From: shiraz.linux.kernel@gmail.com (shiraz hashim)
To: linux-arm-kernel@lists.infradead.org
Subject: reboot not working on linux-2.6.37 for ARMv7
Date: Fri, 11 Feb 2011 17:01:06 +0530 [thread overview]
Message-ID: <AANLkTi=FCJr-0aF0LG92PC4Q7J4R5PDU7xobnvCgDHy8@mail.gmail.com> (raw)
Hi,
I am using linux-2.6.37 on our ARM Cortex A9 (dual core) SMP platform
with PL310 as Level 2 cache. We observe that on reboot the control
is not able to reach to the arch_reset.
The problem happens when L1 cache is disabled in
arm_machine_restart, through cpu_proc_fin() and L2 cache is flushed.
L2 cache flushing takes a spinlock and our platform doesnot have monitor
support at L2 thus failing strex instruction. The strex (and hence spin locks)
behave sanely when L1 is enabled as monitor associated with SCU takes
care of it.
--
regards
Shiraz Hashim
next reply other threads:[~2011-02-11 11:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-11 11:31 shiraz hashim [this message]
2011-02-11 12:03 ` reboot not working on linux-2.6.37 for ARMv7 Russell King - ARM Linux
2011-02-11 12:10 ` Santosh Shilimkar
2011-02-11 12:20 ` Russell King - ARM Linux
2011-02-11 12:23 ` Santosh Shilimkar
2011-02-12 16:15 ` viresh kumar
2011-02-12 16:21 ` Russell King - ARM Linux
2011-02-12 17:23 ` shiraz hashim
2011-02-12 17:32 ` Russell King - ARM Linux
2011-02-12 17:37 ` shiraz hashim
2011-02-13 3:56 ` Rabin Vincent
2011-02-14 3:37 ` shiraz hashim
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