diff options
| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2023-04-17 17:05:03 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2023-04-18 08:28:35 -0500 |
| commit | 7e119562ae48d170604d3c82dcf2425a0a1ae3cd (patch) | |
| tree | 9e0731844e66fe669bda8024810c32c0b00278f8 /bsps/aarch64/shared/mmu/vmsav8-64.c | |
| parent | spec: Silence benign warnings in 3rd party code (diff) | |
| download | rtems-7e119562ae48d170604d3c82dcf2425a0a1ae3cd.tar.bz2 | |
bsps/aarch64: Enable MMU during remaps
The MMU must be enabled during mapping changes and TLB invalidations.
When this is not the case, TLB updates do not occur correctly in all
cases. This is especially apparent when changing a block entry to a
table entry when remapping small memory ranges in an otherwise
contiguous block.
Diffstat (limited to '')
| -rw-r--r-- | bsps/aarch64/shared/mmu/vmsav8-64.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/bsps/aarch64/shared/mmu/vmsav8-64.c b/bsps/aarch64/shared/mmu/vmsav8-64.c index 270b9319ad..c426dec900 100644 --- a/bsps/aarch64/shared/mmu/vmsav8-64.c +++ b/bsps/aarch64/shared/mmu/vmsav8-64.c @@ -54,10 +54,12 @@ rtems_status_code aarch64_mmu_map( return RTEMS_INVALID_ADDRESS; } - /* Disable interrupts so they don't run while the MMU is disabled */ + /* + * Disable interrupts so they don't run while the MMU tables are being + * modified. + */ _ISR_Local_disable( level ); - aarch64_mmu_disable(); sc = aarch64_mmu_map_block( (uint64_t *) bsp_translation_table_base, 0x0, @@ -72,7 +74,6 @@ rtems_status_code aarch64_mmu_map( ); _AARCH64_Data_synchronization_barrier(); _AARCH64_Instruction_synchronization_barrier(); - aarch64_mmu_enable(); _ISR_Local_enable( level ); |