Re: [Xen-devel] 2.4.26-xen0 unresolved symbol _mmx_memcpy in USB modules

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

My suspicion is that you have inconsistent build configurations for
your base kernel and USB modules. The latter is being built with
CONFIG_X86_USE_3DNOW, and therefore expects _mmx_memcpy. The base
kernel must be being built without CONFIG_X86_USE_3DNOW, as otherwise
that function is correctly EXPORT_SYMBOL()'ed by
arch/xen/kernel/i386-ksyms.c. 

 -- Keir

> Hi,
> 
> I've been playing with the 2.4.26 and 2.4.27 xen0 kernels, and at some
> point I noticed that I was unable to load the USB modules anymore because
> of an unresolved _mmx_memcpy symbol...A bit of fiddling with my settings 
> showed that when I build all my USB
> modules in the kernel, the problem goes away, or alternately, if I switch
> back from Athlon to Pentium II cpu (which was my original setting).
> So for now I'm using the Pentium II as my CPU selection, but I was just
> wondering if this is a known problem, or if I stumbled across something
> new :-) ?
> Warm regards,
> Mark.
> 
> 
> 
> 
> 
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