[Xen-devel] floating-point arithmetic

[Anh Dinh <ug93tad@xxxxxxxxx>]

I compiled Xen with the flag:

-mfpmath=sse -msse2

so that I can use double variables in implementing a hypercall inside Xen hypervisor.Â

However, the kernel crashes (computer reboots) when I do a lot (about a thousand) of memory copying of double values in the kernel space, i.e.

unsigned char* pt = xmalloc(unsigned char, sizeof(double));Â

memcpy(pt,&value,sizeof(double)); Â //<---- CRASHED HERE

...//do something with the variable

xfree(pt);Â

Would appreciate any suggestion.Â

Thanks,

Anh.Â

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