On Thu, Jan 27, 2011 at 06:14:56PM +0000, Catalin Marinas wrote:
> On 17 January 2011 19:24, Russell King - ARM Linux
> <li...@arm.linux.org.uk> wrote:
> > Rather than turning off CPU domain switching when the build architecture
> > includes ARMv6K, thereby causing problems for ARMv6-supporting kernels,
> > turn it on when it's required to support a CPU architecture.
>
> (sorry, I'm well behind list messages, didn't reply earlier)
>
> Does it mean that we get domains enabled even for ARMv7 when ARMv6 is
> built in the same kernel? The side effect is that user read-only
> addresses are writable by the kernel and SWP emulation no longer
> works.
It means that a kernel with ARMv6 through to ARMv7 will have CPU
domains enabled. So maybe we want:
config CPU_32v6
select CPU_USE_DOMAINS if !CPU_V6K && MMU
instead?
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