From: Pavel Pisa <p...@cmp.felk.cvut.cz> Protection by rtems_interrupt_disable() is incompatible with SMP build. Actual page table entries manipulation function does not need locking and disabling cache and can be run concurrently even on multiple CPUs as long as changes do not modify same region. If the function is called from more threads/CPUs to modify same region with different mapping options concurrently then there is problem at another level of virtual address space management and has to be solved by mutex or other locking at that level. --- c/src/lib/libbsp/arm/shared/arm-cp15-set-ttb-entries.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/c/src/lib/libbsp/arm/shared/arm-cp15-set-ttb-entries.c b/c/src/lib/libbsp/arm/shared/arm-cp15-set-ttb-entries.c index f650009..c2be0f5 100644 --- a/c/src/lib/libbsp/arm/shared/arm-cp15-set-ttb-entries.c +++ b/c/src/lib/libbsp/arm/shared/arm-cp15-set-ttb-entries.c @@ -85,13 +85,5 @@ uint32_t arm_cp15_set_translation_table_entries( uint32_t section_flags ) { - rtems_interrupt_level level; - uint32_t section_flags_of_first_entry; - - rtems_interrupt_disable(level); - section_flags_of_first_entry = - set_translation_table_entries(begin, end, section_flags); - rtems_interrupt_enable(level); - - return section_flags_of_first_entry; + return set_translation_table_entries(begin, end, section_flags); } -- 1.9.1 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel