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Message-Id: <201006091343.48924.toralf.foerster@gmx.de> Date: Wed, 9 Jun 2010 13:43:48 +0200 From: Toralf Förster <toralf.foerster@....de> To: Matthew Garrett <mjg59@...f.ucam.org> Cc: ibm-acpi-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: Re: ThinkPad T400 : should kernel option "reboot=pci" be hard coded ? Hi, Matthew Garrett wrote at 16:11:03 > On Mon, Jun 07, 2010 at 11:22:21AM +0200, Toralf Förster wrote: > > Since some kernel version (IIRC since 2.6.31) it is necessary to boot the > > linux kernel with that option to prevent an extra 9 seconds delay during > > reboot. > > I found this tip on the LKML -and now I'm wondering whether this option > > should be hard coded in the kernel sources b/c it seems to be necessary > > for current kernels too. > > No, the best thing to do would be to figure out what changed to require > the extra 9 seconds. Are you able to work out which the last kernel > release without this timeout was? The delay exists since 2.6.27, versions before them I can't test due to udev-149 which don't work together with version < 2.6.27. Since version 2.6.29 that kernel boot parameter avoids the extra delay, 2.6.28 needs the 9 sec pause independend from what I specify during boot. -- MfG/Kind regards Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- 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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