On Fri, 10 Jul 2026 21:26:11 +0000, David Matlack <[email protected]> wrote: > Inherit Access Control Services (ACS) flags on all incoming preserved > devices (endpoints and upstream bridges) during a Live Update. > > Inheriting ACS flags avoids changing routing rules while memory > transactions are in flight from preserved devices. This is also strictly > necessary to ensure that IOMMU group assignments do not change across > a Live Update for preserved devices, as changing ACS configurations can > split or merge IOMMU groups. > > [...]
Reviewed-by: Pasha Tatashin <[email protected]> -- Pasha Tatashin <[email protected]>
