linux-kernel - Re: Info: mapping multiple BARs. Your kernel is fine.

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Message-ID: <CABPqkBSH-cHDZ16y0WMyJ2e-kmJ6G_8DkJXPDa7pc4Hp63xG4g@mail.gmail.com>
Date:	Wed, 26 Feb 2014 07:56:58 +0100
From:	Stephane Eranian <eranian@...gle.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	x86 <x86@...nel.org>, Daniel Vetter <daniel.vetter@...ll.ch>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: Info: mapping multiple BARs. Your kernel is fine.

Hi,

On Tue, Feb 25, 2014 at 11:10 PM, Borislav Petkov <bp@...en8.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.
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