From: Sander Eikelenboom <linux@eikelenboom.it>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
David Vrabel <david.vrabel@citrix.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
rafael.j.wysocki@intel.com, linux-acpi@vger.kernel.org,
xen-devel <xen-devel@lists.xenproject.org>,
linux-kernel@vger.kernel.org
Subject: Re: Regression due to "device property: Make it possible to use secondary firmware nodes" Re: Xen-unstable + linux 4.1-mergewindow: problems with PV guest pci passthrough: pcifront pci-0: pciback not responding!!!
Date: Fri, 15 May 2015 00:47:27 +0200 [thread overview]
Message-ID: <18910734540.20150515004727@eikelenboom.it> (raw)
In-Reply-To: <238309395.20150513005236@eikelenboom.it>
Sorry for the resend, i messed up the to's en from's.
Hi Konrad / David,
One big snip on this thread, got some more debug info, hopefully this will
lead to something:
On a working kernel (with the two seemingly non related patches reverted) i get:
[ 0.717796] pcifront pci-0: Allocated pdev @ 0xffff880019e11780 pdev->sh_info @ 0xffff880018f58000
[ 0.717848] pcifront pci-0: ?!?!? before alloc gntref: 0
[ 0.717871] pcifront pci-0: ?!?!? after alloc gntref: 8
[ 0.717892] pcifront pci-0: ?!?!? before alloc evtchn: -1
[ 0.717915] pcifront pci-0: ?!?!? after alloc evtchn: 17
[ 0.717984] pcifront pci-0: ?!?!? bound evtchn:17 to irqhandler:-1 err:31
[ 0.721640] pcifront pci-0: publishing successful!
[ 0.723684] usbcore: registered new interface driver udlfb
[ 0.724664] xen:xen_evtchn: Event-channel device installed
[ 0.726597] pcifront pci-0: Installing PCI frontend
[ 0.726853] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.727059] pcifront pci-0: Creating PCI Frontend Bus 0000:00
[ 0.727363] pcifront pci-0: PCI host bridge to bus 0000:00
[ 0.727391] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 0.727417] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffffff]
[ 0.727452] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.727475] pci_bus 0000:00: scanning bus
[ 0.727503] pcifront pci-0: read dev=0000:00:00.0 - offset 0 size 4
[ 0.728253] Linux agpgart interface v0.103
[ 0.728387] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180 seconds, margin is 60 seconds).
[ 0.728474] [drm] Initialized drm 1.1.0 20060810
[ 0.728551] [drm] radeon kernel modesetting enabled.
[ 0.730319] pcifront pci-0: ?!?!? pciback responded !!! irq:31 irq_flags:ffff880019e100a8 ns: 1431641785551700000 ns_timeout: 1431641787541235000 evtchn:17 gnt_ref:8
[ 0.730319] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 0.730319] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 0.730319] pcifront pci-0: read got back value 11113f6
[ 0.738845] pcifront pci-0: read dev=0000:00:00.0 - offset e size 1
[ 0.744976] brd: module loaded
[ 0.745204] pcifront pci-0: ?!?!? pciback responded !!! irq:31 irq_flags:ffff880019e100a8 ns: 1431641785562852000 ns_timeout: 1431641787552580000 evtchn:17 gnt_ref:8
[ 0.745204] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:14 size:1
[ 0.745204] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:14 size:1
[ 0.745204] pcifront pci-0: read got back value 0
[ 0.749204] pcifront pci-0: read dev=0000:00:00.0 - offset 6 size 2
[ 0.750155] loop: module loaded
[ 0.752527] pcifront pci-0: ?!?!? pciback responded !!! irq:31 irq_flags:ffff880019e100a8 ns: 1431641785570841000 ns_timeout: 1431641787562917000 evtchn:17 gnt_ref:8
[ 0.752527] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:6 size:2
[ 0.752527] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:6 size:2
[ 0.752527] pcifront pci-0: read got back value 210
[ 0.757187] pcifront pci-0: read dev=0000:00:00.0 - offset 34 size 1
Were as in the non-working situation i get:
[ 0.751244] pcifront pci-0: Allocated pdev @ 0xffff880019ec2e00 pdev->sh_info @ 0xffff88001aa51000
[ 0.751295] pcifront pci-0: ?!?!? before alloc gntref: 0
[ 0.751315] pcifront pci-0: ?!?!? after alloc gntref: 8
[ 0.751334] pcifront pci-0: ?!?!? before alloc evtchn: -1
[ 0.751355] pcifront pci-0: ?!?!? after alloc evtchn: 17
[ 0.751422] pcifront pci-0: ?!?!? bound evtchn:17 to irqhandler:-1 err:31
[ 0.755215] pcifront pci-0: publishing successful!
