* Re: [PATCH v2] PCI: Add func1 DMA quirk for Marvell 88SE9125 SATA controller
[not found] <YZPA+gSsGWI6+xBP@work>
@ 2021-11-17 10:12 ` Christoph Hellwig
2021-11-17 14:15 ` Alex Williamson
0 siblings, 1 reply; 2+ messages in thread
From: Christoph Hellwig @ 2021-11-17 10:12 UTC (permalink / raw)
To: Yifeng Li; +Cc: Bjorn Helgaas, linux-pci, linux-kernel, kvm
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?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v2] PCI: Add func1 DMA quirk for Marvell 88SE9125 SATA controller
2021-11-17 10:12 ` [PATCH v2] PCI: Add func1 DMA quirk for Marvell 88SE9125 SATA controller Christoph Hellwig
@ 2021-11-17 14:15 ` Alex Williamson
0 siblings, 0 replies; 2+ messages in thread
From: Alex Williamson @ 2021-11-17 14:15 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Yifeng Li, Bjorn Helgaas, linux-pci, linux-kernel, kvm
On Wed, 17 Nov 2021 02:12:04 -0800
Christoph Hellwig <hch@infradead.org> 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,
Alex
^ permalink raw reply [flat|nested] 2+ messages in thread
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