Hi all,
We have the problem that (hot-)rebooting our Xenomai system fails every 1
out of 10 times.
The system is an ARM iMX6Solo (Cortex-A9) running Xenomai 2.6.2.1 and
kernel 3.0 (freescale branch).
When the system hangs at reboot, it is in an infinite loop in the Xenomai
atomic exchange implementation, with STREX always returning 1:
__xnarch_xchg
S:0xC0094B2C : ADD r3,r6,#0x890
S:0xC0094B30 : LDREX r2,[r3]
S:0xC0094B34 : STREX r1,r9,[r3]
S:0xC0094B38 : TEQ r1,#0
S:0xC0094B3C : BNE {pc}-0xc ; 0xc0094b30
Does anyone know what is causing the STREX to always return 0 and why it
might get into this state?
Is there a workaround for this problem?
Any help is appreciated!
Thanks,
Henri
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