From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-1.mimecast.com ([207.211.31.81]:31256 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732239AbfKFRiS (ORCPT ); Wed, 6 Nov 2019 12:38:18 -0500 Date: Wed, 6 Nov 2019 18:37:54 +0100 From: Cornelia Huck Subject: Re: [RFC 30/37] DOCUMENTATION: protvirt: Diag 308 IPL Message-ID: <20191106183754.68e1be0f.cohuck@redhat.com> In-Reply-To: <6dd98dfe-63ce-374c-9b04-00cdeceee905@linux.ibm.com> References: <20191024114059.102802-1-frankja@linux.ibm.com> <20191024114059.102802-31-frankja@linux.ibm.com> <20191106174855.13a50f42.cohuck@redhat.com> <6dd98dfe-63ce-374c-9b04-00cdeceee905@linux.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/KFFssDcS.y.elHxVLw6NCDc"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-s390-owner@vger.kernel.org List-ID: To: Janosch Frank Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org, thuth@redhat.com, david@redhat.com, borntraeger@de.ibm.com, imbrenda@linux.ibm.com, mihajlov@linux.ibm.com, mimu@linux.ibm.com, gor@linux.ibm.com --Sig_/KFFssDcS.y.elHxVLw6NCDc Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 6 Nov 2019 18:05:22 +0100 Janosch Frank wrote: > On 11/6/19 5:48 PM, Cornelia Huck wrote: > > On Thu, 24 Oct 2019 07:40:52 -0400 > > Janosch Frank wrote: > > =20 > >> Description of changes that are necessary to move a KVM VM into > >> Protected Virtualization mode. > >> > >> Signed-off-by: Janosch Frank > >> --- > >> Documentation/virtual/kvm/s390-pv-boot.txt | 62 +++++++++++++++++++++= + > >> 1 file changed, 62 insertions(+) > >> create mode 100644 Documentation/virtual/kvm/s390-pv-boot.txt > > So... what do we IPL from? Is there still a need for the bios? > >=20 > > (Sorry, I'm a bit confused here.) > > =20 >=20 > We load a blob via the bios (all methods are supported) and that blob > moves itself into protected mode. I.e. it has a small unprotected stub, > the rest is an encrypted kernel. >=20 Ok. The magic is in the loaded kernel, and we don't need modifications to the bios? --Sig_/KFFssDcS.y.elHxVLw6NCDc Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEw9DWbcNiT/aowBjO3s9rk8bwL68FAl3DBPIACgkQ3s9rk8bw L68O9Q/+PNV0FWP35V+Byn2eX/IP2pwYzdpktSY2sS/oEIJ2PnUHuJbTqazcwyul JEJx6NWOunSsqLE4kJHUqncbfLzq+LkbuO+/IXVW7SWuf+J3XhMbT8JyHSSksI6e LVZgI4D40G4kfCmMT4UubszAnpmpwnxZcgIiCy7Ry5qZEx2jPVxAo6HR3zQ9nkW2 yk+xhrjGmjk0uVR5Ec76jmSTeqMlcDNNQ+wjrZI5TV8HlrxOyaAaJd27MJPuaoPL GvWjYvVzt8MePAa+T8OXTwR4JSI6YMwUx9X4OuOFIunfgg18f8rWwVqJ0Y/DPw8g c/rhM3wTfWnOOKCl8qFSBbYXv3ps7YSuJHUIMjRdbNIj4JWXEjpEC4oolMJe5gT7 rNf14r6ERv2y5jMgojSKjwCuh7ZO0ocPeJCTuYxOt3GM8bZ9kSJXE2oxnXXrRchS MaLTVQj/GUmgowh/8yyBBksrXRapzQ9V08iBkATKn5fUN89/xcVFTZnCUe3VkZfI KQ15yj7LrDKMAMBwJh3G7MHaNoQnO7GlOFpRluWVNaLRmw84jFBHufxKnm7urTHe YhC+KH4rPuAerO+VtTHWqSFH3UPyP/8w96q1LLj9kCXXutYKQwcyg29m98L/MCFV qeNEKJfWDyw+PQl5CVtX6hogkMfhpzWQ2eDeTDkLn544d7DeR1E= =VQrj -----END PGP SIGNATURE----- --Sig_/KFFssDcS.y.elHxVLw6NCDc--