>> This patch adds a new boot option to the pci kernel parameter called
>> "acs_disable" that will disable ACS. This is useful for PCI peer to
>> peer communication but can cause problems when IOVA isolation is
>> required and an IOMMU is enabled. Use with care.
> Eww.
Thanks for the feedback Christoph. My sentiments exactly ;-).
> Can we please add smbios quirks for the systems where you've
> observed this?
I can look at doing this. The issue with this approach is that it will require a kernel patch for each new system that is detected.
> we probably also want to keep the option just in case).
Agreed. At least then operators have a path to ACS disable prior to a quirk being accepted.
Stephen
��.n��������+%������w��{.n�����{����* jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
