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xen-devel
Re: [Xen-devel] Re: [PATCH] x86: fix the potential of encounteringpanic
>>> Keir Fraser <keir.fraser@xxxxxxxxxxxxx> 12.12.08 10:37 >>>
>On 12/12/2008 09:24, "Ingo Molnar" <mingo@xxxxxxx> wrote:
>
>>>> note that we had to revert that eventually. The real solution is an
>>>> array of fixes from Maciej spread out over many months.
>>>
>>> Does it do more harm than good on some systems, or is it simply not a
>>> comprehensive fix?
>>
>> more harm than good - fixes some, breaks others. Have a look at the
>> latest upstream io_apic.c, that has it all settled down reasonably well.
>
>Thanks, Ingo.
>
>Jan: Do you agree we should revert the io_apic.c changes, but keep your
>addition of an explicit local_irq_enable() to __start_xen()?
No, please don't until Ingo clarified his indication of this having got
reverted (see my other response to him). I really can't see why properly
enabling/disabling interrupts in that code could do any harm.
Jan
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