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| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2023-02-24 16:25:12 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2023-02-27 12:31:48 -0600 |
| commit | d08dfc3d63543b0dd2f4a4e26966b22118c207a0 (patch) | |
| tree | 5703b584e4c7cea32cef0747921e373379a50cf2 | |
| parent | waf: Update to waf 2.0.25 (diff) | |
| download | rtems-d08dfc3d63543b0dd2f4a4e26966b22118c207a0.tar.bz2 | |
bsps/aarch64: Disable interrupts during MMU remap
Interrupts must be disabled during MMU remapping since the majority of
RTEMS including interrupts expects normal memory mapping semantics such
as unaligned accesses.
| -rw-r--r-- | bsps/aarch64/shared/mmu/vmsav8-64.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/bsps/aarch64/shared/mmu/vmsav8-64.c b/bsps/aarch64/shared/mmu/vmsav8-64.c index 190a05f7d5..270b9319ad 100644 --- a/bsps/aarch64/shared/mmu/vmsav8-64.c +++ b/bsps/aarch64/shared/mmu/vmsav8-64.c @@ -47,12 +47,16 @@ rtems_status_code aarch64_mmu_map( ) { rtems_status_code sc; + ISR_Level level; uint64_t max_mappable = 1LLU << aarch64_mmu_get_cpu_pa_bits(); if ( addr >= max_mappable || (addr + size) > max_mappable ) { return RTEMS_INVALID_ADDRESS; } + /* Disable interrupts so they don't run while the MMU is disabled */ + _ISR_Local_disable( level ); + aarch64_mmu_disable(); sc = aarch64_mmu_map_block( (uint64_t *) bsp_translation_table_base, @@ -70,5 +74,7 @@ rtems_status_code aarch64_mmu_map( _AARCH64_Instruction_synchronization_barrier(); aarch64_mmu_enable(); + _ISR_Local_enable( level ); + return sc; } |