Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1472400

Re: [PATCH] generic: Add the exception case checking routine for ppi interrupt

Show all headers | View raw

在 2016/8/30 16:50, Marc Zyngier 写道:
> On 30/08/16 05:17, MaJun wrote:
>> From: Ma Jun <majun258@huawei.com>
>>
>> During system booting, if the interrupt which has no action registered
>> is triggered, it would cause system panic when try to access the
>> action member.
> 
> And why would that interrupt be enabled? If you enable a PPI before
> registering a handler, you're doing something wrong.
> 

Actually,the problem described above happened during the capture kernel booting.

In my system, sometimes there is a pending physical timer interrupt(30)
when the first kernel panic and the status is kept until the capture kernel booting.

So, this interrupt will be handled during capture kernel booting.

Becasue we use virt timer interrupt but not physical timer interrupt in capture kernel,
the interrupt 30 has no action handler.

Besides, I think we need to do exception check in this function just
like "handle_fasteoi_irq" does.

Thanks
MaJun

> Thanks,
> 
> 	M.
> 

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH] generic: Add the exception case checking routine for ppi interrupt MaJun <majun258@huawei.com> - 2016-08-30 06:20 +0200
  Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Marc Zyngier <marc.zyngier@arm.com> - 2016-08-30 11:00 +0200
    Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt "majun (F)" <majun258@huawei.com> - 2016-08-30 12:40 +0200
      Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Marc Zyngier <marc.zyngier@arm.com> - 2016-08-30 13:10 +0200
        Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Mark Rutland <mark.rutland@arm.com> - 2016-08-30 13:30 +0200
          Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt "majun (F)" <majun258@huawei.com> - 2016-08-31 08:40 +0200
            Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Marc Zyngier <marc.zyngier@arm.com> - 2016-08-31 10:40 +0200
              Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt "majun (F)" <majun258@huawei.com> - 2016-09-01 10:20 +0200
                Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Marc Zyngier <marc.zyngier@arm.com> - 2016-09-01 11:10 +0200
                Re: [PATCH] generic: Add the exception case checking routine for  ppi interrupt Thomas Gleixner <tglx@linutronix.de> - 2016-09-02 15:20 +0200
                Re: [PATCH] generic: Add the exception case checking routine for ppi  interrupt Marc Zyngier <marc.zyngier@arm.com> - 2016-09-02 17:50 +0200
                [tip:irq/core] genirq: Robustify handle_percpu_devid_irq() tip-bot for Thomas Gleixner <tipbot@zytor.com> - 2016-09-02 18:20 +0200

csiph-web