From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4CAAC52D28 for ; Thu, 27 Feb 2020 14:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8444D24656 for ; Thu, 27 Feb 2020 14:04:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582812297; bh=tOmoxyHH7aI3s0hZrRZfclMTF0zSrdSwaBsKgAUc8u8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UXSxqeHWN2ZP8KaOZ3paKQy0Fir9MGwaK5yv1gD8Esz6uMAYCWhcW0qMzFvLyUbNc rcthTEur/VGWAKkUrI+CYHs6ezvwh+oRrg/vXTjdrLaBxIzpvTrgE8NI8Oue2s9gYl IGD2Bk6zEhGjw3nheAnelFCAngu8L2bXh7ttmKX8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387663AbgB0OE4 (ORCPT ); Thu, 27 Feb 2020 09:04:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:41106 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732821AbgB0OEl (ORCPT ); Thu, 27 Feb 2020 09:04:41 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5434021556; Thu, 27 Feb 2020 14:04:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582812280; bh=tOmoxyHH7aI3s0hZrRZfclMTF0zSrdSwaBsKgAUc8u8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q6Yg87aoYnnc2bJJ8Vuz7BxQjB8pB8REPprmutnhofo/W+13yPW4VvQn7sE2j9kWu k+AuLMNkQhrXnE7g8c3JIzK1QJ4EjnvutDcybq/qLjgGiOAmALaj1++6xNkoVpm9Hl AQfKy1aMAVguEh+bAhGzxHqWLxPq+qQ1LEmAs4/Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaohe Lin , Paolo Bonzini Subject: [PATCH 4.19 53/97] KVM: x86: dont notify userspace IOAPIC on edge-triggered interrupt EOI Date: Thu, 27 Feb 2020 14:37:01 +0100 Message-Id: <20200227132223.244590917@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200227132214.553656188@linuxfoundation.org> References: <20200227132214.553656188@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Miaohe Lin commit 7455a8327674e1a7c9a1f5dd1b0743ab6713f6d1 upstream. Commit 13db77347db1 ("KVM: x86: don't notify userspace IOAPIC on edge EOI") said, edge-triggered interrupts don't set a bit in TMR, which means that IOAPIC isn't notified on EOI. And var level indicates level-triggered interrupt. But commit 3159d36ad799 ("KVM: x86: use generic function for MSI parsing") replace var level with irq.level by mistake. Fix it by changing irq.level to irq.trig_mode. Cc: stable@vger.kernel.org Fixes: 3159d36ad799 ("KVM: x86: use generic function for MSI parsing") Signed-off-by: Miaohe Lin Signed-off-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/irq_comm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kvm/irq_comm.c +++ b/arch/x86/kvm/irq_comm.c @@ -427,7 +427,7 @@ void kvm_scan_ioapic_routes(struct kvm_v kvm_set_msi_irq(vcpu->kvm, entry, &irq); - if (irq.level && kvm_apic_match_dest(vcpu, NULL, 0, + if (irq.trig_mode && kvm_apic_match_dest(vcpu, NULL, 0, irq.dest_id, irq.dest_mode)) __set_bit(irq.vector, ioapic_handled_vectors); }