On 06/07/2013 04:53 PM, Benjamin Herrenschmidt wrote:
On Fri, 2013-06-07 at 15:46 +0800, tiejun.chen wrote:
On 06/07/2013 03:41 PM, Benjamin Herrenschmidt wrote:
Another question...
Do you guys happen to have a patch to emulate fsqrt in the kernel ?
Seems this is already emulated:
arch/powerpc/math-emu/fsqrt.c
You can enable CONFIG_MATH_EMULATION to try.
Is math emu expected to work at all on top of a real FPU ? I though it
didn't ... maybe I'm wrong.
As I understand often the real FPU can't support all float instructions, so we
have to enable this to emulate those unsupported float instructions in that
scenario.
Tiejun
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