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Date: Wed, 26 Feb 2014 07:56:58 +0100
Message-ID: <CABPqkBSH-cHDZ16y0WMyJ2e-kmJ6G_8DkJXPDa7pc4Hp63xG4g@mail.gmail.com>
Subject: Re: Info: mapping multiple BARs. Your kernel is fine.
From: Stephane Eranian <eranian@google.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>, lkml <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Paul Mackerras <paulus@samba.org>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        x86 <x86@kernel.org>, Daniel Vetter <daniel.vetter@ffwll.ch>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        David Airlie <airlied@linux.ie>, intel-gfx@lists.freedesktop.org,
        dri-devel@lists.freedesktop.org, Jiri Kosina <jkosina@suse.cz>
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Hi,

On Tue, Feb 25, 2014 at 11:10 PM, Borislav Petkov <bp@alien8.de> wrote:
> On Tue, Feb 25, 2014 at 07:54:53PM +0100, Stephane Eranian wrote:
>
>> I am on tip.git at cfbf8d4 Linux 3.14-rc4.
>> and I don't see the problem (using Ubuntu Saucy).
>
> Also IVB, model 58?
>
Yes.

>> Given what you commented out, it seems like you're saying
>> something goes wrong with pci_get_device().
>
> Probably. I'll add some debug printk's tomorrow to shed some more light
> on the matter.
>
>> Am I missing some pm callbacks?
>
> Dunno. What do you mean by "pm callbacks" exactly? I don't know that
> code so I have to ask.
>
power management callbacks.

>> The uncore IMC is not used internally.
>
> By IMC I'm assuming this PIC dev:
>
> #define PCI_DEVICE_ID_INTEL_IVB_IMC     0x0154
>
> ?
>
Yes. Needs to point to the DRAM controller.

> And "internally" means by BIOS or something behind the curtains like
> SMM...?
>
I meant by the kernel.