2008-02-28 14:07:36

by Francis Moreau

[permalink] [raw]
Subject: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

Hi,

I gave to the latest -rc (rc3) a test and it appears to fail to load the
nvidiafb module and the reason given is:

nvidiafb: cannot ioremap FB base

Does anybody have a clue ?

Full dmesg output is attached.

Thanks
--
Francis


2008-02-28 14:08:38

by Francis Moreau

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

and here's the dmseg output...

On Thu, Feb 28, 2008 at 3:07 PM, Francis Moreau <[email protected]> wrote:
> Hi,
>
> I gave to the latest -rc (rc3) a test and it appears to fail to load the
> nvidiafb module and the reason given is:
>
> nvidiafb: cannot ioremap FB base
>
> Does anybody have a clue ?
>
> Full dmesg output is attached.
>
> Thanks
> --
> Francis
>



--
Francis


Attachments:
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dmesg.txt (25.84 kB)
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2008-02-28 15:37:59

by Valdis Klētnieks

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Thu, 28 Feb 2008 15:07:27 +0100, Francis Moreau said:
> Hi,
>
> I gave to the latest -rc (rc3) a test and it appears to fail to load the
> nvidiafb module and the reason given is:
>
> nvidiafb: cannot ioremap FB base
>
> Does anybody have a clue ?

Umm.. do you also have vesafb or other FB built as a module? I got bit by
that with the binary NVidia driver, discovered it was because vesafb had
already done an ioremap of the space, but with different caching flags...


Attachments:
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2008-02-28 19:15:12

by Francis Moreau

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Thu, Feb 28, 2008 at 4:37 PM, <[email protected]> wrote:
> On Thu, 28 Feb 2008 15:07:27 +0100, Francis Moreau said:
> > Hi,
> >
> > I gave to the latest -rc (rc3) a test and it appears to fail to load the
> > nvidiafb module and the reason given is:
> >
> > nvidiafb: cannot ioremap FB base
> >
> > Does anybody have a clue ?
>
> Umm.. do you also have vesafb or other FB built as a module? I got bit by
> that with the binary NVidia driver, discovered it was because vesafb had
> already done an ioremap of the space, but with different caching flags...
>

no, actually I have only nvidiafb and it's built in the kernel (not a module).

Thanks
--
Francis

2008-03-01 11:11:51

by Francis Moreau

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

Ok,

After spending (too much) time to bisect this, I found that the looser
commit is:

c31c7d4844ea4817692ae16bf70f9c96c05a50eb
[ x86: CPA, fix alias checks ]

nvidiafb module issue seems just a consequence of this commit.

What's look suspect from the dmesg is this:

PCI: Cannot map mmconfig aperture for segment 0

Any idea what is broken on my laptop ?

BTW, I couldn't revert this commit without conflicts so I gave a test to
c31c7d4844ea4817692ae16bf70f9c96c05a50eb parents. nvidiafb could
be loaded but the system locks during gnome session start...

Thanks

On Thu, Feb 28, 2008 at 3:08 PM, Francis Moreau <[email protected]> wrote:
> and here's the dmseg output...
>
>
>
> On Thu, Feb 28, 2008 at 3:07 PM, Francis Moreau <[email protected]> wrote:
> > Hi,
> >
> > I gave to the latest -rc (rc3) a test and it appears to fail to load the
> > nvidiafb module and the reason given is:
> >
> > nvidiafb: cannot ioremap FB base
> >
> > Does anybody have a clue ?
> >
> > Full dmesg output is attached.
> >
> > Thanks
> > --
> > Francis
> >
>
>
>
> --
> Francis
>



--
Francis

2008-03-02 19:41:18

by Rafael J. Wysocki

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Saturday, 1 of March 2008, Francis Moreau wrote:
> Ok,
>
> After spending (too much) time to bisect this, I found that the looser
> commit is:
>
> c31c7d4844ea4817692ae16bf70f9c96c05a50eb
> [ x86: CPA, fix alias checks ]

Please add yourself to the CC list of the Bugzilla entry at:
http://bugzilla.kernel.org/show_bug.cgi?id=10140

Thanks,
Rafael

2008-03-03 08:07:14

by Francis Moreau

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Sun, Mar 2, 2008 at 8:39 PM, Rafael J. Wysocki <[email protected]> wrote:
> On Saturday, 1 of March 2008, Francis Moreau wrote:
> > Ok,
> >
> > After spending (too much) time to bisect this, I found that the looser
> > commit is:
> >
> > c31c7d4844ea4817692ae16bf70f9c96c05a50eb
> > [ x86: CPA, fix alias checks ]
>
> Please add yourself to the CC list of the Bugzilla entry at:
> http://bugzilla.kernel.org/show_bug.cgi?id=10140
>

OK, done.

Thanks.
--
Francis

2008-03-03 11:47:06

by Rafael J. Wysocki

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Monday, 3 of March 2008, Francis Moreau wrote:
> On Sun, Mar 2, 2008 at 8:39 PM, Rafael J. Wysocki <[email protected]> wrote:
> > On Saturday, 1 of March 2008, Francis Moreau wrote:
> > > Ok,
> > >
> > > After spending (too much) time to bisect this, I found that the looser
> > > commit is:
> > >
> > > c31c7d4844ea4817692ae16bf70f9c96c05a50eb
> > > [ x86: CPA, fix alias checks ]
> >
> > Please add yourself to the CC list of the Bugzilla entry at:
> > http://bugzilla.kernel.org/show_bug.cgi?id=10140
> >
>
> OK, done.

Thanks.

The commit that causes the breakage is going to be reverted.

Rafael

2008-03-03 12:43:09

by Francis Moreau

[permalink] [raw]
Subject: Re: linux-v2.6.25-rc3 issue: nvidiafb: cannot ioremap FB base

On Mon, Mar 3, 2008 at 12:45 PM, Rafael J. Wysocki <[email protected]> wrote:
>
> On Monday, 3 of March 2008, Francis Moreau wrote:
> > On Sun, Mar 2, 2008 at 8:39 PM, Rafael J. Wysocki <[email protected]> wrote:
> > > On Saturday, 1 of March 2008, Francis Moreau wrote:
> > > > Ok,
> > > >
> > > > After spending (too much) time to bisect this, I found that the looser
> > > > commit is:
> > > >
> > > > c31c7d4844ea4817692ae16bf70f9c96c05a50eb
> > > > [ x86: CPA, fix alias checks ]
> > >
> > > Please add yourself to the CC list of the Bugzilla entry at:
> > > http://bugzilla.kernel.org/show_bug.cgi?id=10140
> > >
> >
> > OK, done.
>
> Thanks.
>
> The commit that causes the breakage is going to be reverted.
>

OK.

Don't hesitate to contact me if you want me to do some testing for
the next version.


--
Francis