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

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Date:	Tue, 25 Feb 2014 18:39:46 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Stephane Eranian <eranian@...gle.com>
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.

On Tue, Feb 25, 2014 at 05:33:13PM +0100, Stephane Eranian wrote:
> No, it's a T430s. What happens if you boot vanilla tip.git?

linus/master + tip/master -> fails
tip/master		  -> fails

All trees are from today, like an hour ago or so.

Doing what hpa suggested:

diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index b262c6124cf3..ec217d2d28dd 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -3871,6 +3871,7 @@ static int __init uncore_pci_init(void)
                pci_uncores = snb_pci_uncores;
                uncore_pci_driver = &snb_uncore_pci_driver;
                break;
+#if 0
        case 58: /* Ivy Bridge */
                ret = snb_pci2phy_map_init(PCI_DEVICE_ID_INTEL_IVB_IMC);
                if (ret)
@@ -3878,6 +3879,7 @@ static int __init uncore_pci_init(void)
                pci_uncores = snb_pci_uncores;
                uncore_pci_driver = &ivb_uncore_pci_driver;
                break;
+#endif
        case 60: /* Haswell */
        case 69: /* Haswell Celeron */
                ret = snb_pci2phy_map_init(PCI_DEVICE_ID_INTEL_HSW_IMC);

for model 58, IVB, works around the issue.

Thanks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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