[bryan at staidm.org: [PATCH] ppc32 copy_to_user dcbt fixup]

[Olof Johansson]

linas at austin.ibm.com wrote:
> So,
>
> Does the problem described below affect the ppc64 cpu's?

(I assume you mean the ppc64 kernel, not cpus; some of our 64-bit
machines can run 32-bit kernels and would be affected there :-)

Besides that: No, there's no cache prefetch in the loops on ppc64. The
only places where dcbt is used is to fetch the first block in memcpy and
__copy_tofrom_user.


-Olof


--
Olof Johansson                                        Office: 4F005/905
Linux on Power Development                            IBM Systems Group
Email: olof at austin.ibm.com                          Phone: 512-838-9858
All opinions are my own and not those of IBM

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