linux-kernel - Re: [PATCH v3 14/24] genirq/gic-v3-mbi: Remove unused wired MSI mechanics

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Message-ID: <87plsfu3sz.ffs@tglx>
Date: Mon, 17 Jun 2024 14:55:24 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Marc Zyngier <maz@...nel.org>, Shivamurthy Shastri
 <shivamurthy.shastri@...utronix.de>
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Subject: Re: [PATCH v3 14/24] genirq/gic-v3-mbi: Remove unused wired MSI
 mechanics

On Sat, Jun 15 2024 at 18:24, Marc Zyngier wrote:
> On Fri, 14 Jun 2024 11:23:53 +0100,
> Shivamurthy Shastri <shivamurthy.shastri@...utronix.de> wrote:
>>  static struct msi_domain_info mbi_pmsi_domain_info = {
>> -	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
>> -		   MSI_FLAG_LEVEL_CAPABLE),
>> +	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
>>  	.ops	= &mbi_pmsi_ops,
>>  	.chip	= &mbi_pmsi_irq_chip,
>>  };
>
> This patch doesn't do what it says. It simply kills any form of level
> MSI support for *endpoints*, and has nothing to do with any sort of
> "wire to MSI".
>
> What replaces it?

Patch 9/24 switches the wire to MSI with level support over. This just
removes the leftovers.