linux-kernel - Re: kexec boot regression

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Date:	Tue, 15 Dec 2009 22:30:21 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Jens Axboe <jens.axboe@...cle.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>, mingo@...e.hu,
	rdreier@...co.com, Suresh Siddha <suresh.b.siddha@...el.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: kexec boot regression

On Tue, Dec 15, 2009 at 11:04:55AM -0800, Yinghai Lu wrote:
> Jens Axboe wrote:
> > On Tue, Dec 15 2009, Yinghai Lu wrote:
> >> [   13.018720] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
> >>
> >> [   13.100724] [Firmware Bug]: PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] not reserved in ACPI motherboard resources
> > 
> > On a "normal" non-kexec boot, I get:
> > 
> > [   12.173583] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
> > [   12.184075] PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] reserved in E820
> > [   12.216874] PCI: Using configuration type 1 for base access
> > 
> 
> can you run following scripts in first kernel?
> 
> cd /sys/firmware/memmap
> for dir in * ; do
>   start=$(cat $dir/start)
>   end=$(cat $dir/end)
>   type=$(cat $dir/type)
>   printf "%016x-%016x (%s)\n" $start $[ $end +1] "$type" >> /tmp/memmap.txt
> done
> 
> and send out /tmp/memmap.txt
> 
> what is your kexec tools version? could be too old?

I have the same symptoms on my machine, but the underlying cause must be
different. I once reverted all Radeon related changes since 2.6.32 and 
kexec started working again.

Full dmesg and the output of the script is attached.

kexec-tools 2.0.1 released 13th August 2009

-- 
Markus

View attachment "memmap.txt" of type "text/plain" (431 bytes)

View attachment "dmesg" of type "text/plain" (26917 bytes)