Messages in this thread | | | Date | Tue, 15 Dec 2009 04:31:40 -0800 | From | Yinghai Lu <> | Subject | Re: kexec boot regression |
| |
Jens Axboe wrote: > On Tue, Dec 15 2009, Yinghai Lu wrote: >> Jens Axboe wrote: >>> Hi, >>> >>> I have this big box that takes forever to boot, so I use kexec to boot >>> into new kernels. Works fine, but some time past 2.6.32 it stopped >>> working. Instead of wasting brain cycles on finding out why, I handed >>> the problem to my trusty regression friend - git bisect. >>> >>> This is what it found (sorry Yinghai it's you again, you owe me a beer >>> for hours of 2.6.32-git bisecting ;-) >> sure. >> >>> >>> 99935a7a59eaca0292c1a5880e10bae03f4a5e3d is the first bad commit >>> commit 99935a7a59eaca0292c1a5880e10bae03f4a5e3d >>> Author: Yinghai Lu <yinghai@kernel.org> >>> Date: Sun Oct 4 21:54:24 2009 -0700 >>> >>> x86/PCI: read root resources from IOH on Intel >>> >>> For intel systems with multi IOH, we should read peer root resources >>> directly from PCI config space, and don't trust _CRS. >>> >>> >>> I could not revert this single commit, as a further commit made other >>> changes. So I reverted 67f241f4 first and then 99935a7a. I confirmed >>> that this kernel then works fine. >>> >> let see how BIOS mess it up again! > > Heh, I had a feeling this was coming :-) > >> please. > > Please find two logs attached - one from a boot with -git and the two > patches reverted, and one from a boot with -git.
please enabled CONFIG_PCI_DEBUG and boot with debug in boot command line.
Thanks
Yinghai
| |