From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1M01eg-0002uX-KJ for qemu-devel@nongnu.org; Fri, 01 May 2009 18:56:30 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1M01eb-0002u2-8e for qemu-devel@nongnu.org; Fri, 01 May 2009 18:56:29 -0400 Received: from [199.232.76.173] (port=50845 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1M01eb-0002tz-3l for qemu-devel@nongnu.org; Fri, 01 May 2009 18:56:25 -0400 Received: from fmmailgate01.web.de ([217.72.192.221]:42118) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1M01ea-0006iF-F6 for qemu-devel@nongnu.org; Fri, 01 May 2009 18:56:24 -0400 Message-ID: <49FB7E16.8000309@web.de> Date: Sat, 02 May 2009 00:56:22 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <20090501211717.24514.23246.stgit@mchn012c.ww002.siemens.net> <49FB7A40.1020005@us.ibm.com> In-Reply-To: <49FB7A40.1020005@us.ibm.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig5B8FA4FE47EC20234AC2E707" Sender: jan.kiszka@web.de Subject: [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Avi Kivity , qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig5B8FA4FE47EC20234AC2E707 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Anthony Liguori wrote: > Jan Kiszka wrote: >> Besides refreshed versions of my already posted fixes and cleanups for= >> KVM, this series comes with patches to enable live migration in KVM >> mode. If there is still some migration bit missing compared to qemu-kv= m, >> please let me know. >> =20 >=20 > In qemu-kvm, we also save: >=20 > MSR_IA32_TSC That should be cured by patch 9 now. At least it works for me (TM). > mp_state There is no mp_state upstream yet. > interrupt_bitmap >=20 > In QEMU, we probably should just emulate MSR_IA32_TSC and then we can > reuse that for save/restore. >=20 > interrupt_bitmap is a bit more tricky. It only ever can have one bit > set AFAICT but I don't see anything that we're currently saving that > maps to it which leads me to wonder why KVM needs it and QEMU doesn't. As far as I understood it, interrupt_bitmap will become relevant for in-kernel irqchips. Hmm, I wonder if we should pick up the change and align the CPU on-disk format with KVM in revision 9, even if we do not yet need all fields. What do you think? Jan --------------enig5B8FA4FE47EC20234AC2E707 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkn7fhYACgkQniDOoMHTA+ljvgCfdBkmMeu5ZWeew+f3vGwX0bxc H0YAn0iHXDTaXkvf+qHV3+bTeLIjeLNM =hMQN -----END PGP SIGNATURE----- --------------enig5B8FA4FE47EC20234AC2E707--