From patchwork Sat Oct 24 21:35:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 11855045 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 E72CCC2D0A3 for ; Sat, 24 Oct 2020 21:38:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ACB4222210 for ; Sat, 24 Oct 2020 21:38:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="MEjgRucK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764686AbgJXVfq (ORCPT ); Sat, 24 Oct 2020 17:35:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1764654AbgJXVfo (ORCPT ); Sat, 24 Oct 2020 17:35:44 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B2A9C0613D6; Sat, 24 Oct 2020 14:35:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=JIXIY3GAyntKqPeZa3MAlKhd1UW1TXMA9oFv8e4M/GQ=; b=MEjgRucK7MhV9F/E1x5IPQpfVf hVM9Zs7V1GvmQ9EL/yAHBVjgegMtvk+QzXrMHancjq/aqxzqNpSKYufarYG3zKWeUUUI6VD2XbhSu 5hTnEyezWLQU8rjS3CA0/AX4Y6yOCqBHGHnb6z271Ph13K0V05B9lIc0381J1Tnpf99/FR6OY0CwZ ydbQMeEJu7mzG9SI/gE0jldeW9aIm8LQx7aMALyjyIGEhNfAUZpZiBkTvsCfN334wBGUfBoG7BpP9 JvDgLYQTLHj0sCTLd5coQ81CSf/YodwhP7FGWG9yLvdGJ5PnwPk6Rznu8ExVCFFVLTTVDQSPrKXn2 suq6f54Q==; Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kWRCN-0006Gg-Vu; Sat, 24 Oct 2020 21:35:41 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.93 #3 (Red Hat Linux)) id 1kWRCN-001rPi-GD; Sat, 24 Oct 2020 22:35:39 +0100 From: David Woodhouse To: x86@kernel.org Cc: kvm , iommu@lists.linux-foundation.org, joro@8bytes.org, Thomas Gleixner , Paolo Bonzini , linux-kernel , linux-hyperv@vger.kernel.org, maz@misterjones.org, Dexuan Cui Subject: [PATCH v3 33/35] iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available Date: Sat, 24 Oct 2020 22:35:33 +0100 Message-Id: <20201024213535.443185-34-dwmw2@infradead.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201024213535.443185-1-dwmw2@infradead.org> References: <20201024213535.443185-1-dwmw2@infradead.org> MIME-Version: 1.0 Sender: David Woodhouse X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: David Woodhouse If the 15-bit APIC ID support is present in emulated MSI then there's no need for the pseudo-remapping support. Signed-off-by: David Woodhouse --- drivers/iommu/hyperv-iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c index a629a6be65c7..9438daa24fdb 100644 --- a/drivers/iommu/hyperv-iommu.c +++ b/drivers/iommu/hyperv-iommu.c @@ -121,6 +121,7 @@ static int __init hyperv_prepare_irq_remapping(void) int i; if (!hypervisor_is_type(X86_HYPER_MS_HYPERV) || + x86_init.hyper.msi_ext_dest_id() || !x2apic_supported()) return -ENODEV;