From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by spool.mail.gandi.net (Postfix) with ESMTPS id 402FC740034 for ; Mon, 28 Aug 2023 11:13:37 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=2gmMH420UGSdZ+EBfWjfzB0g1ModUTfcS6qksMZXCnM=; c=relaxed/simple; d=groups.io; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject:To:Cc:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Type; s=20140610; t=1693221215; v=1; b=ErT+9TkVNQNkd3Be1sucj2dNzZxi+1GqG6vdyJA1if58gB/479IRWQGryfeLaYqhqsifG2VN rKzJUp0nDoXtBBEBuHtdX/Kkpie81ghZQGWrxdiDFgkb2mxr8EtkRQDHVNiSlz7YGNwyTj+sFcC KkZlbgAFeU9NxvNQRF4M7OhI= X-Received: by 127.0.0.2 with SMTP id XI07YY7687511xU79vE9w3TG; Mon, 28 Aug 2023 04:13:35 -0700 X-Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by mx.groups.io with SMTP id smtpd.web11.10821.1693221215196190968 for ; Mon, 28 Aug 2023 04:13:35 -0700 X-Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A3F00640C6 for ; Mon, 28 Aug 2023 11:13:34 +0000 (UTC) X-Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18ADDC433C9 for ; Mon, 28 Aug 2023 11:13:34 +0000 (UTC) X-Received: by mail-lj1-f177.google.com with SMTP id 38308e7fff4ca-2bce552508fso46520101fa.1 for ; Mon, 28 Aug 2023 04:13:33 -0700 (PDT) X-Gm-Message-State: YRBj6dVrrLdhSFD69VWPVshLx7686176AA= X-Google-Smtp-Source: AGHT+IF/yeJKFxPpdM0JV4N1amG5PR0wB2Ky4Qmjcbe1BOdDKC1sBWjohdGm2kFj6nHeJnNs8MxlPhZ7HA85viW7v/E= X-Received: by 2002:a2e:9007:0:b0:2b9:e701:ac48 with SMTP id h7-20020a2e9007000000b002b9e701ac48mr21319986ljg.32.1693221212131; Mon, 28 Aug 2023 04:13:32 -0700 (PDT) MIME-Version: 1.0 References: <20230720134557.3903923-1-ardb@kernel.org> <4bd53ehby2cto5n2venjfkucot5ayj2xtsl7z6diegh6llrpm2@tj5oh6txxjck> In-Reply-To: <4bd53ehby2cto5n2venjfkucot5ayj2xtsl7z6diegh6llrpm2@tj5oh6txxjck> From: "Ard Biesheuvel" Date: Mon, 28 Aug 2023 13:13:20 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [edk2-devel] [RFC/RFT PATCH] OvmfPkg/IoMmuDxe: don't rely on TPLs for re-entrancy To: devel@edk2.groups.io, kraxel@redhat.com Cc: Pedro Falcato , Jiewen Yao , Michael Brown , Tom Lendacky , Michael Roth Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,ardb@kernel.org List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: Content-Type: text/plain; charset="UTF-8" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=ErT+9TkV; dmarc=fail reason="SPF not aligned (relaxed), DKIM not aligned (relaxed)" header.from=kernel.org (policy=none); spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io On Mon, 28 Aug 2023 at 11:16, Gerd Hoffmann wrote: > > Hi, > > > I have tried the patch below, and I don't see any slowdowns with or > > without the patch, running both DEBUG and RELEASE builds under > > ordinary KVM/nested-virt. Note that the change in the first hunk will > > cause the ASSERT()s removed in the other hunks to trigger so the code > > is definitely being exercised. > > QE team tested again with fresh builds, the slowdown isn't there any > more. Not fully clear where it came from, but most likely not from > this patch. > > Only 20 successful test runs so far, which a good start, but with > a reproduce rate below 20% not that much. I'll post an update > when it I get more results. > Excellent, thanks for the update. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#108057): https://edk2.groups.io/g/devel/message/108057 Mute This Topic: https://groups.io/mt/100256049/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-