From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Ellerman Subject: Re: [PATCH] powerpc: ibmveth: Harden driver initilisation for kexec Date: Fri, 3 Mar 2006 12:10:47 +1100 Message-ID: <200603031210.53220.michael@ellerman.id.au> References: <20060131041055.5623C68A46@ozlabs.org> <200603031122.51174.michael@ellerman.id.au> <20060302163423.f758c5bc.rdunlap@xenotime.net> Reply-To: michael@ellerman.id.au Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0913780759==" Cc: netdev@vger.kernel.org, "Randy.Dunlap" , jgarzik@pobox.com, anton@samba.org Return-path: To: linuxppc64-dev@ozlabs.org In-Reply-To: <20060302163423.f758c5bc.rdunlap@xenotime.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Mime-version: 1.0 Sender: linuxppc64-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org Errors-To: linuxppc64-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org List-Id: netdev.vger.kernel.org --===============0913780759== Content-Type: multipart/signed; boundary="nextPart2908517.1L74LIa63z"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit --nextPart2908517.1L74LIa63z Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Fri, 3 Mar 2006 11:34, Randy.Dunlap wrote: > On Fri, 3 Mar 2006 11:22:45 +1100 Michael Ellerman wrote: > > Hi Jeff, > > > > I realise it's late, but it'd be really good if you could send this up > > for 2.6.16, we're hosed without it. > > I'm wondering if this means that for every virtual/hypervisor > situation, we have to modify any $interested_drivers. > Why wouldn't we come up with a cleaner solution (in the long term)? > > E.g., could the hypervisor know when one of it's virtual OSes > dies or reboots and release its resources then? It does exactly that for a regular reboot, but when we kexec we _don't_ die= or=20 reboot, as far as the Hypervisor is concerned it's all systems go. It's something of a double-edged sword, we're totally in control which give= s=20 us lots of flexibility, and _fast_ reboot times, but we also have to do a b= it=20 of extra stuff (ie. this patch) to keep things sane. cheers =2D-=20 Michael Ellerman IBM OzLabs wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183) We do not inherit the earth from our ancestors, we borrow it from our children. - S.M.A.R.T Person --nextPart2908517.1L74LIa63z Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQBEB5eddSjSd0sB4dIRAm1sAJ4kJtzE0yr0NyAchxgdvLRyvz1avwCeP2gh 48/KsIWxm/+knqq2W0z9Kfc= =3xSW -----END PGP SIGNATURE----- --nextPart2908517.1L74LIa63z-- --===============0913780759== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Linuxppc64-dev mailing list Linuxppc64-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc64-dev --===============0913780759==--