On 12/16/2017 02:31 PM, Peng Fan wrote:
On Fri, Dec 15, 2017 at 05:53:43PM +0800, Peng Fan wrote:
Hi Philippe,
On Thu, Dec 14, 2017 at 05:39:10PM +0100, Philippe Gerum wrote:
On 12/14/2017 11:23 AM, Peng Fan wrote:
Hi,
I am trying xenomai on ARM64 with GICV3, but met the following error.
I have no good idea on this. I disabled KVM/CPUFREQ/CPUIDLE, enabled DEBUG.
I use ipipe-core-4.9.51-arm64-3.patch with these patches applied from 4.9.y
branch
"
ipipe: printk: fix unprotected check for deferrable output
ipipe: drop obsolete ipipe_probe_kernel*() calls
lib/ipipe: make dump_stack() domain-aware
ipipe: gicv3: [v3] Enable interrupt pipelining.
ipipe: add back migration notifiers
"
Do you know what this issue maybe related about?
Log:
[ 20.236548] dhd_module_init out
[ 20.239689] ALSA device list:
[ 20.242750] #0: amix-audio-sai
[ 20.246170] Unable to handle kernel NULL pointer dereference at virtual addr0
[ 20.254331] mm_pgd = ffff000009469000, hw_pgd = ffff8000015a4000
[ 20.260341] [00000000] *pgd=00000008bfffe003, *pud=00000008bfffd003, *pmd=000
[ 20.268640] Internal error: Oops: 86000004 [#1] PREEMPT SMP
Some irqchip driver enabled in your kernel is not aware of interrupt
pipelining, i.e. not handled by the I-pipe patch. The
->irq_hold/release() handlers for this interrupt controller are likely
missing.
Thanks. It is a dummy irqchip driver used for wakeup causes this issue.
I still have a question on my platform. with "maxcpus=1", kernel could runs
into login shell. But if using default 4 CPUs, kernel stops at:
[ 4.305046] audit: initializing netlink subsys (disabled)
[ 4.305111] audit: type=2000 audit(4.032:1): initialized
[ 4.305526] [Xenomai] scheduling class idle registered.
[ 4.305530] [Xenomai] scheduling class rt registered.
---- Stops here.
>From the code, I found it stops at
/*
* Ensure all CPUs consumed the IPI to avoid
* running __ipipe_cpu_sync prematurely. This
* usually resolves the deadlock reason too.
*/
while (!cpumask_equal(&online, &__ipipe_cpu_pass_map))
cpu_relax();
Seems online not equal to __ipipe_cpu_pass_map. I am not sure IPI is send
to other cores, I am using GICV3. Still debugging.
Any hints?
Resolved. It is my arm trusted firmware issue, not configured ipi critical
correctly.
is your ATF in some public repository (ie, are you upstreaming it)? just
curious...
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