From: Blaisorblade <blaisorblade_spam@yahoo.it> To: user-mode-linux-devel@lists.sourceforge.net Cc: Nuutti Kotivuori <naked@iki.fi>, linux-kernel@vger.kernel.org, user-mode-linux-user@lists.sourceforge.net Subject: Re: [uml-devel] Re: 2.6.9-bb1, 2.4.27-bs1, SKAS3/2.6-V7 released Date: Tue, 9 Nov 2004 12:41:06 +0100 [thread overview] Message-ID: <200411091241.06637.blaisorblade_spam@yahoo.it> (raw) In-Reply-To: <871xf4a5kc.fsf@aka.i.naked.iki.fi> On Monday 08 November 2004 13:28, Nuutti Kotivuori wrote: > Blaisorblade wrote: > > Changes in both 2.6.9 and 2.4.27: > > they run fine on 2.6.9 host kernels, without hanging at the exit. > > I want to get this clear: > Every older guest UML kernel will hang on exit on 2.6.9 hosts from now > on, and there's nothing to fix it but to update the guest UML patches? > This is a nasty limitation in general - because it means that on the > update to 2.6.9, every kernel binary needs to be updated - and finding > rock solid versions of kernels + UML patches is not a fast process. Yes, I perfectly agree with you. However, there are, for 2.6, the security fixes which are needed. Well, it is possible that 2.6.10 (or even 2.6.11) will make again old UML binaries work. I.e., this is my hope, but no code is ready for this, yet. In fact, Linus always said "binary compatibility is important". UML was using a strange undocumented, and unwanted interface, but this is not a good reason for the kernel to break it. I think they did not even notice that. Also, however, I find that the breakage is a real bug. The splitout version of the patches is available, and the uml-hang-on-2.6.9-host.patch is the one to apply. For 2.4, it cannot be applied separately, though (it requires one of the current incrementals, which is included in the patchset). Unfortunately, it does not work on most kernel versions - it can be adapted, though, and if I find time, I will. -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729
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From: Blaisorblade <blaisorblade_spam@yahoo.it> To: user-mode-linux-devel@lists.sourceforge.net Cc: Nuutti Kotivuori <naked@iki.fi>, linux-kernel@vger.kernel.org, user-mode-linux-user@lists.sourceforge.net Subject: Re: [uml-devel] Re: 2.6.9-bb1, 2.4.27-bs1, SKAS3/2.6-V7 released Date: Tue, 9 Nov 2004 12:41:06 +0100 [thread overview] Message-ID: <200411091241.06637.blaisorblade_spam@yahoo.it> (raw) In-Reply-To: <871xf4a5kc.fsf@aka.i.naked.iki.fi> On Monday 08 November 2004 13:28, Nuutti Kotivuori wrote: > Blaisorblade wrote: > > Changes in both 2.6.9 and 2.4.27: > > they run fine on 2.6.9 host kernels, without hanging at the exit. > > I want to get this clear: > Every older guest UML kernel will hang on exit on 2.6.9 hosts from now > on, and there's nothing to fix it but to update the guest UML patches? > This is a nasty limitation in general - because it means that on the > update to 2.6.9, every kernel binary needs to be updated - and finding > rock solid versions of kernels + UML patches is not a fast process. Yes, I perfectly agree with you. However, there are, for 2.6, the security fixes which are needed. Well, it is possible that 2.6.10 (or even 2.6.11) will make again old UML binaries work. I.e., this is my hope, but no code is ready for this, yet. In fact, Linus always said "binary compatibility is important". UML was using a strange undocumented, and unwanted interface, but this is not a good reason for the kernel to break it. I think they did not even notice that. Also, however, I find that the breakage is a real bug. The splitout version of the patches is available, and the uml-hang-on-2.6.9-host.patch is the one to apply. For 2.4, it cannot be applied separately, though (it requires one of the current incrementals, which is included in the patchset). Unfortunately, it does not work on most kernel versions - it can be adapted, though, and if I find time, I will. -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
next prev parent reply other threads:[~2004-11-09 17:43 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-11-04 18:32 2.6.9-bb1, 2.4.27-bs1, SKAS3/2.6-V7 released Blaisorblade 2004-11-04 18:32 ` [uml-devel] " Blaisorblade 2004-11-04 21:44 ` SKAS3/2.6-V7 failed with 2.6.8.1 kaz 2004-11-04 21:44 ` [uml-devel] " kaz 2004-11-04 21:55 ` [uml-devel] Sorry. " kaz 2004-11-04 21:57 ` Brice Goglin 2004-11-04 21:57 ` [uml-devel] " Brice Goglin [not found] ` <30067.1099600259@www73.gmx.net> 2004-11-04 23:46 ` [uml-devel] Re: [uml-user] 2.6.9-bb1, 2.4.27-bs1, SKAS3/2.6-V7 released Blaisorblade 2004-11-05 19:21 ` [uml-devel] " Allen Chan 2004-11-06 3:17 ` Allen Chan 2004-11-08 12:28 ` Nuutti Kotivuori 2004-11-08 12:28 ` [uml-devel] " Nuutti Kotivuori 2004-11-09 11:41 ` Blaisorblade [this message] 2004-11-09 11:41 ` Blaisorblade 2004-11-09 18:06 ` Bodo Stroesser 2004-11-09 18:50 ` Blaisorblade 2004-11-05 2:59 [uml-devel] __wrap_malloc compile error without CONFIG_MODE_TT Peter 2004-11-05 19:42 ` Blaisorblade 2004-11-09 2:17 ` [uml-devel] Re: 2.6.9-bb1, 2.4.27-bs1, SKAS3/2.6-V7 released Peter 2004-11-09 18:35 ` Blaisorblade 2004-11-09 23:12 ` Peter 2004-11-10 8:43 ` stian
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