From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Larry Finger <Larry.Finger@lwfinger.net>
Subject: fixing "pci=use_crs"
Date: Wed, 16 Sep 2009 17:15:23 -0600
User-Agent: KMail/1.9.10
Cc: Gary Hade <garyhade@us.ibm.com>, Jesse Barnes <jbarnes@virtuousgeek.org>,
       Jaswinder Singh Rajput <jaswinder@kernel.org>,
       Yinghai Lu <yhlu.kernel@gmail.com>,
       Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
       Len Brown <lenb@kernel.org>,
       Linus Torvalds <torvalds@linux-foundation.org>, x86@kernel.org,
       linux-kernel@vger.kernel.org
MIME-Version: 1.0
Content-Type: text/plain;
  charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200909161715.24376.bjorn.helgaas@hp.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 846
Lines: 26

The user currently has to boot with "pci=use_crs" to make
hot-add work on some machines.  I think this is a poor
user experience, and I'd like to figure out a better solution.

We tried making "pci=use_crs" the default, which didn't work
because it broke machines like Larry's.  I'd like to look
at that machine in more detail and figure out what it's doing.

Larry, would you mind collecting the output of:

  # dmesg
  # cat /proc/iomem
  # lspci -vv
  # cd /sys/devices/; grep . pnp*/*/{id,resources}

and attaching them here:

    http://bugzilla.kernel.org/show_bug.cgi?id=14183

Thanks,
  Bjorn
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/