Re: [Qemu-devel] [PATCH v2 2/2] gen_pcie_root_port: Add ACS (Access Control Services) capability

2019-01-24 Thread Knut Omang
On Thu, 2019-01-24 at 10:33 -0700, Alex Williamson wrote: > On Thu, 24 Jan 2019 11:12:53 +0100 > Knut Omang wrote: > > > Claim ACS support in the generic PCIe root port to allow > > passthrough of individual functions of a device to different > > guests (in a nested virt.setting) with VFIO. > > W

Re: [Qemu-devel] [PATCH v2 2/2] gen_pcie_root_port: Add ACS (Access Control Services) capability

2019-01-24 Thread Alex Williamson
On Thu, 24 Jan 2019 11:12:53 +0100 Knut Omang wrote: > Claim ACS support in the generic PCIe root port to allow > passthrough of individual functions of a device to different > guests (in a nested virt.setting) with VFIO. > Without this patch, all functions of a device, such as all VFs of > an SR

[Qemu-devel] [PATCH v2 2/2] gen_pcie_root_port: Add ACS (Access Control Services) capability

2019-01-24 Thread Knut Omang
Claim ACS support in the generic PCIe root port to allow passthrough of individual functions of a device to different guests (in a nested virt.setting) with VFIO. Without this patch, all functions of a device, such as all VFs of an SR/IOV device, will end up in the same IOMMU group. A similar situa