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Message-ID: <47831D97.7040908@zytor.com> Date: Mon, 07 Jan 2008 22:52:07 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: Ingo Oeser <ioe-lkml@...eria.de> CC: Andi Kleen <andi@...stfloor.org>, Bernd Schubert <bernd-schubert@....de>, linux-kernel@...r.kernel.org Subject: Re: sleep before boot panic Ingo Oeser wrote: > On Monday 07 January 2008, Andi Kleen wrote: >> Bernd Schubert <bernd-schubert@....de> writes: >> >>> Hi, >>> >>> I just switched to libata (pata) on my laptop and the immediate panic made it >>> impossible to figure out why my boot partition wasn't available. >>> After applying this little patch I could check boot printk output and then saw >>> everything was properly recognized and only scsi-disk support was missing. >> The correct fix would be to make scroll back (and sysrq) still work >> after panic. It's a little more complicated, but possible (essentially >> it needs a polled keyboard handler) > > Customer: "This system could not find the root fs." > Support: "Oh, yeah, just connect a (USB-) keyboard and scroll back." > > Hmm, device detection works after panic? > > I really like the "soft" panic better, where you still can operate the > kernel debugging features, but just have no user space supporting it. > Of course, if we'd been using kinit, "soft panic" would have been done exclusively in userspace... -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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