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Message-ID: <875yf5gb8j.ffs@tglx>
Date: Wed, 23 Nov 2022 12:29:32 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: "Tian, Kevin" <kevin.tian@...el.com>,
LKML <linux-kernel@...r.kernel.org>
Cc: "x86@...nel.org" <x86@...nel.org>, Joerg Roedel <joro@...tes.org>,
Will Deacon <will@...nel.org>,
"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Marc Zyngier <maz@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jason Gunthorpe <jgg@...lanox.com>,
"Jiang, Dave" <dave.jiang@...el.com>,
Alex Williamson <alex.williamson@...hat.com>,
"Williams, Dan J" <dan.j.williams@...el.com>,
Logan Gunthorpe <logang@...tatee.com>,
"Raj, Ashok" <ashok.raj@...el.com>, Jon Mason <jdmason@...zu.us>,
Allen Hubbe <allenbh@...il.com>
Subject: RE: [patch V2 03/33] genirq/msi: Provide data structs for per
device domains
On Wed, Nov 23 2022 at 07:57, Kevin Tian wrote:
>> From: Thomas Gleixner <tglx@...utronix.de>
>> Sent: Monday, November 21, 2022 10:38 PM
>>
>> Provide struct msi_domain_template which contains a bundle of struct
>> irq_chip, struct msi_domain_ops and struct msi_domain_info and a name
>> field.
>>
>> This template is used by MSI device domain implementations to provide the
>> domain specific functionality, feature bits etc.
>>
>> When a MSI domain is created the template is duplicated in the core code
>> so that it can be modified per instance. That means templates can be
>> marked const at the MSI device domain code.
>>
>> The template is a bundle to avoid several allocations and duplications
>> of the involved structures.
>>
>> The name field is used to construct the final domain and chip name via:
>>
>> $PREFIX-$NAME-$DEVNAME
>
> $PREFIX$NAME-$DEVNAME
Indeed.
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