[PATCH 1/4] ARM: Remove the domain switching on ARMv6k/v7 CPUs

[Russell King - ARM Linux]

On Thu, May 20, 2010 at 03:30:04PM +0100, Catalin Marinas wrote:
> The user pages access rights are also modified for kernel read-only
> access rather than read/write so that the copy-on-write mechanism still
> works. CPU_USE_DOMAINS gets disabled only if HAS_TLS_REG is defined
> since writing the TLS value to the high vectors page isn't possible.

When FIQ handlers are installed/removed, the vector page is also written,
so the above restriction is incompatible with FIQ support.

Do we want to tell people that they can't use FIQs without domain support?