Re: [PATCH v2] PCI: Add func1 DMA quirk for Marvell 88SE9125 SATA controller

From: Alex Williamson
Date: Wed Nov 17 2021 - 09:15:21 EST

On Wed, 17 Nov 2021 02:12:04 -0800
Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:

> On Tue, Nov 16, 2021 at 02:32:26PM +0000, Yifeng Li wrote:
> > Like other SATA controller chips in the Marvell 88SE91xx series, the
> > Marvell 88SE9125 has the same DMA requester ID hardware bug that prevents
> > it from working under IOMMU. This patch adds its device ID 0x9125 to the
> > Function 1 DMA alias quirk list.
> Btw, do we need to prevent vfio assignment for all devices with this
> quirk?

No, the alias is taken into account with grouping and IOMMU
programming, it should work with vfio. Thanks,