From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753055AbeBVHsp (ORCPT ); Thu, 22 Feb 2018 02:48:45 -0500 Received: from pic75-3-78-194-244-226.fbxo.proxad.net ([78.194.244.226]:60344 "EHLO mail.corsac.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753000AbeBVHsn (ORCPT ); Thu, 22 Feb 2018 02:48:43 -0500 Message-ID: <1519285717.2388.11.camel@debian.org> Subject: Re: [PATCH v7 0/5] Add Intel IOMMU debugfs support From: Yves-Alexis Perez To: Jacob Pan Cc: "Raj, Ashok" , Joerg Roedel , Sohil Mehta , Alex Williamson , David Woodhouse , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Gayatri Kammela , Ravi V Shankar , Andy Shevchenko , Lu Baolu , Fenghua Yu Date: Thu, 22 Feb 2018 08:48:37 +0100 In-Reply-To: <20180220142512.039309aa@jacob-builder> References: <1517619001-148586-1-git-send-email-sohil.mehta@intel.com> <20180213140303.42mbzfxpypljy37l@8bytes.org> <20180213214002.GA27066@otc-nc-03> <1518992132.2542.5.camel@debian.org> <20180220142512.039309aa@jacob-builder> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-iIS2QBEqX5miAuDNO4vV" X-Mailer: Evolution 3.26.5-1 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-iIS2QBEqX5miAuDNO4vV Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2018-02-20 at 14:25 -0800, Jacob Pan wrote: > I didn't know about chipsec but reading the code seems to rely on an > out-of-tree kernel module. I don't think it matches what we need here. Yes good indeed, I had forgot about that. Maybe the userland part is still useful, but there's definitely a need for (protected) access to privileged memory (and access to /dev/mem is less practical than debugfs, I guess). Regards, --=20 Yves-Alexis --=-iIS2QBEqX5miAuDNO4vV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAlqOddUACgkQ3rYcyPpX RFsBGwgA2j4wld43w9fzKFS9Tr/cBIhJ6u1Ap9yovmGTUEz4nWJeY6QL108CjrmF aW4JfkMKoLNgq/7sGTQqD2K28H/XUJ0PVmXFpqR8iLdVLmpvEJpbWL4zBQSurrOQ Buwi90VRCRqzLgO/30ohfSlQoIbk5cl5NqMWzSG8x4zYxffG0T2cpJFub6a9L2PI NnF8bqjyqdwS1gZQkj47Y9KVSEq+85KsYDXXJE8mUAA2fd6eg77wZF5QBxQkeEcL jXP2pBldjPFpkG1pCexL3nFG3AjVMfvSM6Kj9GmcUKfDFZiX6af3N0e0xePoa/pE 34OoObjheDonqbP+GyAeDsFnAgIxxw== =SpJn -----END PGP SIGNATURE----- --=-iIS2QBEqX5miAuDNO4vV--