Re: [Xen-devel] [PATCH 06/10] acpi: PVH guests need _E02 method

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 11/07/2016 10:45 AM, Konrad Rzeszutek Wilk wrote:
> On Sun, Nov 06, 2016 at 04:42:39PM -0500, Boris Ostrovsky wrote:
>> This is the method that will get invoked on an SCI.
>>
>> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
>
> .. thought I wonder - do you want to also make the writes to
> _GPE.DPT1 and _GPE.DPT2 be optional? Looking at the mk_dsdt.c
> those are defined at 0xb044 and are done in:
>  /**** PCI0 start ****/ 
>
> aka:
>
>   stmt("OperationRegion", "DG1, SystemIO, 0xb044, 0x04");                     
> 415                                                                           
>       
> 416     push_block("Field", "DG1, ByteAcc, NoLock, Preserve");                
>       
> 417     indent(); printf("DPT1, 8, DPT2, 8\n");                               
>       
> 418     pop_block();                                     
>
> Which means if you run 'acpixtract' and 'acpixecute' to play with
> the DSDTs you will get nasty warnings about the DPT1 and DPT2 not being
> defined.
>
> I am actually not sure what the kernel will do with undefind DPT1 and DPT2?
> I would have thought the iasl compiler would throw an nasty fit?

Are these ACPI debug ports?

I don't see any warnings from acpixtract, unless it's a particular AML
that would cause it.

-boris


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