Re: [Xen-devel] [PATCH 3/4] xen: set the right flags when enabling interrupts for 8250

[Chen Baozi <baozich@xxxxxxxxx>]

On Jul 25, 2013, at 7:17 PM, Julien Grall <julien.grall@xxxxxxxxxx> wrote:

> On 07/25/2013 10:14 AM, Chen Baozi wrote:
> 
>> Besides this test, I noticed that we set a timer to poll UART after enabling
>> the interrupt. And the timer initialization codes are platform specific, 
>> which
>> should be implemented in xen/arch/arm/platforms/omap5.c for example. However,
>> I haven't done this yet. (I used to plan to turn to this work after UART 
>> porting
>> has been done.) Is it a possible factor that may cause my issues?
> 
> Xen uses the arch timers to handle the time. On some platform (for
> instance the Arndale), it's not enabled by default.
> 
> If the omap5 boot with the arch timers enabled, you don't need to
> implement the init_time callback.
> 
> Do you know if Xen receives timer interrupts?

Any way that I could confirm this?

There is a line of boot message:

"Using generic timer at 0 KHz."
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