On Tue, Nov 7, 2017 at 8:42 AM, Alex Williamson <alex.l.william...@gmail.com > wrote:
> On Tue, Nov 7, 2017 at 8:32 AM, Steve Freitas <sfl...@ihonk.com> wrote: > >> On 11/07/2017 06:51 AM, Alex Williamson wrote: >> >> On Mon, Nov 6, 2017 at 11:58 PM, Steve Freitas <sfl...@ihonk.com> wrote: >> >>> On 11/06/2017 07:01 PM, Marcial Ascencio wrote: >>> >>>> Hi guys, i was planning to buy USB card with at least 2 usb ports to >>>> assign each one to each VM, so I'm asking some advice about a brand that >>>> works soft with Linux VFIO. Thank you so much in advance! >>>> >>> >>> Hi Marcial, >>> >>> The Sonnet Allegro Pro worked great for me: >>> https://amazon.com/Sonnet-Allegro-Pro-PCIe-card/dp/B00XPUHO10/ >>> >>> I pass three of the four controllers through to different VMs, no ACS >>> override necessary on my machine. VM reboots work without an issue. An >>> earlier post on this mailing list indicated problems with this card with VM >>> reboots, but that seems to have been resolved in more recent kernels. My >>> host runs Ubuntu 17.04, kernel 4.10. >>> >> >> Does the PCIe switch actually support ACS on the downstream ports for >> this card? I've seen some reports that certain switch configurations are >> incorrectly allowing separate iommu groups where they shouldn't. Fair >> warning, we're probably going to need to fix that and break some >> configurations that were incorrectly grouped. Thanks, >> >> >> Yer breakin' my heart! :-) >> >> Good question, how do I check that? >> > > Send 'sudo lspci -vvv' > (lspci provided off-list) The card looks good to me: Your root port includes ACS support: 00:01.1 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1b (rev 07) (prog-if 00 [Normal decode]) Bus: primary=00, secondary=02, subordinate=07, sec-latency=0 Capabilities: [110 v1] Access Control Services ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- The upstream switch port on the card (ACS is not relevant here): 02:00.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) (prog-if 00 [Normal decode]) Bus: primary=02, secondary=03, subordinate=07, sec-latency=0 The downstream switch ports, each supports ACS: 03:01.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) (prog-if 00 [Normal decode]) Bus: primary=03, secondary=04, subordinate=04, sec-latency=0 Capabilities: [520 v1] Access Control Services ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl+ DirectTrans+ ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- 03:05.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) (prog-if 00 [Normal decode]) Bus: primary=03, secondary=05, subordinate=05, sec-latency=0 Capabilities: [520 v1] Access Control Services ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl+ DirectTrans+ ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- 03:07.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) (prog-if 00 [Normal decode]) Bus: primary=03, secondary=06, subordinate=06, sec-latency=0 Capabilities: [520 v1] Access Control Services ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl+ DirectTrans+ ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- 03:09.0 PCI bridge: PLX Technology, Inc. PEX 8608 8-lane, 8-Port PCI Express Gen 2 (5.0 GT/s) Switch (rev ba) (prog-if 00 [Normal decode]) Bus: primary=03, secondary=07, subordinate=07, sec-latency=0 Capabilities: [520 v1] Access Control Services ACSCap: SrcValid+ TransBlk+ ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl+ DirectTrans+ ACSCtl: SrcValid+ TransBlk- ReqRedir+ CmpltRedir+ UpstreamFwd+ EgressCtrl- DirectTrans- And then the four single function XHCI controllers. 04:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10) (prog-if 30 [XHCI]) Subsystem: Sonnet Technologies, Inc. FL1100 USB 3.0 Host Controller 05:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10) (prog-if 30 [XHCI]) Subsystem: Sonnet Technologies, Inc. FL1100 USB 3.0 Host Controller 06:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10) (prog-if 30 [XHCI]) Subsystem: Sonnet Technologies, Inc. FL1100 USB 3.0 Host Controller 07:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10) (prog-if 30 [XHCI]) Subsystem: Sonnet Technologies, Inc. FL1100 USB 3.0 Host Controller
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