From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yves-Alexis Perez Subject: Re: [PATCH v7 0/5] Add Intel IOMMU debugfs support Date: Thu, 22 Feb 2018 08:48:37 +0100 Message-ID: <1519285717.2388.11.camel@debian.org> 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> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1636436823757048057==" Return-path: In-Reply-To: <20180220142512.039309aa@jacob-builder> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Jacob Pan Cc: Ravi V Shankar , "Raj, Ashok" , Fenghua Yu , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andy Shevchenko , David Woodhouse , Gayatri Kammela List-Id: iommu@lists.linux-foundation.org --===============1636436823757048057== Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-iIS2QBEqX5miAuDNO4vV" --=-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-- --===============1636436823757048057== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============1636436823757048057==--