On 16-May-12, at 10:46 AM, James Bottomley wrote:
Wow, lib/mpi/ is a complete horror: it's full of hand crafted asm
code.
The error in this case appears to be that umul_ppm() is implemented as
an xmpyu instruction. That's a floating point instruction. We
deliberately compile the kernel with floating point disabled because
we
don't want to save and restore the floating point register file on
each
context switch, hence the operand constraints are unsatisfiable.
I haven't tried this but I think the parisc implementation of umul_ppmm
can be deleted. There is a generic version in the file.
Dave
--
John David Anglin dave.ang...@bell.net
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