From patchwork Wed Feb 19 17:43:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Roger_Pau_Monn=C3=A9?= X-Patchwork-Id: 11392139 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DCA7692A for ; Wed, 19 Feb 2020 17:45:35 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 B88E92465D for ; Wed, 19 Feb 2020 17:45:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="JVq8PGZz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B88E92465D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j4TOR-0001lD-28; Wed, 19 Feb 2020 17:44:15 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j4TOP-0001l8-Ex for xen-devel@lists.xenproject.org; Wed, 19 Feb 2020 17:44:13 +0000 X-Inumbo-ID: 70492f53-533f-11ea-83f8-12813bfff9fa Received: from esa3.hc3370-68.iphmx.com (unknown [216.71.145.155]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 70492f53-533f-11ea-83f8-12813bfff9fa; Wed, 19 Feb 2020 17:44:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1582134253; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=XFuw4V3DV7KmNKDN4acKnRUBAbUktxJuJM/lwTBWALA=; b=JVq8PGZzx+q6fecib84x4fuNwQlfUUbOddUslyPbpv5wY+wlqLfo71N8 ODkt/fNhfsWidMaIlQmn+OSoV5EuFhKufzgjZnFk2o3okBDZqPLe79Bn+ E9n2P7t4fuZx53k9k5XyrbErleogLbwvKx2RkMOST/GiZL4QT7qniaZo/ w=; Authentication-Results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=roger.pau@citrix.com; spf=Pass smtp.mailfrom=roger.pau@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa3.hc3370-68.iphmx.com: no sender authenticity information available from domain of roger.pau@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa3.hc3370-68.iphmx.com: domain of roger.pau@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa3.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa3.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: IRkK2lTZ6YaTHX+fmMUhd/+l8BjWFITEZp/wBhKNkpbg57VTPsby9fqMNIUsvRHwV+0+y0Q6bF Z8aCSZpEB87xj4S1c58EW8m2ln9bORhgLGeQLdQ2OhVzN6kumk0V+F7Mad1f39Z1UD8fezEU5w YVCZlPURGDVGZBxGw82nAkfYd6eMDTa9YTPx9TjGGqpgNICw+Q73lbqao1Oc0ascVJ8kiVLAWZ XrNcoMYZ6Qk+FuUr4IhLF0bIrwEMA6XyNT4EglhhoyYcQ4fQLn9c46j9S2npW3s5QuhbhPCtpJ Z9g= X-SBRS: 2.7 X-MesageID: 12689418 X-Ironport-Server: esa3.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,461,1574139600"; d="scan'208";a="12689418" From: Roger Pau Monne To: Date: Wed, 19 Feb 2020 18:43:47 +0100 Message-ID: <20200219174354.84726-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v5 0/7] x86: improve assisted tlb flush and use it in guest mode X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Wei Liu , George Dunlap , Andrew Cooper , Paul Durrant , Tim Deegan , Jan Beulich , Roger Pau Monne Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Hello, The following series aims to improve the TLB flush times when running nested Xen, and it's specially beneficial when running in shim mode. Only the HAP guest TLB flush is improved, the shadow paging TLB flush is left as-is, and can be improved later if there's interest. For a reference on the performance improvement see patch #7, as it's a huge increase which can benefit other guests using assisted TLB flushes, and also the ones using the viridian TLB flush assist (ie: Windows). All patches have at least one Reviewed-by or Acked-by tag, the only code change vs v4 is a fix to extract the order from the flags field in patch #7. Thanks, Roger. Roger Pau Monne (7): x86/hvm: allow ASID flush when v != current x86/paging: add TLB flush hooks x86/hap: improve hypervisor assisted guest TLB flush x86/tlb: introduce a flush guests TLB flag x86/tlb: allow disabling the TLB clock xen/guest: prepare hypervisor ops to use alternative calls x86/tlb: use Xen L0 assisted TLB flush when available xen/arch/x86/flushtlb.c | 24 ++++++--- xen/arch/x86/guest/hyperv/hyperv.c | 2 +- xen/arch/x86/guest/hypervisor.c | 51 ++++++++++-------- xen/arch/x86/guest/xen/xen.c | 8 ++- xen/arch/x86/hvm/asid.c | 6 +-- xen/arch/x86/hvm/hvm.c | 51 ++---------------- xen/arch/x86/mm/hap/hap.c | 52 +++++++++++++++++++ xen/arch/x86/mm/shadow/common.c | 71 +++++++++++++++++++++++--- xen/arch/x86/mm/shadow/hvm.c | 2 +- xen/arch/x86/mm/shadow/multi.c | 16 +++--- xen/arch/x86/smp.c | 11 ++++ xen/include/asm-x86/flushtlb.h | 19 ++++++- xen/include/asm-x86/guest/hypervisor.h | 17 ++++++ xen/include/asm-x86/hap.h | 3 ++ xen/include/asm-x86/shadow.h | 12 +++++ 15 files changed, 246 insertions(+), 99 deletions(-)