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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 5E535C54FCB for ; Wed, 22 Apr 2020 17:29:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4255B20706 for ; Wed, 22 Apr 2020 17:29:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726057AbgDVR36 (ORCPT ); Wed, 22 Apr 2020 13:29:58 -0400 Received: from mga12.intel.com ([192.55.52.136]:36971 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726006AbgDVR36 (ORCPT ); Wed, 22 Apr 2020 13:29:58 -0400 IronPort-SDR: HPWFAsKBWTXFPFmoPOG69kwBs5KSlCusEXTomly41NWABoEAid7IPiEsplOmfCx2kboBSX8cRj NCT3RdIC/e5A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2020 10:29:56 -0700 IronPort-SDR: EiEq+kTDM6tei4m+yriecOUR7/nl9gUyjwZa8YQ1eFsTnL1I1Aba9k3y0wferZufB6GAqnyARO kY7Gz/RrR2xQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,304,1583222400"; d="scan'208";a="402622629" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.116.40]) by orsmga004.jf.intel.com with ESMTP; 22 Apr 2020 10:29:56 -0700 From: Jon Derrick To: Bjorn Helgaas , qemu-devel@nongnu.org Cc: Lorenzo Pieralisi , , virtualization@lists.linux-foundation.org, Andrzej Jakowski , Jon Derrick Subject: [PATCH 0/1] KVM support for VMD devices Date: Wed, 22 Apr 2020 13:14:44 -0400 Message-Id: <20200422171444.10992-1-jonathan.derrick@intel.com> X-Mailer: git-send-email 2.18.1 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The two patches (Linux & QEMU) add support for passthrough VMD devices in QEMU/KVM. VMD device 28C0 already supports passthrough natively by providing the Host Physical Address in a shadow register to the guest for correct bridge programming. The QEMU patch emulates the 28C0 mode by creating a shadow register and advertising its support by using QEMU's subsystem vendor/id. The Linux patch matches the QEMU subsystem vendor/id to use the shadow register. Jon Derrick (1): pci: vmd: Use Shadow MEMBAR registers for QEMU/KVM guests drivers/pci/controller/vmd.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) -- 2.18.1