From patchwork Tue Dec 24 13:26:14 2019 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: 11309339 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 9853A15AB for ; Tue, 24 Dec 2019 13:28:02 +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 751FD20643 for ; Tue, 24 Dec 2019 13:28:02 +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="b2NZkyXp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 751FD20643 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 1ijkCy-0007bo-G7; Tue, 24 Dec 2019 13:26:44 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1ijkCx-0007bj-Ft for xen-devel@lists.xenproject.org; Tue, 24 Dec 2019 13:26:43 +0000 X-Inumbo-ID: 00e1b65e-2651-11ea-b6f1-bc764e2007e4 Received: from esa4.hc3370-68.iphmx.com (unknown [216.71.155.144]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 00e1b65e-2651-11ea-b6f1-bc764e2007e4; Tue, 24 Dec 2019 13:26:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1577193994; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=tkK1Ebbcqa1hzaDWkUWDGvMZZ0GuD2YZz2FcrKd64TU=; b=b2NZkyXpjDVJ2LVvDbnwqi1jfFsUh0uwEXWxqQczWjPTXPUCnvcsjLsq wDH9BxKTfoDLVQR62xJZdCQ1bUqtKSsphWzAR9bNjlARhqOf51+0oHSxa 2iCFot5O2xkGsVh0c+9LFz4pUtjPljy3+ocQOZczE8dZ3kedwpxOxb9+i 8=; Authentication-Results: esa4.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 (esa4.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=esa4.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa4.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=esa4.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 (esa4.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=esa4.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: i9Mos5eXf20f4PkgUNgnNnxsIPgjZI/23UwFh9kdGhezvxnnJia8PpCeeFdlBTkGSgWx+ZFX/l taLpH0jOm+AmkUEYbirjPZ3ezERun2vlmXjzauXnU9f4QFwRfW2N7ZTO0EoASPFSCAuuYm9Nz6 Ic1zGEDjYtU2P6iajB0MCOBlfhChdSTWJ8lPtnM9kRnnoRPBAKRc+gIs1CSQGSsnW5v/lM1eNU Q8N62Clw9j8wJV8JztREigQwefvytW2ggzBTIWM33md46Gg04sQCberMhd3Q4ldEQw/3kmZaXr TcY= X-SBRS: 2.7 X-MesageID: 10698882 X-Ironport-Server: esa4.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.69,351,1571716800"; d="scan'208";a="10698882" From: Roger Pau Monne To: Date: Tue, 24 Dec 2019 14:26:14 +0100 Message-ID: <20191224132616.47441-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 0/2] 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: Andrew Cooper , Wei Liu , 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. See patch #2 for a comparison on the performance of the L0 assisted flush vs using x2APIC shorthand. Thanks, Roger. Roger Pau Monne (2): x86/hvm: improve performance of HVMOP_flush_tlbs x86/tlb: use Xen L0 assisted TLB flush when available xen/arch/x86/guest/xen/xen.c | 11 +++++++ xen/arch/x86/hvm/hvm.c | 55 ++++++++++++++++++++++----------- xen/arch/x86/smp.c | 6 ++++ xen/include/asm-x86/guest/xen.h | 7 +++++ 4 files changed, 61 insertions(+), 18 deletions(-)