Subject: Re: [Xen-devel] [PATCH v1 08/21] x86/xen/MSI: Use MSI chip framework to configure MSI/MSI-X irq

From: Yijing Wang <[email-masked]>
Date: Thu, 11 Sep 2014 09:28:57 +0800

On 2014/9/10 22:59, Konrad Rzeszutek Wilk wrote:
> On Wed, Sep 10, 2014 at 01:38:25PM +0100, David Vrabel wrote:
>> On 09/09/14 03:06, Yijing Wang wrote:
>>> On 2014/9/5 22:29, David Vrabel wrote:
>>>> On 05/09/14 11:09, Yijing Wang wrote:
>>>>> Use MSI chip framework instead of arch MSI functions to configure
>>>>> MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
>>>> [...]
>>>>> --- a/arch/x86/pci/xen.c
>>>>> +++ b/arch/x86/pci/xen.c
>>>> [...]
>>>>> @@ -418,9 +430,9 @@ int __init pci_xen_init(void)
>>>>>  #endif
>>>>>  
>>>>>  #ifdef CONFIG_PCI_MSI
>>>>> -	x86_msi.setup_msi_irqs = xen_setup_msi_irqs;
>>>>> -	x86_msi.teardown_msi_irq = xen_teardown_msi_irq;
>>>>> -	x86_msi.teardown_msi_irqs = xen_teardown_msi_irqs;
>>>>> +	xen_msi_chip.setup_irqs = xen_setup_msi_irqs;
>>>>> +	xen_msi_chip.teardown_irqs = xen_teardown_msi_irqs;
>>>>> +	x86_msi_chip = &xen_msi_chip;
>>>>>  	msi_chip.irq_mask = xen_nop_msi_mask;
>>>>>  	msi_chip.irq_unmask = xen_nop_msi_mask;
>>>>
>>>> Why have these not been changed to set the x86_msi_chip.mask/unmask
>>>> fields instead?
>>>
>>> Hi David, x86_msi_chip here is struct msi_chip data type, used to configure MSI/MSI-X
>>> irq. msi_chip above is struct irq_chip data type, represent the MSI irq controller. They are
>>> not the same object. Their name easily confusing people.
>>
>> Ok, it all makes sense now.
>>
>> Acked-by: David Vrabel <[email-masked]>
> 
> You can also add 'Tested-by: Konrad Rzeszutek Wilk <[email-masked]>'
> 
> on the whole series - I ran it through on Xen and on baremetal with a mix of 32/64 builds.
> 
> Oh, and also Reviewed-by: Konrad Rzeszutek Wilk <[email-masked]> the Xen parts.

Thanks very much for your test and review!

Thanks!
Yijing.

> 
>>
>> David
>>
>> _______________________________________________
>> Xen-devel mailing list
>> [email-masked]
>> http://lists.xen.org/xen-devel
> 
> .
> 

-- 
Thanks!
Yijing