Benjamin Herrenschmidt wrote:
> On Fri, 2007-10-26 at 15:05 +0400, Valentine Barshak wrote:
>> It's not enough. We need to enable APU instruction broadcast for
>> EP(x)
>> (call __init_fpu_44x in arch/powerpc/kernel/cpu_setup_44x.S).
>> Or do you suggest to or-in FPU feature bit and enable APUIB l
On Fri, 2007-10-26 at 15:05 +0400, Valentine Barshak wrote:
>
> It's not enough. We need to enable APU instruction broadcast for
> EP(x)
> (call __init_fpu_44x in arch/powerpc/kernel/cpu_setup_44x.S).
> Or do you suggest to or-in FPU feature bit and enable APUIB later,
> not
> in the cpu_setup
Benjamin Herrenschmidt wrote:
> On Thu, 2007-10-25 at 22:16 +0400, Valentine Barshak wrote:
>> PowerPC 440EP(x) 440GR(x) processors have the same PVR values, since
>> they have identical cores. However, FPU is not supported on GR(x) and
>> enabling APU instruction broadcast in the CCR0 register (to
On Thu, 2007-10-25 at 22:16 +0400, Valentine Barshak wrote:
> PowerPC 440EP(x) 440GR(x) processors have the same PVR values, since
> they have identical cores. However, FPU is not supported on GR(x) and
> enabling APU instruction broadcast in the CCR0 register (to enable FPU)
> may cause unpredict
PowerPC 440EP(x) 440GR(x) processors have the same PVR values, since
they have identical cores. However, FPU is not supported on GR(x) and
enabling APU instruction broadcast in the CCR0 register (to enable FPU)
may cause unpredictable results. There's no safe way to detect FPU
support at runtime. T
