Re: [PATCH v2] PCI: Disable ATS via quirk before notifying IOMMU drivers

From: David Matlack

Date: Tue Mar 31 2026 - 12:08:36 EST


On Fri, Mar 27, 2026 at 2:17 PM David Matlack <dmatlack@xxxxxxxxxx> wrote:

> /* AMD Raven platform iGPU */
> -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);
> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);

Sashiko found a bug here that would leave ATS enabled on this device:

https://sashiko.dev/#/patchset/20260327211649.3816010-1-dmatlack%40google.com?patch=12646