[RTEMS Project] #2775: ARM CP15 arm_cp15_set_translation_table_entries fails if TTB in read-only memory
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Tue Aug 9 03:32:59 UTC 2016
#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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