Bad news...
My system doesn't boot (hangup) with your latest set of patches.
Fusion MPT SAS driver initialization failed on some devices.
Please see below
...
Fusion MPT SAS Host driver 3.04.12
mptsas 0000:09:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
mptsas 0000:09:00.0: BAR 1: can't reserve [mem 0x00510000-0x00513fff 64bit]
mptbase: ioc0: ERROR - pci_request_selected_regions() with MEM failed
mptsas 0000:0a:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
mptsas 0000:0a:00.0: BAR 1: can't reserve [mem 0x00610000-0x00613fff 64bit]
mptbase: ioc1: ERROR - pci_request_selected_regions() with MEM failed
...
This problem disappear when I revert the patch 6/9, and my system
can boot. But I found igb driver initialization failed on some
devices even in this case. Please see below
...
igb 0000:08:00.0: BAR 0: can't reserve [mem 0x00100000-0x0011ffff]
igb 0000:08:00.0: PCI INT A disabled
igb: probe of 0000:08:00.0 failed with error -16
igb 0000:08:00.1: PCI INT B -> GSI 18 (level, low) -> IRQ 18
igb 0000:08:00.1: BAR 0: can't reserve [mem 0x00140000-0x0015ffff]
igb 0000:08:00.1: PCI INT B disabled
igb: probe of 0000:08:00.1 failed with error -16
...
that looks werid, without patch 6/9 should only have pci bridge res shrink problem with your last test?
maybe we need keep that feature default to be disabled.
please try
---
drivers/pci/setup-bus.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
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
@@ -918,8 +918,7 @@ static void pci_bus_dump_resources(struc
* second try will clear small leaf bridge res
* third try will clear related bridge: some aggressive
*/
-/* assume we only have 4 level bridges, so only try 5 times */
-int pci_try_num = 5;
+int pci_try_num = 1;
void __init
pci_assign_unassigned_resources(void)
{