linux-kernel - Re: [patch 03/39] iommu/amd: Remove bogus check for multi MSI-X

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Date:   Wed, 16 Nov 2022 08:02:24 -0800
From:   Ashok Raj <ashok.raj@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     LKML <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.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>,
        Dave Jiang <dave.jiang@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Jon Mason <jdmason@...zu.us>, Allen Hubbe <allenbh@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        <linuxppc-dev@...ts.ozlabs.org>,
        "Ahmed S. Darwish" <darwi@...utronix.de>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [patch 03/39] iommu/amd: Remove bogus check for multi MSI-X

On Fri, Nov 11, 2022 at 02:54:19PM +0100, Thomas Gleixner wrote:
> PCI/Multi-MSI is MSI specific and not supported for MSI-X
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  drivers/iommu/amd/iommu.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> --- a/drivers/iommu/amd/iommu.c
> +++ b/drivers/iommu/amd/iommu.c
> @@ -3294,8 +3294,7 @@ static int irq_remapping_alloc(struct ir
>  
>  	if (!info)
>  		return -EINVAL;
> -	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI &&
> -	    info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX)
> +	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI)
>  		return -EINVAL;
>  
>  	/*
> 

nit:

maybe better to merge patch2/3 since both seem related?