From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39613) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UjxBK-0008Vt-DC for qemu-devel@nongnu.org; Tue, 04 Jun 2013 15:46:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UjxBD-0000Wz-Dz for qemu-devel@nongnu.org; Tue, 04 Jun 2013 15:46:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:27272) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UjxBD-0000Wt-4O for qemu-devel@nongnu.org; Tue, 04 Jun 2013 15:46:03 -0400 Message-ID: <51AE43EE.3000503@redhat.com> Date: Tue, 04 Jun 2013 13:45:50 -0600 From: Eric Blake MIME-Version: 1.0 References: <1370369921-14925-1-git-send-email-coreyb@linux.vnet.ibm.com> <51AE3EC3.70908@redhat.com> <51AE417C.9030300@linux.vnet.ibm.com> In-Reply-To: <51AE417C.9030300@linux.vnet.ibm.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="----enig2BRIASGMJXGOQWMSNRGWB" Subject: Re: [Qemu-devel] [PATCH 0/2] TPM NVRAM persistent storage List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Corey Bryant Cc: kwolf@redhat.com, aliguori@us.ibm.com, stefanb@linux.vnet.ibm.com, qemu-devel@nongnu.org, mdroth@linux.vnet.ibm.com, jschopp@linux.vnet.ibm.com, stefanha@redhat.com This is an OpenPGP/MIME signed message (RFC 4880 and 3156) ------enig2BRIASGMJXGOQWMSNRGWB Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 06/04/2013 01:35 PM, Corey Bryant wrote: >=20 >=20 > On 06/04/2013 03:23 PM, Eric Blake wrote: >> On 06/04/2013 12:18 PM, Corey Bryant wrote: >>> This patch series provides persistent storage support that a TPM >> can use to store NVRAM data. It uses QEMU's block driver to store >>> data on a drive image. The libtpms TPM 1.2 backend will be the >>> initial user of this functionality to store data that must persist >>> through a reboot or migration. A sample command line may look like >>> this: >>> >>> qemu-system-x86_64 ... >>> -drive file=3D/path/to/nvram.qcow2,id=3Ddrive-nvram0-0-0 >>> -tpmdev libtpms,id=3Dtpm-tpm0 >>> -device tpm-tis,tpmdev=3Dtpm-tpm0,id=3Dtpm0,drive=3Ddrive-nvram0-0-0 >> >> Is a TPM device hot-pluggable? If so, do you have a design for the QM= P >> counterpart in mind? >> >=20 > Well the TPM is not hot-pluggable. And the feedback we've been getting= > is to simplify this support so I'm not sure it's needed/wanted. (?) Fair enough - just making sure we aren't forgetting something where it makes sense, but I agree with your point that for TPM, hot-plug does NOT make sense :) --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org ------enig2BRIASGMJXGOQWMSNRGWB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJRrkPuAAoJEKeha0olJ0Nqo1MH/1ZzJzQr8mQAFqEPvqa4mDd0 NOLSjagSiFxWP4AylD33Pj6OTCoPiAh6pCKT5NQZFpeUaTJzRT8C5oU5b6NvLhUb V3riks6WzHvio8ZgihWTrZ8VTyQ9B+h2LRiksCq6tRYL41nWI8KuA5cC4MWgDcNf s7OqutCSBjAkt8oBZSlN4ibk8TLg5v/Lro0ru8Es6EvCjFJxzDQUaKudKV4arSzZ QhQ4hxprrOF5nSqBNUH4n5/Sx/j7P99d16SucoDWruXlMyb8UTu6Fv36RZpu4QnZ 1ILqfykc/3c3YP411HRq06hajLuR2DAORHEgUE3TtiLcdHBYPHfkSFwqv4BMlC8= =9Vms -----END PGP SIGNATURE----- ------enig2BRIASGMJXGOQWMSNRGWB--