From patchwork Mon Jan 27 18:11:08 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: 11353067 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 56FE892A for ; Mon, 27 Jan 2020 18:12:49 +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 32DD52087F for ; Mon, 27 Jan 2020 18:12:49 +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="H/D3c0Ea" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32DD52087F 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 1iw8r9-0007qR-QA; Mon, 27 Jan 2020 18:11:27 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iw8r8-0007qJ-4M for xen-devel@lists.xenproject.org; Mon, 27 Jan 2020 18:11:26 +0000 X-Inumbo-ID: 6e160154-4130-11ea-aafc-bc764e2007e4 Received: from esa5.hc3370-68.iphmx.com (unknown [216.71.155.168]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 6e160154-4130-11ea-aafc-bc764e2007e4; Mon, 27 Jan 2020 18:11:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1580148685; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=MFGFeJZY1ZM/WoB02goIPzvIhXiz2uLiYytQLUtKveA=; b=H/D3c0EabTY6GLQL9px5FPyQOvnBUQamrFq+00TQbyObdgjL0NkISbiH tL5zQrH/ndQ6ngrL2AoKRMA7K5psufF9hfxQCzS15y6Tf84BJ1iW4LKIW Z/AW12EuAfbaiECsylkGF8RM5/WQkQO50ZshRibKEYcqZnAPbLV+fxIow Q=; Authentication-Results: esa5.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 (esa5.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=esa5.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa5.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=esa5.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 (esa5.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=esa5.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: 5J5Yf5VrJ9mVhS9HZzstc7woA0Y0WrtEckZC4vn5EM6vwildFVYKQ96lXt8T6Zc9T4rxMmCUtM NTU8UHKgmR8he3gR3DdZpEkk7ZlF/p/z4CnhTBtC83/YjGXSMZ/HDnyOjZBTHEGlqehe3CIUlh 8RFpUZ0T4hc6Gr7/P/4o/VusokUaOTt4L6QyN1sKLEGOML0diR/+QX+A7lqQescbjAfLNeleeo CCm1POWkY5yn7dmBXDBKYAkE48bHgSOX9SdBK8H364gXYfPePtDkA3unbsCJzNgy54Pd3hTKQ8 POc= X-SBRS: 2.7 X-MesageID: 11876067 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,370,1574139600"; d="scan'208";a="11876067" From: Roger Pau Monne To: Date: Mon, 27 Jan 2020 19:11:08 +0100 Message-ID: <20200127181115.82709-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v3 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 , Tim Deegan , 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). Thanks, Roger. Roger Pau Monne (7): x86/tlb: fix NEED_FLUSH return type 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 x86/tlb: use Xen L0 assisted TLB flush when available xen/arch/x86/flushtlb.c | 24 ++++++--- xen/arch/x86/guest/hypervisor.c | 10 ++++ xen/arch/x86/guest/xen/xen.c | 6 +++ xen/arch/x86/hvm/asid.c | 6 +-- xen/arch/x86/hvm/hvm.c | 51 ++---------------- xen/arch/x86/mm/hap/hap.c | 48 +++++++++++++++++ xen/arch/x86/mm/shadow/common.c | 71 +++++++++++++++++++++++--- xen/arch/x86/mm/shadow/hvm.c | 2 +- xen/arch/x86/mm/shadow/multi.c | 17 +++--- xen/arch/x86/smp.c | 11 ++++ xen/include/asm-x86/flushtlb.h | 21 +++++++- xen/include/asm-x86/guest/hypervisor.h | 17 ++++++ xen/include/asm-x86/hap.h | 3 ++ xen/include/asm-x86/shadow.h | 12 +++++ 14 files changed, 220 insertions(+), 79 deletions(-)