From patchwork Tue Oct 25 12:47:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxim Levitsky X-Patchwork-Id: 619071 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65F0AECDFA1 for ; Tue, 25 Oct 2022 12:53:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232659AbiJYMw4 (ORCPT ); Tue, 25 Oct 2022 08:52:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232568AbiJYMwB (ORCPT ); Tue, 25 Oct 2022 08:52:01 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BFCF1A814 for ; Tue, 25 Oct 2022 05:49:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1666702150; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Q+1s9h3gEv1S6uJtv7PL4VW+8QSNXjE3A0b7aRagl+M=; b=AHinVa60tc01mdEJsqsIVuYMKEtv1rmpkS9dBGF9GyMERaxJwb2AhEkNjvaXdkLGaAf3eQ 0kZEAGh15K1ls5RGGjb0X0OuHfYJbd7q+BoY9juS72FgUVvv8Y1ZJXRWoTiz7fNtvHRbNT mTeRQRAOt9APRp2IbkRoXBD5fiBe9l4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-479-R8gnGJrrPy219Cul13UP2A-1; Tue, 25 Oct 2022 08:49:06 -0400 X-MC-Unique: R8gnGJrrPy219Cul13UP2A-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1E581857AB6; Tue, 25 Oct 2022 12:49:05 +0000 (UTC) Received: from amdlaptop.tlv.redhat.com (dhcp-4-238.tlv.redhat.com [10.35.4.238]) by smtp.corp.redhat.com (Postfix) with ESMTP id BF2AC40C6EC6; Tue, 25 Oct 2022 12:49:01 +0000 (UTC) From: Maxim Levitsky To: kvm@vger.kernel.org Cc: Thomas Gleixner , Yang Zhong , x86@kernel.org, Jim Mattson , Vitaly Kuznetsov , Paolo Bonzini , Sean Christopherson , Wanpeng Li , Shuah Khan , Guang Zeng , Joerg Roedel , Maxim Levitsky , linux-kernel@vger.kernel.org, Dave Hansen , Ingo Molnar , linux-kselftest@vger.kernel.org, Kees Cook , "H. Peter Anvin" , Wei Wang , Borislav Petkov Subject: [PATCH RESEND v4 20/23] KVM: svm: drop explicit return value of kvm_vcpu_map Date: Tue, 25 Oct 2022 15:47:38 +0300 Message-Id: <20221025124741.228045-21-mlevitsk@redhat.com> In-Reply-To: <20221025124741.228045-1-mlevitsk@redhat.com> References: <20221025124741.228045-1-mlevitsk@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org if kvm_vcpu_map returns non zero value, error path should be triggered regardless of the exact returned error value. Suggested-by: Sean Christopherson Signed-off-by: Maxim Levitsky --- arch/x86/kvm/svm/svm.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 4cbb95796dcd63..b49e3f5c921c99 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4472,8 +4472,7 @@ static int svm_enter_smm(struct kvm_vcpu *vcpu, union kvm_smram *smram) * that, see svm_prepare_switch_to_guest()) which must be * preserved. */ - if (kvm_vcpu_map(vcpu, gpa_to_gfn(svm->nested.hsave_msr), - &map_save) == -EINVAL) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(svm->nested.hsave_msr), &map_save)) return 1; BUILD_BUG_ON(offsetof(struct vmcb, save) != 0x400); @@ -4510,11 +4509,11 @@ static int svm_leave_smm(struct kvm_vcpu *vcpu, const union kvm_smram *smram) return 1; vmcb12_gpa = GET_SMSTATE(u64, smstate, 0x7ee0); - if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcb12_gpa), &map) == -EINVAL) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcb12_gpa), &map)) return 1; ret = 1; - if (kvm_vcpu_map(vcpu, gpa_to_gfn(svm->nested.hsave_msr), &map_save) == -EINVAL) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(svm->nested.hsave_msr), &map_save)) goto unmap_map; if (svm_allocate_nested(svm))