linux-kernel - Re: x86_64 boot hang when CONFIG

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Message-Id: <20080611150503.858641f8.randy.dunlap@oracle.com>
Date:	Wed, 11 Jun 2008 15:05:03 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: x86_64 boot hang when CONFIG_NUMA=n

On Fri, 6 Jun 2008 20:55:29 -0700 Yinghai Lu wrote:

> On Fri, Jun 6, 2008 at 8:42 AM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> > On Thu, 5 Jun 2008 22:41:01 -0700 Yinghai Lu wrote:
> >
> >> On Thu, Jun 5, 2008 at 2:50 PM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> >> > On 2.6.26-rc[2345], I am seeing a hang during boot with CONFIG_NUMA=n, but changing
> >> > to CONFIG_NUMA=y allows successful boot.
> >> >
> >> > This is on a 4-way AMD64 (HP) server with 8 GB RAM.
> >> >
> >> > Using initcall_debug, the last output on a hang is from arch/x86/pci/k8-bus_64.c:
> >> >
> >> > calling  early_fill_mp_bus_info+0x0/0x7b2
> >> > node 0 link 1: io port [1000, 3fff]
> >> > node 1 link 2: io port [4000, ffff]
> >> > TOM: 0000000080000000 aka 2048M
> >> > node 0 link 1: mmio [e8000000, fddfffff]
> >> > node 1 link 2: mmio [fde00000, fdffffff]
> >> > node 0 link 1: mmio [80000000, 83ffffff]
> >> > node 1 link 2: mmio [84000000, 8fffffff]
> >> > node 0 link 1: mmio [a0000, bffff]
> >> > TOM2: 0000000280000000 aka 10240M
> >> > bus: [00,3f] on node 0 link 1
> >> > bus: 00 index 0 io port: [0, 3fff]
> >> > bus: 00 index 1 mmio: [90000000, fddfffff]
> >> > bus: 00 index 2 mmio: [80000000, 83ffffff]
> >> > bus: 00 index 3 mmio: [a0000, bffff]
> >> > bus: 00 index 4 mmio: [fe000000, ffffffff]
> >> > bus: 00 index 5 mmio: [280000000, fcffffffff]
> >> > bus: [40,ff] on node 1 link 2
> >> > bus: 40 index 0 io port: [4000, ffff]
> >> > bus: 40 index 1 mmio: [fde00000, fdffffff]
> >> >
> >> >
> >> > There should be an index 2 line printed next, like this slightly modifed for debug
> >> > version does (with CONFIG_NUMA=y), or maybe the following line(s) just aren't
> >> > making it to the (net)console log and some other initcall function is actually
> >> > hanging:  (??)
> >> >
> >> > bus: [40,ff] on node 1 link 2
> >> > bus: 40 index 0/3 io port: [4000, ffff]
> >> > bus: 40 index 1/3 mmio: [fde00000, fdffffff]
> >> > bus: 40 index 2/3 mmio: [84000000, 8fffffff]
> >> > early_fill_mp_bus_info: done
> >> >
> >> >
> >> > Has anyone seen something like this?  Any patches to test?
> >> >
> >> > The next initcall functions (on a working boot) are:
> >> >
> >> > calling  arch_kdebugfs_init+0x0/0x8
> >> > initcall arch_kdebugfs_init+0x0/0x8 returned 0 after 0 msecs
> >> > calling  mtrr_if_init+0x0/0x77
> >> > initcall mtrr_if_init+0x0/0x77 returned 0 after 0 msecs
> >> > calling  ffh_cstate_init+0x0/0x31
> >> > initcall ffh_cstate_init+0x0/0x31 returned -1 after 0 msecs
> >> > initcall ffh_cstate_init+0x0/0x31 returned with error code -1
> >> > calling  acpi_pci_init+0x0/0x4a
> >> > ACPI: bus type pci registered
> >> > initcall acpi_pci_init+0x0/0x4a returned 0 after 0 msecs
> >>
> >> can you send out your config?
> >
> > Yes, sorry about omitting that.  Bad (not working) and good/working
> > are attached.
> >
> 
> can you check latest tip/master?

It still hangs for me.

> I tried that with your bad config on server test servers. all work well.

Can (or did) you try 2.6.26-rc5?

---
~Randy
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