linux-kernel - RE: [PATCH v3 03/15] PCI: Use PCI_IRQ_MSI

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Date:   Tue, 9 Jun 2020 16:31:29 +0000
From:   "Stankiewicz, Piotr" <piotr.stankiewicz@...el.com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Kurt Schwemmer <kurt.schwemmer@...rosemi.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        "Shevchenko, Andriy" <andriy.shevchenko@...el.com>,
        Olof Johansson <olof@...om.net>,
        "Kuppuswamy Sathyanarayanan" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Kelvin Cao <kelvin.cao@...rochip.com>,
        Wesley Sheng <wesley.sheng@...rochip.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Krzysztof Wilczynski <kw@...ux.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 03/15] PCI: Use PCI_IRQ_MSI_TYPES where appropriate

> -----Original Message-----
> From: Christoph Hellwig <hch@...radead.org>
> Sent: Tuesday, June 9, 2020 5:51 PM
> 
> On Tue, Jun 09, 2020 at 11:16:46AM +0200, Piotr Stankiewicz wrote:
> > Seeing as there is shorthand available to use when asking for any type
> > of interrupt, or any type of message signalled interrupt, leverage it.
> >
> > Signed-off-by: Piotr Stankiewicz <piotr.stankiewicz@...el.com>
> > Reviewed-by: Andy Shevchenko <andriy.shevchenko@...el.com>
> > Reviewed-by: Logan Gunthorpe <logang@...tatee.com>
> 
> The patch actually adding PCI_IRQ_MSI_TYPES still didn't show up on linux-pci.
> 

I'm not sure why it didn't get delivered. I just resent it, for sake of completeness.

> But from the person who added PCI_IRQ_*:
> 
> NAK to the whole concept of PCI_IRQ_MSI_TYPES, I think this just makes the
> code a lot more confusing.  Especially with the new IMS interrupt type, which
> really is a MSI-like interrupt but certainly shouldn't be added to this mask.