linux-kernel - Re: [LKP] [sb_edac] 50d1bb93672: EDAC sbridge: ECC is disabled. Aborting

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Date:	Fri, 19 Dec 2014 13:26:59 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Mauro Carvalho Chehab <mchehab@....samsung.com>
Cc:	Aristeu Rozanski <aris@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: Re: [LKP] [sb_edac] 50d1bb93672: EDAC sbridge: ECC is disabled.
 Aborting

On Thu, 2014-12-18 at 09:05 -0200, Mauro Carvalho Chehab wrote:
> Hi Huang,
> 
> Em Thu, 18 Dec 2014 16:13:26 +0800
> Huang Ying <ying.huang@...el.com> escreveu:
> 
> > FYI, we noticed the below changes on
> > 
> > commit 50d1bb93672fa2f42cec6e06ce799fbe864f57e9 ("sb_edac: add support for Haswell based systems")
> > 
> > Something new in kernel log.  This may be expected.  Just FYI.
> > 
> > [   12.490615] EDAC sbridge: Seeking for: PCI ID 8086:2fa0
> > [   12.491031] EDAC sbridge: Seeking for: PCI ID 8086:2fa0
> > [   12.491454] EDAC sbridge: Seeking for: PCI ID 8086:2ffc
> > [   12.491865] EDAC sbridge: Seeking for: PCI ID 8086:2ffc
> > [   12.492284] EDAC sbridge: Seeking for: PCI ID 8086:2ffd
> > [   12.492698] EDAC sbridge: Seeking for: PCI ID 8086:2ffd
> > [   12.493110] EDAC sbridge: Seeking for: PCI ID 8086:2f60
> > [   12.493528] EDAC sbridge: Seeking for: PCI ID 8086:2fa8
> > [   12.493943] EDAC sbridge: Seeking for: PCI ID 8086:2fa8
> > [   12.494359] EDAC sbridge: Seeking for: PCI ID 8086:2f71
> > [   12.494789] EDAC sbridge: Seeking for: PCI ID 8086:2f71
> > [   12.495206] EDAC sbridge: Seeking for: PCI ID 8086:2faa
> > [   12.495622] EDAC sbridge: Seeking for: PCI ID 8086:2faa
> > [   12.496040] EDAC sbridge: Seeking for: PCI ID 8086:2fab
> > [   12.496462] EDAC sbridge: Seeking for: PCI ID 8086:2fab
> > [   12.496878] EDAC sbridge: Seeking for: PCI ID 8086:2fac
> > [   12.497297] EDAC sbridge: Seeking for: PCI ID 8086:2fac
> > [   12.497714] EDAC sbridge: Seeking for: PCI ID 8086:2fad
> > [   12.497923] IOAPIC[0]: Set routing entry (8-22 -> 0xb3 -> IRQ 22 Mode:1 Active:1 Dest:1)
> > [   12.497927] IOAPIC[0]: Set IRTE entry (P:1 FPD:0 Dst_Mode:1 Redir_hint:1 Trig_Mode:0 Dlvry_Mode:1 Avail:0 Vector:B3 Dest:00000001 SID:F0FF SQ:0 SVT:1)
> > [   12.497981] snd_hda_intel 0000:00:1b.0: irq 75 for MSI/MSI-X
> > [   12.498086] IOAPIC[1]: Set routing entry (9-12 -> 0xe3 -> IRQ 36 Mode:1 Active:1 Dest:1)
> > [   12.498089] IOAPIC[1]: Set IRTE entry (P:1 FPD:0 Dst_Mode:1 Redir_hint:1 Trig_Mode:0 Dlvry_Mode:1 Avail:0 Vector:E3 Dest:00000001 SID:002C SQ:0 SVT:1)
> > [   12.498093] snd_hda_intel 0000:02:00.1: Disabling MSI
> > [   12.498109] snd_hda_intel 0000:02:00.1: Handle VGA-switcheroo audio client
> > [   12.502542] EDAC sbridge: Seeking for: PCI ID 8086:2fad
> > [   12.502956] EDAC sbridge: Seeking for: PCI ID 8086:2fbd
> > [   12.503365] EDAC sbridge: Seeking for: PCI ID 8086:2f68
> > [   12.503781] EDAC sbridge: Seeking for: PCI ID 8086:2f68
> > [   12.504197] EDAC sbridge: Seeking for: PCI ID 8086:2f79
> > [   12.504620] EDAC sbridge: Seeking for: PCI ID 8086:2f6a
> > [   12.505041] EDAC sbridge: Seeking for: PCI ID 8086:2f6b
> > [   12.505452] EDAC sbridge: Seeking for: PCI ID 8086:2f6c
> > [   12.505869] EDAC sbridge: Seeking for: PCI ID 8086:2f6d
> > [   12.506298] EDAC sbridge: ECC is disabled. Aborting
> > [   12.506718] EDAC sbridge: Couldn't find mci handler
> 
> Not sure about what are you complaining, since you didn't show how was
> the log before.

In fact, I am not complaining :-), just FYI. As I said, this may be a
expected behavior because this is a Haswell machine and the Haswell
support was added in this patch.

> From the above, what looks weird, from EDAC driver PoV, is:
> 	[   12.506298] EDAC sbridge: ECC is disabled. Aborting

This is what I want help from you to confirm whether it is abnormal.

> Does it used to work before? If so, was there any BIOS setting change?
> Does the memories used on this machine have ECC?

This is a high-end desktop, there is something as below in dmidecode
output.  Is there some other way to tell whether the memories have ECC?

Handle 0x0018, DMI type 16, 23 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: Multi-bit ECC
        Maximum Capacity: 128 GB
        Error Information Handle: Not Provided
        Number Of Devices: 4

Handle 0x001A, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0018
        Error Information Handle: Not Provided
        Total Width: 72 bits
        Data Width: 72 bits
        Size: 8192 MB
        Form Factor: DIMM
        Set: None
        Locator: DIMM_A1
        Bank Locator: CPU 0
        Type: <OUT OF SPEC>
        Type Detail: Synchronous
        Speed: 1067 MHz
        Manufacturer: 0x11
        Serial Number: Unknown
        Asset Tag: Unknown
        Part Number: Unknown
        Rank: 1
        Configured Clock Speed: Unknown


Best Regards,
Huang, Ying


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