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SubjectRe: [Bug 10872] x86_64 boot hang when CONFIG_NUMA=n
On Sun, Jun 15, 2008 at 9:35 AM, Randy Dunlap <randy.dunlap@oracle.com> wrote:
> On Sat, 14 Jun 2008 22:12:04 +0200 (CEST) Rafael J. Wysocki wrote:
>
>> This message has been generated automatically as a part of a report
>> of recent regressions.
>>
>> The following bug entry is on the current list of known regressions
>> from 2.6.25. Please verify if it still should be listed.
>>
>>
>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10872
>> Subject : x86_64 boot hang when CONFIG_NUMA=n
>> Submitter : Randy Dunlap <randy.dunlap@oracle.com>
>> Date : 2008-06-05 21:50 (10 days old)
>> References : http://marc.info/?l=linux-kernel&m=121270308607116&w=4
>> http://lkml.org/lkml/2008/6/11/355
>> Handled-By : Yinghai Lu <yhlu.kernel@gmail.com>
>
> Yes, still happens for me on 2.6.26-rc6-git2.
>

please send out whole boot log with numa on and numa off
and boot with debug

please apply attached debug patch too.

YH
Index: linux-2.6/drivers/pci/setup-bus.c
===================================================================
--- linux-2.6.orig/drivers/pci/setup-bus.c
+++ linux-2.6/drivers/pci/setup-bus.c
@@ -537,6 +537,36 @@ void __ref pci_bus_assign_resources(stru
}
EXPORT_SYMBOL(pci_bus_assign_resources);

+static void pci_bus_dump_res(struct pci_bus *bus)
+{
+ int i;
+
+ for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
+ struct resource *res = bus->resource[i];
+ if (!res)
+ continue;
+
+ printk(KERN_INFO "bus: %02x index %x %s: [%llx, %llx]\n", bus->number, i, (res->flags & IORESOURCE_IO)? "io port":"mmio", res->start, res->end);
+ }
+}
+
+static void pci_bus_dump_resources(struct pci_bus *bus)
+{
+ struct pci_bus *b;
+ struct pci_dev *dev;
+
+
+ pci_bus_dump_res(bus);
+
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ b = dev->subordinate;
+ if (!b)
+ continue;
+
+ pci_bus_dump_resources(b);
+ }
+}
+
void __init
pci_assign_unassigned_resources(void)
{
@@ -552,4 +582,9 @@ pci_assign_unassigned_resources(void)
pci_bus_assign_resources(bus);
pci_enable_bridges(bus);
}
+
+ /* dump the resource on buses */
+ list_for_each_entry(bus, &pci_root_buses, node) {
+ pci_bus_dump_resources(bus);
+ }
}Index: linux-2.6/drivers/pci/probe.c
===================================================================
--- linux-2.6.orig/drivers/pci/probe.c
+++ linux-2.6/drivers/pci/probe.c
@@ -275,6 +275,7 @@ static void pci_read_bases(struct pci_de
}
res->start = l64 & PCI_BASE_ADDRESS_MEM_MASK;
res->end = res->start + sz64;
+ printk(KERN_INFO "PCI: %s reg %x 64bit mmio: [%llx, %llx]\n", pci_name(dev), reg, res->start, res->end);
#else
if (sz64 > 0x100000000ULL) {
printk(KERN_ERR "PCI: Unable to handle 64-bit "
@@ -290,6 +291,8 @@ static void pci_read_bases(struct pci_de
res->end = sz;
}
#endif
+ } else {
+ printk(KERN_INFO "PCI: %s reg %x %s: [%llx, %llx]\n", pci_name(dev), reg, (res->flags & IORESOURCE_IO)? "io port":"32bit mmio", res->start, res->end);
}
}
if (rom) {
@@ -357,6 +360,7 @@ void __devinit pci_read_bridge_bases(str
res->start = base;
if (!res->end)
res->end = limit + 0xfff;
+ printk(KERN_INFO "PCI: bridge %s io port: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
}

res = child->resource[1];
@@ -368,6 +372,7 @@ void __devinit pci_read_bridge_bases(str
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
res->start = base;
res->end = limit + 0xfffff;
+ printk(KERN_INFO "PCI: bridge %s 32bit mmio: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
}

res = child->resource[2];
@@ -402,6 +407,7 @@ void __devinit pci_read_bridge_bases(str
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM | IORESOURCE_PREFETCH;
res->start = base;
res->end = limit + 0xfffff;
+ printk(KERN_INFO "PCI: bridge %s %sbit mmio pref: [%llx, %llx]\n", pci_name(dev), (res->flags & PCI_PREF_RANGE_TYPE_64)?"64":"32",res->start, res->end);
}
}
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