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 BEF63C55185 for ; Wed, 22 Apr 2020 17:53:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 97BAD20882 for ; Wed, 22 Apr 2020 17:53:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 97BAD20882 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55288 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRJYR-0003Ct-Ji for qemu-devel@archiver.kernel.org; Wed, 22 Apr 2020 13:52:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35592) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRJCC-00076R-2r for qemu-devel@nongnu.org; Wed, 22 Apr 2020 13:30:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jRJCB-0003K1-HL for qemu-devel@nongnu.org; Wed, 22 Apr 2020 13:29:59 -0400 Received: from mga12.intel.com ([192.55.52.136]:36972) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jRJCA-0003HZ-Sr for qemu-devel@nongnu.org; Wed, 22 Apr 2020 13:29:59 -0400 IronPort-SDR: l73XXTj78eNpHra02Y8R7oNf/gm7MNYFnMRfXYA2YzLyF63wCsOLThyHThIb7R54bo1HppC8PP lI8+9umNb82A== 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 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 Received-SPF: pass client-ip=192.55.52.136; envelope-from=jonathan.derrick@intel.com; helo=mga12.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/22 13:29:57 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Received-From: 192.55.52.136 X-Mailman-Approved-At: Wed, 22 Apr 2020 13:49:16 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, Lorenzo Pieralisi , Andrzej Jakowski , Jon Derrick , virtualization@lists.linux-foundation.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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