Hello
We are seeing the following lines in our /var/log/kern file. and I am wondering why IO window is disabled for those pci bridges and if it is necessary to enable them.
Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: f4000000-f7ffffff Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:07:00.0 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: f4000000-f7ffffff Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:07:01.0 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: disabled. Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:06:00.0 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: f4000000-f7ffffff Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:06:00.3 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: disabled. Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:00:02.0 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: f2000000-f7ffffff Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:01:00.0 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: fc400000-fc5fffff Nov 1 15:19:18 Song kernel: PREFETCH window: d8000000-d80fffff Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:01:00.2 Nov 1 15:19:18 Song kernel: IO window: disabled. Nov 1 15:19:18 Song kernel: MEM window: disabled. Nov 1 15:19:18 Song kernel: PREFETCH window: disabled. Nov 1 15:19:18 Song kernel: PCI: Bridge: 0000:00:03.0 Nov 1 15:19:18 Song kernel: IO window: disabled.