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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-03-08 16:56:49 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-03-09 21:11:10 +0100 |
| commit | 32f0f11a68d3aa521f0398c9b8eec3d47f114c5e (patch) | |
| tree | 672d1bd028d0e8c625dbe75db318050528f7c4b4 /cpukit/score/src | |
| parent | bsp/altera-cyclone-v: fix the creation of reserved memory regions (diff) | |
| download | rtems-32f0f11a68d3aa521f0398c9b8eec3d47f114c5e.tar.bz2 | |
SMP: Fix start multitasking for some targets
The previous SMP multitasking start assumed that the initial heir thread of a
processor starts execution in _Thread_Handler(). The _Thread_Handler() sets
the interrupt state explicitly by _ISR_Set_level() before it calls the thread
entry. Under certain timing conditions, processors may perform an initial
context switch to a thread which already executes its thread body (see
smptests/smpstart01). In this case, interrupts are disabled after the context
switch on targets which do not save/restore the interrupt state during a
context switch (aarch64, arm, and riscv).
Close #4627.
Diffstat (limited to 'cpukit/score/src')
| -rw-r--r-- | cpukit/score/src/threadstartmultitasking.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cpukit/score/src/threadstartmultitasking.c b/cpukit/score/src/threadstartmultitasking.c index 5cc2051be4..d97d2e0c82 100644 --- a/cpukit/score/src/threadstartmultitasking.c +++ b/cpukit/score/src/threadstartmultitasking.c @@ -64,6 +64,9 @@ void _Thread_Start_multitasking( void ) #if defined(_CPU_Start_multitasking) _CPU_Start_multitasking( &heir->Registers ); #elif defined(RTEMS_SMP) +#if CPU_ENABLE_ROBUST_THREAD_DISPATCH == TRUE +#error "The CPU port has to provide _CPU_Start_multitasking()" +#endif { Context_Control trash; |