From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:40675) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QmRQt-0002AQ-CB for qemu-devel@nongnu.org; Thu, 28 Jul 2011 10:19:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QmRQs-0000Af-7t for qemu-devel@nongnu.org; Thu, 28 Jul 2011 10:19:27 -0400 Received: from fmmailgate02.web.de ([217.72.192.227]:38432) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QmRQr-0000AA-S0 for qemu-devel@nongnu.org; Thu, 28 Jul 2011 10:19:26 -0400 Message-ID: <4E316FE7.6030005@web.de> Date: Thu, 28 Jul 2011 16:19:19 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <20110727154229.656532d4@doriath> <4E310E6A.6000004@redhat.com> <20110728103143.548d7bb1@doriath> <4E3165FD.7040805@redhat.com> In-Reply-To: <4E3165FD.7040805@redhat.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigB326BA13CD8EDC9F7DA2A04E" Sender: jan.kiszka@web.de Subject: Re: [Qemu-devel] [RFC] Introduce vm_stop_permanent() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Blue Swirl , qemu-devel , Luiz Capitulino This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigB326BA13CD8EDC9F7DA2A04E Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 2011-07-28 15:37, Avi Kivity wrote: > On 07/28/2011 04:31 PM, Luiz Capitulino wrote: >> On Thu, 28 Jul 2011 10:23:22 +0300 >> Avi Kivity wrote: >> >> > On 07/28/2011 12:44 AM, Blue Swirl wrote: >> > > On Wed, Jul 27, 2011 at 9:42 PM, Luiz >> Capitulino wrote: >> > > > This function should be used when the VM is not supposed to >> resume >> > > > execution (eg. by issuing 'cont' monitor command). >> > > > >> > > > Today, we allow the user to resume execution even when: >> > > > >> > > > o the guest shuts down and -no-shutdown is used >> > > > o there's a kvm internal error >> > > > o loading the VM state with -loadvm or "loadvm" in the >> monitor fails >> > > > >> > > > I think only badness can happen from the cases above. >> > > >> > > I'd suppose a system_reset should bring the system back to >> sanity and >> > > then clear vm_permanent_stopped (where's -ly?) >> >> What's -ly? >> >=20 > permanent-ly. >=20 >> > > except maybe for KVM >> > > internal error if that can't be recovered. Then it would not ver= y >> > > permanent anymore, so the name would need adjusting. >> > >> > Currently, all kvm internal errors are recoverable by reset (and >> > possibly by fiddling with memory/registers). >> >> Ok, but a poweroff in the guest isn't recoverable with system_reset >> right? Or does it depend on the guest? >=20 > Right, it's not recoverable if you shut the power down where the tracto= r > beam is coupled to the main reactor. system_reset will bring all emulated devices back into their power-on state - unless we have remaining bugs to fix. Actually, one may consider issuing this reset automatically on vm_start after "permant" vm_stop. Jan --------------enigB326BA13CD8EDC9F7DA2A04E Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk4xb+oACgkQitSsb3rl5xTKZwCgxhSmz7t2fFB6EXhGlCJbw27u ywEAoJ9dT67tBJbshkNUaaaEhA+tiS09 =oohu -----END PGP SIGNATURE----- --------------enigB326BA13CD8EDC9F7DA2A04E--