linux-kernel - Re: [PATCH v3 03/24] PCI/MSI: Provide MSI_FLAG_PCI_MSI_MASK

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Date: Mon, 17 Jun 2024 14:52:03 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Bjorn Helgaas <helgaas@...nel.org>, Shivamurthy Shastri
 <shivamurthy.shastri@...utronix.de>
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Subject: Re: [PATCH v3 03/24] PCI/MSI: Provide MSI_FLAG_PCI_MSI_MASK_PARENT

On Fri, Jun 14 2024 at 11:09, Bjorn Helgaas wrote:
> On Fri, Jun 14, 2024 at 12:23:42PM +0200, Shivamurthy Shastri wrote:
>> Most ARM(64) PCI/MSI domains mask and unmask in the parent domain after or
>> before the PCI mask/unmask operation takes place. So there are more than a
>> dozen of the same wrapper implementation all over the place.
>
> Is this an opportunity to clean up all these wrappers?  If you could
> mention an example or two here, maybe somebody would be motivated to
> come back and simplify the existing wrappers to take advantage of this
> new flag?

The wrappers go away once the relevant MSI implementations are converted
over to the new scheme/

See patch 7 for an example: its_[un]mask_msi_irq() are gone.

Thanks,

        tglx