From patchwork Tue Mar 3 17:20:40 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: 11418551 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 E4BE192A for ; Tue, 3 Mar 2020 17:22:13 +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 C1CB320863 for ; Tue, 3 Mar 2020 17:22:13 +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="ejk1IitS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C1CB320863 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 1j9BEB-0007Q5-DB; Tue, 03 Mar 2020 17:21:07 +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 1j9BE9-0007Pu-QR for xen-devel@lists.xenproject.org; Tue, 03 Mar 2020 17:21:05 +0000 X-Inumbo-ID: 5bff284d-5d73-11ea-a1d1-12813bfff9fa Received: from esa2.hc3370-68.iphmx.com (unknown [216.71.145.153]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 5bff284d-5d73-11ea-a1d1-12813bfff9fa; Tue, 03 Mar 2020 17:21:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1583256064; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=hgehW7pdoO+PQgde3bE5c4X784+ZWJe3Ly61wUKLYwk=; b=ejk1IitSkpqbIYDVgxULRQOPUiWrSQ6xfiNy02eas3DNIokr5ZijpYyz KNSix7XJrelUJ3vFXvlCnUp0YMo3rvGHJGOSOCHdwuCnWeICphr7X6FgB XmF/zB1TtoTBNR80oI/jhaiPhwJ0QIIHbE56hSM6kf+xCuuBJKJkP7h7c w=; Authentication-Results: esa2.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 (esa2.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=esa2.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="roger.pau@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa2.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=esa2.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 (esa2.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=esa2.hc3370-68.iphmx.com; envelope-from="roger.pau@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: LBDJ2/MNGqI/p7cha3O5ULmg5Gkjpyj0dz4V2eqwBE+8vmKHdv0SO5bo/l+2GDUbWh+Jkng1dW Dvx+0NXcNexvVOTx4C/sCpGJdgEfcnvvtnVkYFRLMcVgKYV0XmQxhP1QnLypdqIDBxVaxnPd37 xr0hfQAJ4joUSnMBjAz4VQKr8hX7vXb6noaNWTGSY3UePjRHl+NPsmWGH6KPs9XzX1XdxmqEno TvH9dnvE/SdNmOlwX3QWHFUbMls1Cl2p5NW3ZscZJEiILRDh5bn6vIj1GFntt+qvETlNo7wa2u Lu4= X-SBRS: 2.7 X-MesageID: 13353941 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,511,1574139600"; d="scan'208";a="13353941" From: Roger Pau Monne To: Date: Tue, 3 Mar 2020 18:20:40 +0100 Message-ID: <20200303172046.50569-1-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v6 0/6] 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 , Andrew Cooper , Paul Durrant , Tim Deegan , George Dunlap , 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 (6): 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 | 14 +++++ xen/arch/x86/guest/xen/xen.c | 6 +++ xen/arch/x86/hvm/asid.c | 6 +-- xen/arch/x86/hvm/hvm.c | 56 +------------------- xen/arch/x86/hvm/viridian/viridian.c | 2 +- xen/arch/x86/mm/hap/hap.c | 50 ++++++++++++++++++ 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/mm/shadow/private.h | 4 ++ xen/arch/x86/smp.c | 7 +++ xen/include/asm-x86/flushtlb.h | 23 ++++++++- xen/include/asm-x86/guest/hypervisor.h | 17 ++++++ xen/include/asm-x86/hvm/hvm.h | 3 -- xen/include/asm-x86/paging.h | 10 ++++ 16 files changed, 224 insertions(+), 88 deletions(-)