linux-kernel - Re: [Patch V2 12/13] irqchip: Add IMS (Interrupt Message Store) driver

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Date:   Thu, 25 Mar 2021 18:03:57 -0700
From:   "Dey, Megha" <megha.dey@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
Cc:     linux-kernel@...r.kernel.org, dave.jiang@...el.com,
        ashok.raj@...el.com, kevin.tian@...el.com, dwmw@...zon.co.uk,
        x86@...nel.org, tony.luck@...el.com, dan.j.williams@...el.com,
        jgg@...lanox.com, kvm@...r.kernel.org,
        iommu@...ts.linux-foundation.org, alex.williamson@...hat.com,
        bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        baolu.lu@...ux.intel.com, ravi.v.shankar@...el.com
Subject: Re: [Patch V2 12/13] irqchip: Add IMS (Interrupt Message Store)
 driver

Hi Thomas/Marc,

On 3/25/2021 12:07 PM, Thomas Gleixner wrote:
> On Thu, Mar 25 2021 at 17:43, Marc Zyngier wrote:
>> On Fri, 26 Feb 2021 20:11:16 +0000,
>> Megha Dey <megha.dey@...el.com> wrote:
>>> +
>>> +#include <linux/irqchip/irq-ims-msi.h>
>>> +
>>> +#ifdef CONFIG_IMS_MSI_ARRAY
>> Given that this covers the whole driver, what is this #defined used
>> for? You might as well make the driver depend on this config option.
> That's a leftover from the initial version I wrote which had also
> support for IMS_MSI_QUEUE to store the message in queue memory, but we
> have no use case yet for it.
>
> But yes, as things stand now it does not make any sense and IIRC at the
> end they do not share anything in the C file except for some includes at
> the very end.
Sure, I will make this change.
>
> Thanks,
>
>          tglx
>
>