[ 0.757341] usbcore: registered new interface driver udlfb
[ 0.758365] xen:xen_evtchn: Event-channel device installed
[ 0.760419] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.760819] pcifront pci-0: Installing PCI frontend
[ 0.761518] pcifront pci-0: Creating PCI Frontend Bus 0000:00
[ 0.761684] pcifront pci-0: PCI host bridge to bus 0000:00
[ 0.761710] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 0.761733] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffffff]
[ 0.761763] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.761783] pci_bus 0000:00: scanning bus
[ 0.761805] pcifront pci-0: read dev=0000:00:00.0 - offset 0 size 4
[ 0.767207] Linux agpgart interface v0.103
[ 0.767362] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180 seconds, margin is 60 seconds).
[ 0.767439] [drm] Initialized drm 1.1.0 20060810
[ 0.767515] [drm] radeon kernel modesetting enabled.
[ 0.766948] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641983026498000 ns_timeout: 1431641983026497000 evtchn:0 gnt_ref:0
[ 0.766948] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 0.766948] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 0.766948] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 2.762062] pcifront pci-0: read dev=0000:00:01.0 - offset 0 size 4
[ 2.765203] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641985026742000 ns_timeout: 1431641985026741000 evtchn:0 gnt_ref:0
[ 2.765203] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 2.765203] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 2.765203] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 4.762172] pcifront pci-0: read dev=0000:00:02.0 - offset 0 size 4
[ 4.764231] brd: module loaded
[ 4.765508] loop: module loaded
[ 4.766748] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641987026850000 ns_timeout: 1431641987026849000 evtchn:0 gnt_ref:0
[ 4.766748] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 4.766748] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 4.766748] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 6.762248] pcifront pci-0: read dev=0000:00:03.0 - offset 0 size 4
[ 6.765545] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641989026930000 ns_timeout: 1431641989026929000 evtchn:0 gnt_ref:0
[ 6.765545] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 6.765545] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 6.765545] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 8.762329] pcifront pci-0: read dev=0000:00:04.0 - offset 0 size 4
[ 8.765626] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641991027006000 ns_timeout: 1431641991027005000 evtchn:0 gnt_ref:0
[ 8.765626] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 8.765626] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 8.765626] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 10.762410] pcifront pci-0: read dev=0000:00:05.0 - offset 0 size 4
[ 10.765701] pcifront pci-0: pciback not responding!!! irq:31 irq_flags:ffff880019ec0028 ns: 1431641993027087000 ns_timeout: 1431641993027086000 evtchn:0 gnt_ref:0
[ 10.765701] pcifront pci-0: ?!?!? op cmd:0 err:0 info:0 offset:0 size:4
[ 10.765701] pcifront pci-0: ?!?!? active_op cmd:0 err:0 info:0 offset:0 size:4
[ 10.765701] pcifront pci-0: other err read got back err: ffffffff value: 0
[ 12.762472] pcifront pci-0: read dev=0000:00:06.0 - offset 0 size 4
So somehow in the non-working situation, pdev->evtchn and pdev->gnt_ref are 0 in
xen-pcifront.c:do_pci_op(), so no wonder it's not getting a response back ...
Question is .. why ?
--
Sander
prev parent reply other threads:[~2015-05-14 22:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <135105791.20150427174800@eikelenboom.it>
[not found] ` <16510049578.20150505001849@eikelenboom.it>
2015-05-11 15:20 ` Regression due to "device property: Make it possible to use secondary firmware nodes" Re: Xen-unstable + linux 4.1-mergewindow: problems with PV guest pci passthrough: pcifront pci-0: pciback not responding!!! Konrad Rzeszutek Wilk
2015-05-12 0:59 ` Rafael J. Wysocki
2015-05-12 15:45 ` Rafael J. Wysocki
2015-05-12 15:24 ` Sander Eikelenboom
2015-05-12 22:52 ` Sander Eikelenboom
2015-05-12 23:30 ` Rafael J. Wysocki
2015-05-14 22:44 ` Konrad Rzeszutek Wilk, David Vrabel
2015-05-14 22:47 ` Sander Eikelenboom [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=18910734540.20150515004727@eikelenboom.it \
--to=linux@eikelenboom.it \
--cc=david.vrabel@citrix.com \
--cc=konrad.wilk@oracle.com \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rafael.j.wysocki@intel.com \
--cc=rjw@rjwysocki.net \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox