No warning on resume with different kernel version

No warning on resume with different kernel version

[Rolf Eike Beer]

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Hi,

I'm sure this had worked before. And since I don't do that on a regular basis, 
but only by accident, I have no idea when it stopped working. But with my 
2.6.28 kernel and everything more recent I don't get a warning if there is a 
suspend image of a different kernel version, but simply the new kernel starts 
and throws everything away. Is this a kernel fault or something with the 
userspace stuff? Whom to blame for this?

Greetings,

Eike

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Re: No warning on resume with different kernel version

[Pavel Machek]

On Sat 2009-03-14 16:28:59, Rolf Eike Beer wrote:
> Hi,
> 
> I'm sure this had worked before. And since I don't do that on a regular basis, 
> but only by accident, I have no idea when it stopped working. But with my 
> 2.6.28 kernel and everything more recent I don't get a warning if there is a 
> suspend image of a different kernel version, but simply the new kernel starts 
> and throws everything away. Is this a kernel fault or something with the 
> userspace stuff? Whom to blame for this?

Actually, it should now be possible to resume with different kernel
than the one that did the suspendding...
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: No warning on resume with different kernel version

[Rafael J. Wysocki]

On Monday 16 March 2009, Pavel Machek wrote:
> On Sat 2009-03-14 16:28:59, Rolf Eike Beer wrote:
> > Hi,
> > 
> > I'm sure this had worked before. And since I don't do that on a regular basis, 
> > but only by accident, I have no idea when it stopped working. But with my 
> > 2.6.28 kernel and everything more recent I don't get a warning if there is a 
> > suspend image of a different kernel version, but simply the new kernel starts 
> > and throws everything away. Is this a kernel fault or something with the 
> > userspace stuff? Whom to blame for this?
> 
> Actually, it should now be possible to resume with different kernel
> than the one that did the suspendding...

As long as it is 64-bit.

Something broke if that doesn't work.

Rolf, is your kernel 64-bit?

Thanks,
Rafael

Re: No warning on resume with different kernel version

[Pavel Machek]

On Mon 2009-03-16 21:33:10, Rafael J. Wysocki wrote:
> On Monday 16 March 2009, Pavel Machek wrote:
> > On Sat 2009-03-14 16:28:59, Rolf Eike Beer wrote:
> > > Hi,
> > > 
> > > I'm sure this had worked before. And since I don't do that on a regular basis, 
> > > but only by accident, I have no idea when it stopped working. But with my 
> > > 2.6.28 kernel and everything more recent I don't get a warning if there is a 
> > > suspend image of a different kernel version, but simply the new kernel starts 
> > > and throws everything away. Is this a kernel fault or something with the 
> > > userspace stuff? Whom to blame for this?
> > 
> > Actually, it should now be possible to resume with different kernel
> > than the one that did the suspendding...
> 
> As long as it is 64-bit.
> 
> Something broke if that doesn't work.
> 
> Rolf, is your kernel 64-bit?

And in 32-bit case, we should refuse to load the image. Something
broke if that does not work :-).
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: No warning on resume with different kernel version

[Rafael J. Wysocki]

On Monday 16 March 2009, Pavel Machek wrote:
> On Mon 2009-03-16 21:33:10, Rafael J. Wysocki wrote:
> > On Monday 16 March 2009, Pavel Machek wrote:
> > > On Sat 2009-03-14 16:28:59, Rolf Eike Beer wrote:
> > > > Hi,
> > > > 
> > > > I'm sure this had worked before. And since I don't do that on a regular basis, 
> > > > but only by accident, I have no idea when it stopped working. But with my 
> > > > 2.6.28 kernel and everything more recent I don't get a warning if there is a 
> > > > suspend image of a different kernel version, but simply the new kernel starts 
> > > > and throws everything away. Is this a kernel fault or something with the 
> > > > userspace stuff? Whom to blame for this?
> > > 
> > > Actually, it should now be possible to resume with different kernel
> > > than the one that did the suspendding...
> > 
> > As long as it is 64-bit.
> > 
> > Something broke if that doesn't work.
> > 
> > Rolf, is your kernel 64-bit?
> 
> And in 32-bit case, we should refuse to load the image. Something
> broke if that does not work :-).

Well, the description suggests the boot kernel didn't load the image, but
just continued to boot.  That really depends on what "throws everything away"
means in the original report.  Rolf?

Rafael