From patchwork Fri Apr 7 08:50:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 9669099 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 05644602A0 for ; Fri, 7 Apr 2017 08:51:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E81D7285B7 for ; Fri, 7 Apr 2017 08:51:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DD061285CB; Fri, 7 Apr 2017 08:51:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B5CB285B7 for ; Fri, 7 Apr 2017 08:51:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756162AbdDGIvr (ORCPT ); Fri, 7 Apr 2017 04:51:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34778 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756132AbdDGIvO (ORCPT ); Fri, 7 Apr 2017 04:51:14 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 55AEFC065878 for ; Fri, 7 Apr 2017 08:51:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 55AEFC065878 Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=david@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 55AEFC065878 Received: from t460s.redhat.com (ovpn-116-217.ams2.redhat.com [10.36.116.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1699C189CB; Fri, 7 Apr 2017 08:51:12 +0000 (UTC) From: David Hildenbrand To: kvm@vger.kernel.org Cc: Paolo Bonzini , rkrcmar@redhat.com, Peter Xu , david@redhat.com Subject: [PATCH v3 13/24] KVM: x86: KVM_IRQCHIP_PIC_MASTER only has 8 pins Date: Fri, 7 Apr 2017 10:50:30 +0200 Message-Id: <20170407085041.5257-14-david@redhat.com> In-Reply-To: <20170407085041.5257-1-david@redhat.com> References: <20170407085041.5257-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 07 Apr 2017 08:51:14 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently, one could set pin 8-15, implicitly referring to KVM_IRQCHIP_PIC_SLAVE. Get rid of the two local variables max_pin and delta on the way. Signed-off-by: David Hildenbrand --- arch/x86/kvm/irq_comm.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c index d82fc14..fb1e37e 100644 --- a/arch/x86/kvm/irq_comm.c +++ b/arch/x86/kvm/irq_comm.c @@ -279,8 +279,6 @@ int kvm_set_routing_entry(struct kvm *kvm, const struct kvm_irq_routing_entry *ue) { int r = -EINVAL; - int delta; - unsigned max_pin; /* also allow creation of routes during KVM_IRQCHIP_INIT_IN_PROGRESS */ if (kvm->arch.irqchip_mode == KVM_IRQCHIP_NONE) @@ -292,26 +290,25 @@ int kvm_set_routing_entry(struct kvm *kvm, case KVM_IRQ_ROUTING_IRQCHIP: if (irqchip_split(kvm)) goto out; - delta = 0; + e->irqchip.pin = ue->u.irqchip.pin; switch (ue->u.irqchip.irqchip) { case KVM_IRQCHIP_PIC_SLAVE: - delta = 8; + e->irqchip.pin += PIC_NUM_PINS / 2; /* fall through */ case KVM_IRQCHIP_PIC_MASTER: + if (ue->u.irqchip.pin >= PIC_NUM_PINS / 2) + goto out; e->set = kvm_set_pic_irq; - max_pin = PIC_NUM_PINS; break; case KVM_IRQCHIP_IOAPIC: - max_pin = KVM_IOAPIC_NUM_PINS; + if (ue->u.irqchip.pin >= KVM_IOAPIC_NUM_PINS) + goto out; e->set = kvm_set_ioapic_irq; break; default: goto out; } e->irqchip.irqchip = ue->u.irqchip.irqchip; - e->irqchip.pin = ue->u.irqchip.pin + delta; - if (e->irqchip.pin >= max_pin) - goto out; break; case KVM_IRQ_ROUTING_MSI: e->set = kvm_set_msi;