(2013/09/03 21:44), Eric W. Biederman wrote:
> Yoshihiro YUNOMAE writes:
>
>> (2013/09/03 9:12), Eric W. Biederman wrote:
>> Then again looking at the output of the latest dmesg, it seems the IO
>> APIC
>> is initialized way before the tsc is calibrated. So I am not sure what
(2013/09/03 21:44), Eric W. Biederman wrote:
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
(2013/09/03 9:12), Eric W. Biederman wrote:
Then again looking at the output of the latest dmesg, it seems the IO
APIC
is initialized way before the tsc is calibrated. So I am not sure
Yoshihiro YUNOMAE writes:
> (2013/09/03 9:12), Eric W. Biederman wrote:
> Then again looking at the output of the latest dmesg, it seems the IO APIC
> is initialized way before the tsc is calibrated. So I am not sure what
> needed to get done or what interrupts are needed before the
(2013/09/03 9:12), Eric W. Biederman wrote:
Then again looking at the output of the latest dmesg, it seems the IO APIC
is initialized way before the tsc is calibrated. So I am not sure what
needed to get done or what interrupts are needed before the IO APIC gets
initialized.
(2013/09/03 9:12), Eric W. Biederman wrote:
Then again looking at the output of the latest dmesg, it seems the IO APIC
is initialized way before the tsc is calibrated. So I am not sure what
needed to get done or what interrupts are needed before the IO APIC gets
initialized.
The practical
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
(2013/09/03 9:12), Eric W. Biederman wrote:
Then again looking at the output of the latest dmesg, it seems the IO APIC
is initialized way before the tsc is calibrated. So I am not sure what
needed to get done or what interrupts are
Yoshihiro YUNOMAE writes:
> Hi Eric and Don,
>
> Sorry for the late reply.
>
> (2013/08/31 9:58), Eric W. Biederman wrote:
>> Don Zickus writes:
>>
>>> On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
Hi Don,
Sorry for the late reply.
(2013/08/22
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
Hi Eric and Don,
Sorry for the late reply.
(2013/08/31 9:58), Eric W. Biederman wrote:
Don Zickus dzic...@redhat.com writes:
On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
Hi Don,
Sorry for the late reply.
Hi Eric and Don,
Sorry for the late reply.
(2013/08/31 9:58), Eric W. Biederman wrote:
> Don Zickus writes:
>
>> On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
>>> Hi Don,
>>>
>>> Sorry for the late reply.
>>>
>>> (2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22,
Hi Eric and Don,
Sorry for the late reply.
(2013/08/31 9:58), Eric W. Biederman wrote:
Don Zickus dzic...@redhat.com writes:
On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
Hi Don,
Sorry for the late reply.
(2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22, 2013
Don Zickus writes:
> On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
>> Hi Don,
>>
>> Sorry for the late reply.
>>
>> (2013/08/22 22:11), Don Zickus wrote:
>> >On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
>> >>>So, I agree with Eric, let's remove the
Don Zickus dzic...@redhat.com writes:
On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
Hi Don,
Sorry for the late reply.
(2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
So, I agree with Eric, let's remove the
On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
> Hi Don,
>
> Sorry for the late reply.
>
> (2013/08/22 22:11), Don Zickus wrote:
> >On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
> >>>So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
On Tue, Aug 27, 2013 at 12:41:51PM +0900, Yoshihiro YUNOMAE wrote:
Hi Don,
Sorry for the late reply.
(2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
the code
Hi Don,
Sorry for the late reply.
(2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
the code simpler.
Thank you for commenting about my patch.
I didn't know you
Hi Don,
Sorry for the late reply.
(2013/08/22 22:11), Don Zickus wrote:
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
the code simpler.
Thank you for commenting about my patch.
I didn't know you
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
> >So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
> >the code simpler.
>
> Thank you for commenting about my patch.
> I didn't know you already have submitted the patches for this deadlock
> problem.
>
>
(2013/08/20 23:27), Don Zickus wrote:
On Tue, Aug 20, 2013 at 03:12:32AM -0700, Eric W. Biederman wrote:
Yoshihiro YUNOMAE writes:
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
The better fix for this would be to remove the
(2013/08/20 23:27), Don Zickus wrote:
On Tue, Aug 20, 2013 at 03:12:32AM -0700, Eric W. Biederman wrote:
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
The better fix for
On Thu, Aug 22, 2013 at 05:38:07PM +0900, Yoshihiro YUNOMAE wrote:
So, I agree with Eric, let's remove the disable_IO_APIC() stuff and keep
the code simpler.
Thank you for commenting about my patch.
I didn't know you already have submitted the patches for this deadlock
problem.
I can't
On Tue, Aug 20, 2013 at 03:12:32AM -0700, Eric W. Biederman wrote:
> Yoshihiro YUNOMAE writes:
>
> > Hi Ingo,
> >
> > Thank you for fixing typos!
> > OK, I'll fix them and rename to ioapic_zap_locks().
> >
> > Thank you again!
>
>
> The better fix for this would be to remove the
Yoshihiro YUNOMAE writes:
> Hi Ingo,
>
> Thank you for fixing typos!
> OK, I'll fix them and rename to ioapic_zap_locks().
>
> Thank you again!
The better fix for this would be to remove the disable_IO_APIC call from
crash_kexec.
I know last time it was investigated the kernel was very close
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
The better fix for this would be to remove the disable_IO_APIC call from
crash_kexec.
I know last time it was investigated
On Tue, Aug 20, 2013 at 03:12:32AM -0700, Eric W. Biederman wrote:
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com writes:
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
The better fix for this would be to remove the
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
Yoshihiro YUNOMAE
(2013/08/19 18:46), Ingo Molnar wrote:
* Yoshihiro YUNOMAE wrote:
Prevent crash_kexec() from deadlocking of ioapic_lock.
s/of/on
When crash_kexec() is executed
* Yoshihiro YUNOMAE wrote:
> Prevent crash_kexec() from deadlocking of ioapic_lock.
s/of/on
> When crash_kexec() is executed on a cpu, the cpu will get
> ioapic_lock in disable_IO_APIC(). So if the cpu gets NMI
> while locking ioapic_lock, a deadlock wiil happen. In
s/will
> this patch,
Prevent crash_kexec() from deadlocking of ioapic_lock. When crash_kexec()
is executed on a cpu, the cpu will get ioapic_lock in disable_IO_APIC().
So if the cpu gets NMI while locking ioapic_lock, a deadlock wiil happen.
In this patch, ioapic_lock is initialized before disable_IO_APIC().
To
Prevent crash_kexec() from deadlocking of ioapic_lock. When crash_kexec()
is executed on a cpu, the cpu will get ioapic_lock in disable_IO_APIC().
So if the cpu gets NMI while locking ioapic_lock, a deadlock wiil happen.
In this patch, ioapic_lock is initialized before disable_IO_APIC().
To
* Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com wrote:
Prevent crash_kexec() from deadlocking of ioapic_lock.
s/of/on
When crash_kexec() is executed on a cpu, the cpu will get
ioapic_lock in disable_IO_APIC(). So if the cpu gets NMI
while locking ioapic_lock, a deadlock wiil
Hi Ingo,
Thank you for fixing typos!
OK, I'll fix them and rename to ioapic_zap_locks().
Thank you again!
Yoshihiro YUNOMAE
(2013/08/19 18:46), Ingo Molnar wrote:
* Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com wrote:
Prevent crash_kexec() from deadlocking of ioapic_lock.
s/of/on
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