SEV))
pr_info("SEV %s (ASIDs %u - %u)\n",
- sev_supported ? min_sev_asid <= max_sev_asid ? "enabled" :
- "unusable" :
- "disabled",
+ sev_str_feature_state(sev_supported, min_sev_asid <= max_sev_asid),
min_sev_asid, max_sev_asid);
if (boot_cpu_has(X86_FEATURE_SEV_ES))
pr_info("SEV-ES %s (ASIDs %u - %u)\n",
- sev_es_supported ? min_sev_es_asid <= max_sev_es_asid ? "enabled" :
- "unusable" :
- "disabled",
+ sev_str_feature_state(sev_es_supported, min_sev_es_asid <= max_sev_es_asid),
min_sev_es_asid, max_sev_es_asid);
if (boot_cpu_has(X86_FEATURE_SEV_SNP))
pr_info("SEV-SNP %s (ASIDs %u - %u)\n",
- str_enabled_disabled(sev_snp_supported),
+ sev_str_feature_state(sev_snp_supported, true),
min_snp_asid, max_snp_asid);
sev_enabled = sev_supported;
--
2.54.0.rc1.513.gad8abe7a5a-goog
next prev 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 ` [PATCH v3 3/7] KVM: SEV: Set supported SEV+ VM types during sev_hardware_setup() Sean Christopherson
2026-04-17 14:24 ` Tom Lendacky
2026-04-16 23:23 ` Sean Christopherson [this message]
2026-04-17 14:34 ` [PATCH v3 4/7] KVM: SEV: Consolidate logic for printing state of SEV{,-ES,-SNP} enabling 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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