Re: regression caused by: genirq: do not leave interupts enabled on free_irq

[Yinghai Lu]

On Fri, Apr 11, 2008 at 12:30 AM, Eric W. Biederman
<ebiederm@xxxxxxxxxxxx> wrote:
>
>
>  On Fri, 2008-04-11 at 00:17 -0700, Yinghai Lu wrote:
>  > On Fri, Apr 11, 2008 at 12:14 AM, Yinghai Lu <yhlu.kernel@xxxxxxxxx> wrote:
>  > > On Fri, Apr 11, 2008 at 12:01 AM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>  > >  > On Thu, 10 Apr 2008, Yinghai Lu wrote:
>  > >  >  > last week found:
>  > >  >  > after latest kernel kexec RHEL 5.1 or other stack kernel, the nvidia
>  > >  >  > forcedeth doesn't work anymore.
>  > >  >  >
>  > >  >  > I stared at forcedeth.c two days. and revert every patches about that
>  > >  >  > doesn't help.
>  > >  >
>  > >  >  So forcedeth does not come up again, when you kexec from linus.git
>  > >  >  into an older distro kernel. Or is it the other way round ?
>  > >  RHEL 5.1 kexec RHEL 5.1 : works
>  > >  RHEL 5.1 kexec linus kernel: works
>  > >  linus (after -rc2) kexec linus tree: works:
>  > >  linus  (after -rc2) kexec RHEL 5.1 : forcedeth will not come up
>  > >  linus ( before -rc2 include rc2) kexec RHEL 5.1 works
>  > >
>  > the forcedeth can not get IP address...
>
>  Sounds like you are not getting any interrupts when you receive a
>  packet.  (i.e. The interrupt line is staying disabled).
>
>  Is MSI an option here?  I'm wondering if we disable the MSI and
>  something is not enabling it.



after
setpci -s 0x00:08.0 0x60.b=0xfe

the eth0 can get ip address with ifup eth0.

YH
00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
	Subsystem: nVidia Corporation Unknown device cb84
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0 (250ns min, 5000ns max)
	Interrupt: pin A routed to IRQ 233
	Region 0: Memory at defba000 (32-bit, non-prefetchable) [size=4K]
	Region 1: I/O ports at 8400 [size=8]
	Region 2: Memory at defbe800 (32-bit, non-prefetchable) [size=256]
	Region 3: Memory at defbe400 (32-bit, non-prefetchable) [size=16]
	Capabilities: [44] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 PME-Enable+ DSel=0 DScale=0 PME-
	Capabilities: [70] MSI-X: Enable- Mask- TabSize=8
		Vector table: BAR=2 offset=00000000
		PBA: BAR=3 offset=00000000
	Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable-
		Address: 00000000fee04000  Data: 406a
	Capabilities: [6c] HyperTransport: MSI Mapping
00: de 10 73 03 07 00 b0 00 a3 00 80 06 00 00 00 00
10: 00 a0 fb de 01 84 00 00 00 e8 fb de 00 e4 fb de
20: 00 00 00 00 00 00 00 00 00 00 00 00 de 10 84 cb
30: 00 00 00 00 44 00 00 00 00 00 00 00 0a 01 01 14
40: de 10 84 cb 01 70 02 fe 00 01 00 00 0c 00 00 00
50: 05 6c 86 01 00 40 e0 fe 00 00 00 00 6a 40 00 00
60: ff 00 00 00 00 00 00 00 ff 00 00 00 08 00 03 a8
70: 11 50 07 00 02 00 00 00 03 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 11 00 00 00 52 01 00 00 00 00 00 00

00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
	Subsystem: nVidia Corporation Unknown device cb84
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0 (250ns min, 5000ns max)
	Interrupt: pin A routed to IRQ 106
	Region 0: Memory at defba000 (32-bit, non-prefetchable) [size=4K]
	Region 1: I/O ports at 8400 [size=8]
	Region 2: Memory at defbe800 (32-bit, non-prefetchable) [size=256]
	Region 3: Memory at defbe400 (32-bit, non-prefetchable) [size=16]
	Capabilities: [44] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 PME-Enable+ DSel=0 DScale=0 PME-
	Capabilities: [70] MSI-X: Enable- Mask- TabSize=8
		Vector table: BAR=2 offset=00000000
		PBA: BAR=3 offset=00000000
	Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable+
		Address: 00000000fee07000  Data: 406a
	Capabilities: [6c] HyperTransport: MSI Mapping
00: de 10 73 03 07 00 b0 00 a3 00 80 06 00 00 00 00
10: 00 a0 fb de 01 84 00 00 00 e8 fb de 00 e4 fb de
20: 00 00 00 00 00 00 00 00 00 00 00 00 de 10 84 cb
30: 00 00 00 00 44 00 00 00 00 00 00 00 0a 01 01 14
40: de 10 84 cb 01 70 02 fe 00 01 00 00 0c 00 00 00
50: 05 6c 87 01 00 70 e0 fe 00 00 00 00 6a 40 00 00
60: fe 00 00 00 00 00 00 00 ff 00 00 00 08 00 03 a8
70: 11 50 07 00 02 00 00 00 03 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 11 00 00 00 52 01 00 00 00 00 00 00