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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Subject: Re: ppc32 weirdness with gcc-4.0 in 2.6.11-rc4
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> -Memory: 255872k available (1788k kernel code, 976k data, 144k init, 0k highmem)
> +Memory: 255872k available (1776k kernel code, 0k data, 144k init, 0k highmem)

That is weird... (0k data)

> AGP special page: 0xcffff000
>  Calibrating delay loop... 830.66 BogoMIPS (lpj=4153344)
>  Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
> @@ -132,13 +132,7 @@
>  VFS: Mounted root (ext3 filesystem) readonly.
>  Freeing unused kernel memory: 144k init 4k chrp 8k prep
>  usb 3-2: new full speed USB device using ohci_hcd and address 2
> -hub 3-2:1.0: USB hub found
> -hub 3-2:1.0: 3 ports detected
> -usb 3-2.1: new low speed USB device using ohci_hcd and address 3
> -input: USB HID v1.10 Mouse [Logitech Apple Optical USB Mouse] on usb-0001:10:1b.0-2.1
> -usb 3-2.3: new full speed USB device using ohci_hcd and address 4
> -input: USB HID v1.10 Keyboard [Mitsumi Electric Apple Extended USB Keyboard] on usb-0001:10:1b.0-2.3
> -input: USB HID v1.10 Device [Mitsumi Electric Apple Extended USB Keyboard] on usb-0001:10:1b.0-2.3
> +usb 3-2: can't connect bus-powered hub to this port
>  EXT3 FS on hda5, internal journal
>  Adding 1048568k swap on /dev/hda3.  Priority:-1 extents:1
>  SCSI subsystem initialized
> 
> Note: "Memory: ... 0k data ..." !? Surely that can't be correct.

Not sure what's up, but it's probably something beeing miscompiled. Can
you check if the udelay/medlay loops are correct ?

Ben.