[RTEMS Project] #2775: ARM CP15 arm_cp15_set_translation_table_entries fails if TTB in read-only memory

[RTEMS trac]

#2775: ARM CP15 arm_cp15_set_translation_table_entries fails if TTB in read-only
memory
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 Reporter:  chrisj  |      Owner:
     Type:  defect  |     Status:  new
 Priority:  normal  |  Milestone:  4.12
Component:  libcpu  |    Version:  4.12
 Severity:  normal  |   Keywords:  ARM
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 If the TTB is held in the text section and the section is set to read-
 only, and cached when booting no section change happen at run time because
 the table cannot be written too to change. The table cannot be changed
 unless the MMU is disabled.

 I suggest the MMU be disabled, the table updated and then the MMU enabled.

 Note, the issue only shows up on real hardware, qemu does not complain.

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Ticket URL: <http://devel.rtems.org/ticket/2775>
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