On Wed, Feb 10, 2010 at 11:58:00PM +0100, Rafael J. Wysocki wrote: > On Wednesday 10 February 2010, Gary Hade wrote: > > On Wed, Feb 10, 2010 at 10:42:11PM +0100, Rafael J. Wysocki wrote: > > > On Wednesday 10 February 2010, Gary Hade wrote: > > > > On Wed, Feb 10, 2010 at 07:00:54PM +0100, Rafael J. Wysocki wrote: > > > > > On Wednesday 10 February 2010, Gary Hade wrote: > > > > > > On Wed, Feb 10, 2010 at 02:12:29AM +0100, Rafael J. Wysocki wrote: > > > > > > > On Wednesday 10 February 2010, Rafael J. Wysocki wrote: > > > > > > > > On Wednesday 10 February 2010, Gary Hade wrote: > > > > > > > > > On Tue, Feb 09, 2010 at 12:58:39PM -0800, Gary Hade wrote: > > > > > > > > ... > > > > > > > > > > OK. I already confirmed that the problem reproduces with your > > > > > > > > > > patches applied. I am now in the process of trying vanilla > > > > > > > > > > 2.6.33-rc7. If hot-add works with 2.6.33-rc7 I will give > > > > > > > > > > your patch a try. > > > > > > > > > > > > > > > > > > The hot-add worked fine with an unpatched 2.6.33-rc7. > > > > > > > > > > > > > > > > Good. > > > > > > > > > > > > > > > > > The new patch when added to the 2.6.33-rc7 tree that > > > > > > > > > included the original patchset unfortunately did not > > > > > > > > > correct the problem. > > > > > > > > > > > > > > > > Bad. > > > > > > > > > > > > > > > > Well, fortunately I have another one, but I haven't tested it myself yet except > > > > > > > > for checking that it builds. Hopefully it won't break things more. > > > > > > > > > > > > > > > > The patch below applies on top of 2.6.33-rc7 with my PCI runtime PM patchset > > > > > > > > applied. Please test it and let me know the results. > > > > > > > > > > > > > > Sorry, I sent a wrong version of the patch by mistake, it doesn't even build. > > > > > > > The correct one is appended. > > > > > > > > > > > > No problem. I received this message before doing anything with > > > > > > the previous one. > > > > > > > > > > > > Sorry, both hot-add and hot-remove behaviors appear unchanged > > > > > > with this patch. > > > > > > > > > > Hmm, that's kind of strange. I'm getting suspicious. > > > > > > > > > > > I would like to dig into the code and help with the debugging > > > > > > but I am swamped with other things right now. However, feel > > > > > > free to continue using me for testing if you have other ideas > > > > > > you want me to try. > > > > > > > > > > Thanks, of course I have some ideas. :-) > > > > > > > > > > First, please try to test 2.6.33-rc7 with patches [1/9] - [7/9] applied > > > > > (ie. without the $subject patch and [9/9]). Let's make sure we're debugging > > > > > the right patch. > > > > > > > > It does look like both the hot-add and hot-remove issues were > > > > introduced by something in 1/9 through 7/9. I started with a > > > > clean 2.6.33-rc7 tree and applied only 1/9 through 7/9. I still > > > > see that lingering blinking amber LED with hot-remove and no > > > > response from the driver during hot-add. > > > > > > > > Now I suppose you want me to start reverting 1/9 through 7/9 > > > > in reverse order to find the culprit. :) > > > > > > Actually, I think [6/9] is the offending one, so please try with [1/9] - [5/9] > > > applied and if that works, please apply [6/9] and retest to confirm it's the > > > culprit. > > > > Yes, 6/9 also appeared to be the most likely suspect to me and > > I was already doing what you asked except in the opposite order. > > With 1/9 through 6/9 both the hot-add and hot-remove issues still > > reproduced. After removing 6/9 both issues disappeared. > > Thanks for verifying, I've already started to look for bugs in it. Thanks! > > What's your kernel command line, BTW? root=/dev/disk/by-id/scsi-35000c5000036ffcb-part7 ip=9.47.66.9:9.47.67.50:9.47.66.1:255.255.254.0 resume=/dev/disk/by-id/scsi-35000c50000370247-part3 crashkernel=256M-:128M console=tty0 console=ttyS0,115200 pci=use_crs pci=norom Gary -- Gary Hade System x Enablement IBM Linux Technology Center 503-578-4503 IBM T/L: 775-4503 garyhade@xxxxxxxxxx http://www.ibm.com/linux/ltc -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
