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

From: [email-masked] (Konrad Rzeszutek Wilk)
Date: Wed, 10 Sep 2014 10:59:57 -0400

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.

> 
> David
> 
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