From: balbi@ti.com (Felipe Balbi)
To: linux-arm-kernel@lists.infradead.org
Subject: OMAP4 panda gets stuck during reboot
Date: Wed, 5 Jan 2011 16:08:01 +0200 [thread overview]
Message-ID: <20110105140801.GC2304@legolas.emea.dhcp.ti.com> (raw)
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
next reply other threads:[~2011-01-05 14:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-05 14:08 Felipe Balbi [this message]
2011-01-05 14:14 ` OMAP4 panda gets stuck during reboot Santosh Shilimkar
2011-01-05 14:18 ` Felipe Balbi
2011-01-05 14:22 ` Santosh Shilimkar
2011-01-05 14:26 ` Felipe Balbi
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