On 08/23/2010 10:47 AM, Steve Longerbeam wrote:
On 08/22/2010 05:20 PM, Mike Frysinger wrote:
as it stands, this breaks all non-arm NOMMU ports. the patch will
need to be
broken up into arm-specific and arm-independent parts.
ok, I can do that.
the common code changes will need justification as to why they exist
at all.
we're doing MPU on Blackfin/nommu today without any of these. we
support
pretty much all the same features of a MMU system short of virtual
memory --
4k pages, RWX granularity, process to process protection, process to
kernel
protection (include kernel modules), kernel XIP, and userspace XIP.
further, why did you go with CONFIG_CPU_CP15_MPU ? there is already a
CONFIG_MPU option that is used in common nommu code.
which tree has CONFIG_MPU, and the MPU support for blackfin? There is
no such thing in the 888 uclinux release tree.
sorry, I see CONFIG_MPU under blackfin in the 888 release.
I'm not familiar with the blackfin arch, but my patches of course are
specific to ARM MPU's.
Steve
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