Re: PAGE_KERNEL_RO

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On Wed, 2011-01-12 at 16:07 -0800, Andrew Morton wrote:
> drivers/firewire/ohci.c now needs PAGE_KERNEL_RO, but many
> architectures don't implement it.  Broke my sparc64 build.

Some architectures actually cannot implement it even... at least some
variants of powerpc MMUs don't have a combination of protection bits
that allow a kernel-only RO mapping (yeah odd).

Cheers,
Ben.


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