Kernel Newbies archive on lore.kernel.org
 help / color / Atom feed
From: Muni Sekhar <munisekharrms@gmail.com>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: linux-pci@vger.kernel.org,
	kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Re: pcie: kernel log - BAR 15: no space for... BAR 15: failed to assign..
Date: Tue, 11 Feb 2020 19:36:00 +0530
Message-ID: <CAHhAz+jdEK73ji4MsuV3jsDih8qNG5p9Ywzn_1iuTseGNp2cBQ@mail.gmail.com> (raw)
In-Reply-To: <20200210222834.GA74627@google.com>

On Tue, Feb 11, 2020 at 3:58 AM Bjorn Helgaas <helgaas@kernel.org> wrote:
>
> On Sun, Feb 09, 2020 at 07:59:41AM +0530, Muni Sekhar wrote:
> > Hi all,
> >
> > After rebooting the system following messages are seen in dmesg.
> > Not sure if these indicate a problem. Can some one look at these and
> > confirm if this is problem or can be ignored ?
> >
> > Also any suggestions as to what would cause this?
> >
> > [    1.084728] pci 0000:00:1c.0: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.084813] pci 0000:00:1c.0: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.084890] pci 0000:00:1c.2: BAR 14: no space for [mem size 0x00200000]
> > [    1.084949] pci 0000:00:1c.2: BAR 14: failed to assign [mem size 0x00200000]
> > [    1.085037] pci 0000:00:1c.2: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.085108] pci 0000:00:1c.2: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.085199] pci 0000:00:1c.3: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.085270] pci 0000:00:1c.3: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.085343] pci 0000:00:1c.0: BAR 13: assigned [io  0x1000-0x1fff]
> > [    1.085403] pci 0000:00:1c.2: BAR 13: assigned [io  0x2000-0x2fff]
> > [    1.085470] pci 0000:00:1c.3: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.085540] pci 0000:00:1c.3: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.085613] pci 0000:00:1c.2: BAR 14: no space for [mem size 0x00200000]
> > [    1.085672] pci 0000:00:1c.2: BAR 14: failed to assign [mem size 0x00200000]
> > [    1.085738] pci 0000:00:1c.2: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.085808] pci 0000:00:1c.2: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.085884] pci 0000:00:1c.0: BAR 15: no space for [mem size
> > 0x00200000 64bit pref]
> > [    1.085954] pci 0000:00:1c.0: BAR 15: failed to assign [mem size
> > 0x00200000 64bit pref]
> > [    1.086026] pci 0000:00:1c.0: PCI bridge to [bus 01]
> > [    1.086083] pci 0000:00:1c.0:   bridge window [io  0x1000-0x1fff]
> > [    1.086144] pci 0000:00:1c.0:   bridge window [mem 0xd0400000-0xd07fffff]
>
> The "no space" and "failed to assign" messages are all for bridge
> windows (13 is the I/O window, 14 is the MMIO window, 15 is the MMIO
> pref window).  I can't tell if you have any devices below these
> bridges (lspci would show them).  If you don't have any devices below
> these bridges, you can ignore the messages.
I have the devices below these bridges. FPGA endpoint is connected to
'00:1c.0 PCI bridge' and Ethernet controller is connected to '00:1c.3
PCI bridge'.
Does these messages impact the functionality of the connected devices?
If so what kind of impact and is there any solution for this?
Also, I'd like to know why "no space" and "failed to assign" messages displayed?


>
> Bjorn



-- 
Thanks,
Sekhar

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

  reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-09  2:29 Muni Sekhar
2020-02-10 22:28 ` Bjorn Helgaas
2020-02-11 14:06   ` Muni Sekhar [this message]
2020-02-11 14:40     ` Bjorn Helgaas
2020-02-11 16:32       ` Muni Sekhar
2020-02-11 20:16         ` Bjorn Helgaas
2020-02-12  8:12           ` Muni Sekhar

Reply instructions:

You may reply publically 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=CAHhAz+jdEK73ji4MsuV3jsDih8qNG5p9Ywzn_1iuTseGNp2cBQ@mail.gmail.com \
    --to=munisekharrms@gmail.com \
    --cc=helgaas@kernel.org \
    --cc=kernelnewbies@kernelnewbies.org \
    --cc=linux-pci@vger.kernel.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

Kernel Newbies archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kernelnewbies/0 kernelnewbies/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kernelnewbies kernelnewbies/ https://lore.kernel.org/kernelnewbies \
		kernelnewbies@kernelnewbies.org
	public-inbox-index kernelnewbies

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernelnewbies.kernelnewbies


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git