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Date: Mon, 21 May 2007 10:00:31 -0500
From: Jason Wessel <jason.wessel@windriver.com>
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Subject: [Qemu-devel] MIPS64 problem with ethernet
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To: qemu-devel@nongnu.org


The ethernet device does not come up correctly on a 64 MIPS target with 
a 64 bit kernel.

I narrowed it down a bit, so I thought I might mention it.

If I add to the kernel the line:
    printk("\nTest ~0UL == %lx\n", (~0UL));

It will print correctly on the real HW:
Test ~0UL == ffffffffffffffff

In qemu-system-mips64 it will only print:
Test ~0UL ==

The ethernet fails due to the failure of the computing of the test 
kcalloc() found in slab.h.
if (n != 0 && size > ULONG_MAX / n)

Where n == 16,  size == 8, and ULONG_MAX == (~0UL).  I suspect some low 
level debugging of which op code translation is at fault would be next...

Jason.