Hi,
It seems like there's a bug on flush_pmd_entry() for multicore ARM CPUs.
I'm testing 2.6.37 with pandaboard and when running "reboot" it gets
stuck on:
asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pmd"
: : "r" (pmd) : "cc");
I added a few printk()s around the code to find the specific spot where
the reset sequence was getting stuck and here's the output:
[ 112.497253] ===> kernel_restart (line 312)
[ 112.501525] ===> kernel_restart_prepare (line 294)
[ 112.506561] ===> device_shutdown (line 1661)
[ 112.511871] ===> device_shutdown (line 1692)
[ 112.516387] ===> sysdev_shutdown (line 323)
[ 112.520782] ===> sysdev_shutdown (line 349)
[ 112.525146] ===> kernel_restart_prepare (line 299)
[ 112.530181] Restarting system.
[ 112.533386] ===> machine_restart (line 254)
[ 112.537750] ===> machine_shutdown (line 232)
[ 112.542236] ===> machine_shutdown (line 236)
[ 112.546722] ===> arm_machine_restart (line 96)
[ 112.551391] ===> setup_mm_for_reboot (line 1059)
[ 112.556213] ===> setup_mm_for_reboot (line 1066)
[ 112.561035] ===> setup_mm_for_reboot (line 1071)
[ 112.565856] ===> flush_pmd_entry (line 522)
What could it be ? Any more debugging I could do to help ?
--
balbi
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
