Re: [Xen-devel] [PATCH] xen/arm: Fix rtds scheduler for arm

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 30/01/15 15:46, Julien Grall wrote:
> Hello Denys,
>
> On 30/01/15 15:40, Denis Drozdov wrote:
>> From: denys drozdov <denys.drozdov@xxxxxxxxxxxxxxx>
>>
>> Update RT scheduler to run on arm platform
> You need to give more background of the problem (i.e why you have to
> disable the IRQ on ARM).
>
> As the scheduler is common with x86, I would expect the problem is also
> happening on this architecture.

Changing a spinlock_irq into an irqsave is safe, functionally speaking,
but it is concerning that the scheduler appears to be called in
different interrupt states between architectures.

~Andrew


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