Messages in this thread | | | Date | Tue, 24 Feb 2009 08:53:25 -0500 | Subject | Re: pci 0000:01:00.0: BAR 0: can't allocate resource | From | George Rapp <> |
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[Re-sending; forgot to turn off HTML and lkml bounced my original ...]
On Tue, Feb 24, 2009 at 8:42 AM, George Rapp <george.rapp@gmail.com> wrote: > > On Sun, Feb 22, 2009 at 10:50 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: >> >> Can you also show the contents of /proc/iomem? > > Linus - > > Here it is: > > [root@newbackend ~]# cat /proc/iomem > 00000000-0009fbff : System RAM > 0009fc00-0009ffff : reserved > 000a0000-000bffff : Video RAM area > 000c0000-000ccfff : Video ROM > 000d0000-000d47ff : Adapter ROM > 000f0000-000fffff : reserved > 000f0000-000fffff : System ROM > 00100000-1bffffff : System RAM > 00400000-006d8200 : Kernel code > 006d8201-0088aa97 : Kernel data > 008f8000-009ed14b : Kernel bss > 01382000-01382fff : Local APIC > d8000000-e7ffffff : PCI Bus 0000:01 > d8000000-d801ffff : 0000:01:00.0 > e8000000-efffffff : 0000:00:00.0 > f0000000-f1ffffff : PCI Bus 0000:01 > f1000000-f100ffff : 0000:01:00.0 > f2000000-f201ffff : 0000:00:0b.0 > f3000000-f307ffff : 0000:00:0c.0 > f4000000-f40001ff : 0000:00:0c.0 > f4000000-f40001ff : sata_sil > f4001000-f400107f : 0000:00:0b.0 > ffff0000-ffffffff : reserved > > > >> >> It does look like it's this one: >> >> pci 0000:01:00.0: BAR 0: can't allocate mem resource [0xe0000000-0xe7ffffff] >> >> and the problem is that the kernel cannot find enough space to map the >> required 128MB region for the graphics aperture. >> >> Which is really odd, because the bridge to that PCI bus#1 is this: >> >> pci 0000:00:01.0: PCI bridge, secondary bus 0000:01 >> pci 0000:00:01.0: IO window: 0x9000-0x9fff >> pci 0000:00:01.0: MEM window: 0xf0000000-0xf1ffffff >> pci 0000:00:01.0: PREFETCH window: 0x000000d8000000-0x000000e7ffffff >> >> and that prefetch window is _huge_. Certainly big enough to fit BAR 0, but >> maybe there is something else in it. >> >> Linus > > > \ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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