linux-kernel - Re: [PATCH] cxl: Add generic MSI/MSI-X interrupt support

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Message-ID: <20221012231558.m3qhtsuagpvg22tt@offworld>
Date:   Wed, 12 Oct 2022 16:15:58 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Dave Jiang <dave.jiang@...el.com>
Cc:     dan.j.williams@...el.com, ira.weiny@...el.com,
        Jonathan.Cameron@...wei.com, alison.schofield@...el.com,
        vishal.l.verma@...el.com, bwidawsk@...nel.org,
        a.manzanares@...sung.com, linux-kernel@...r.kernel.org,
        linux-cxl@...r.kernel.org
Subject: Re: [PATCH] cxl: Add generic MSI/MSI-X interrupt support

On Wed, 12 Oct 2022, Dave Jiang wrote:

>
>On 10/12/2022 11:04 AM, Davidlohr Bueso wrote:
>>Introduce a generic irq table for CXL components/features that can have
>>standard irq support - DOE requires dynamic vector sizing and is not
>>considered here.
>>
>>Create an infrastructure to query the max vectors required for the CXL
>>device.
>>
>>Signed-off-by: Davidlohr Bueso <dave@...olabs.net>
>
>LGTM. Although it would be nice to see the other half of the picture.
>i.e. having the mailbox consuming the vector via request_irq() as an
>example.

Well Ira has already implemented the irq support for the events[0], and my
plan is to send my mbox irq patches along with the async handling stuff
once this patch lands.

>
>Reviewed-by: Dave Jiang <dave.jiang@...el.com>

Thanks!

[0] https://lore.kernel.org/linux-cxl/20221012180136.tc3ryjumquvnaqk2@offworld/T/#me42f5ff69bb78ac47ce94b647e6628fa3e841696