Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Sender: "seanjc via sendgmr" <seanjc@seanjc798194.pdx.corp.google.com>
Reply-To: Sean Christopherson <seanjc@google.com>
Date:   Fri,  8 Jan 2021 16:47:10 -0800
In-Reply-To: <20210109004714.1341275-1-seanjc@google.com>
Message-Id: <20210109004714.1341275-10-seanjc@google.com>
Mime-Version: 1.0
References: <20210109004714.1341275-1-seanjc@google.com>
Subject: [PATCH 09/13] KVM: SVM: Explicitly check max SEV ASID during sev_hardware_setup()
From:   Sean Christopherson <seanjc@google.com>
To:     Paolo Bonzini <pbonzini@redhat.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>
Cc:     Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Tom Lendacky <thomas.lendacky@amd.com>,
        Borislav Petkov <bp@suse.de>,
        Brijesh Singh <brijesh.singh@amd.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Query max_sev_asid directly after setting it instead of bouncing through
its wrapper, svm_sev_enabled().  Using the wrapper is unnecessary
obfuscation.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/svm/sev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index a024edabaca5..3d25d24bcb48 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1272,8 +1272,7 @@ void __init sev_hardware_setup(void)
 
 	/* Maximum number of encrypted guests supported simultaneously */
 	max_sev_asid = ecx;
-
-	if (!svm_sev_enabled())
+	if (!max_sev_asid)
 		goto out;
 
 	/* Minimum ASID value that should be used for SEV guest */
-- 
2.30.0.284.gd98b1dd5eaa7-goog