On Wed, 30 Nov 2016 11:14:22 +0100 Auger Eric <[email protected]> wrote:
> Hi Ganapat, > > On 30/11/2016 11:04, Ganapatrao Kulkarni wrote: > > Hi Eric, > > > > in you repo "https://github.com/eauger/linux/tree/v4.9-rc5-reserved-rfc-v3"; > > there is 11th patch "pci: Enable overrides for missing ACS capabilities" > > is this patch part of some other series? > > Actually this is a very old patch from Alex aimed at working around lack > of PCIe ACS support: https://lkml.org/lkml/2013/5/30/513 This patch is not destined for upstream, be very cautious relying on it. Hardware vendors need to be aware that lack of ACS imposes usage restrictions. Allowing users to arbitrarily override isolation for various components is not supportable. Quirks can be used to expose isolation where it exists, but is not described by ACS. Where isolation does not exist, this patch is unsafe. Thanks, Alex _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
