From patchwork Mon Feb 10 17:28:22 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: 11373817 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 842E814E3 for ; Mon, 10 Feb 2020 17:30:30 +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 612A820733 for ; Mon, 10 Feb 2020 17:30:30 +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="ElZzerSm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 612A820733 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 1j1Crd-0006Wo-Nn; Mon, 10 Feb 2020 17:28:53 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j1Crc-0006Wj-F7 for xen-devel@lists.xenproject.org; Mon, 10 Feb 2020 17:28:52 +0000 X-Inumbo-ID: cd772d62-4c2a-11ea-852a-bc764e2007e4 Received: from esa5.hc3370-68.iphmx.com (unknown [216.71.155.168]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id cd772d62-4c2a-11ea-852a-bc764e2007e4; Mon, 10 Feb 2020 17:28:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1581355731; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=hhR+V+OaGDNndGEWK0lGVMj7XjQx6MPrG0kWQRKYZ2I=; b=ElZzerSmpeDONwdPM41bzyRwhPKQFR+0/oF52QWnuCeGR26pXKR5KodI /uHaq3uiWuVgJrgff2A+IWxSSXZZm15sEm+MFmqwNDmGqYvu+KrcCIp7K BD8Yi5zkVO2KRHAzG2fYw9ILWROPc69ME/ELdY6EsJ/O2PyOR7JcZFmII o=; 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: seX99mzUSVz01UIA+5sVaTiNhcgAbaN6e6nDjBkk77n6ztpzhigbz1A4k7YGAJEccewvoMPDU9 epL4fKdrlhMmMYADsHAvWfXXWwY5NGod0l2h5nwMb14yGbsckv3fC0fR1zeb47p/CmJqkVi+68 8PqIsxufudbWutIpIrerl0GOPb2eIZrlhmcUM1Ay6fTym8KHb9GHvV3KB0tOQkCrRQv1WsMsBl ArQk1fe+NgVvBRntkzbryublVY0JzEQKqInxg03WN/bvovIOSSzNvxeLZODxNKWHs4RdMUyi79 /Us= X-SBRS: 2.7 X-MesageID: 12589322 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,425,1574139600"; d="scan'208";a="12589322" From: Roger Pau Monne To: Date: Mon, 10 Feb 2020 18:28:22 +0100 Message-ID: <20200210172829.43604-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v4 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). 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(-)