From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7F9C618C90A; Mon, 7 Oct 2024 23:49:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728344966; cv=none; b=iUmiKth0MpXeLmm78ePXWOMmSs2qW7fdfPC1cnW2jaMUf3mCIhdcLjoOO/Wl1xhV79A6SYHkXtDiYPIK58/m9i3Jl2sgayWN8CcB9Q38pxyOVDz07MTblS2CTo66AxAjDmoOkLPgYhMWfqkVpnGEt2EOFfqreEtCmEmVC0Vg3mc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728344966; c=relaxed/simple; bh=RQea1xOvcFlUuQShOAEXZCqknMqD2qPxnzXHUX7psZA=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=bsx5NO3j3nO48/sb64LaAa34zBUU+m6gw8ivql67N//51tOytLcUMo73T51mCKWv/jaYuSIMO17pIqQOWh1tOjtC2CD3aCt4zaudDr++STAL0c4Iww0TEcNMMIpV8L/7HYD8AllUNxmicf+MD32nzzkX49E3eP+d6MjKOG101zA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FxPc4Ui/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FxPc4Ui/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 998EEC4CEC6; Mon, 7 Oct 2024 23:49:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728344966; bh=RQea1xOvcFlUuQShOAEXZCqknMqD2qPxnzXHUX7psZA=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=FxPc4Ui/40o6dhkE3q8Sdqgg0wQNpWL5VJIWGcLCPbY4ZebrArJ3mRBNS+4C3oRMy pktEzgQO4r5UHujz0s4kXlA9pRI9I3D/B1MhhS1NTKohJ1ZcJk6ePeNyiMWb73I9i5 ElSsv5d/O5xRdJWFGnWV0zJqvdXvyBo0evQC04uFZ6taAhFOdjg5PNjPxM26IWGh+8 vRUk4/LfAhXZf7RsvdBvAJIVh9AJmwzbzqkNoGX6sxltkIXKo5aazAVCdAii1bslMi 55aXoeS73u2bTam+0Cy6gP0kAFM6LznuZZCkZrKUHxGzZHyTNmr9+wlO269ITl4vVI Kz2tAzcoFDKWg== Message-ID: Subject: Re: [PATCH v5 0/5] Lazy flush for the auth session From: Jarkko Sakkinen To: Stefan Berger , linux-integrity@vger.kernel.org Cc: James.Bottomley@HansenPartnership.com, roberto.sassu@huawei.com, mapengyu@gmail.com, Mimi Zohar , David Howells , Paul Moore , James Morris , "Serge E. Hallyn" , Peter Huewe , Jason Gunthorpe , keyrings@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Date: Tue, 08 Oct 2024 02:49:21 +0300 In-Reply-To: <7f05ff8e-6103-4ad7-8a32-9ff5643b8a41@linux.ibm.com> References: <20240921120811.1264985-1-jarkko@kernel.org> <7f05ff8e-6103-4ad7-8a32-9ff5643b8a41@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 (3.52.4-1.fc40) Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2024-10-03 at 11:14 -0400, Stefan Berger wrote: >=20 >=20 > On 9/21/24 8:08 AM, Jarkko Sakkinen wrote: > > This patch set aims to fix: > > https://bugzilla.kernel.org/show_bug.cgi?id=3D219229. > >=20 > > The baseline for the series is the v6.11 tag. >=20 > I was testing this with 6.12-rc1 on ppc64/kvm + vtpm boot time from=20 > pressing return on grub until login prompt appears while using an IMA > measure policy: >=20 > with HMAC2: 36s > with HMAC2+this series: 29s > without HMAC2: 28s >=20 > Looks good to me, though using a hardware TPM would probably be more=20 > critical in this type of measurement. Yep, exactly. QEMU fails here... BR, Jarkko