Date: Mon, 21 Dec 2015 21:48:00 -0800 From: Anish <akgupt3@gmail.com> To: Sergey Manucharian <sm@ara-ler.com> Cc: FreeBSD virtualization <freebsd-virtualization@freebsd.org> Subject: Re: bhyve PCI pass-through to Linux guest Message-ID: <CALnRwMR_AFffipmnxNHBUzkSZ5Xo08PTDrEZ0-6y9Hyj9p5baQ@mail.gmail.com> In-Reply-To: <20151222034457.GA40078@dendrobates.araler.com> References: <20151220045821.GG22018@dendrobates.araler.com> <56763672.3090207@freebsd.org> <20151220051015.GH22018@dendrobates.araler.com> <56763A0B.8010802@freebsd.org> <20151220053644.GI22018@dendrobates.araler.com> <20151220215240.GB4064@dendrobates.araler.com> <5678BECC.7090200@freebsd.org> <20151222034457.GA40078@dendrobates.araler.com>
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>ppt0@pci0:0:20:0: class=0x0c0330 card=0x21f317aa chip=0x1e318086 Passthrough stub driver, part of vmm, controls the USB controller. Can you share output of /usr/sbin/devinfo from FreeBSD host, highlighting the usb mass/flash device in tree? Regards, Anish On Mon, Dec 21, 2015 at 7:44 PM, Sergey Manucharian <sm@ara-ler.com> wrote: > Excerpts from Peter Grehan's message from Tue 22-Dec-15 13:09: > > Hi Sergey, > > > > > This is pretty reproducible: > > > > > > I pass trough a PCI device (USB controller) to a Linux guest. It works > > > properly. Then I halt the VM, make sure that bhyve destroyed it and run > > > Windows guest with the same PCI device passed-through. > > > > > > Windows device manager does show the device, however, e.g. a flash > drive > > > plugged in is not presented to Windows, instead it's being processed by > > > FreeBSD. > > > > > > After that it does not work in Linux guest as well. Kernel module (vmm) > > > unloading and reloading does not help. > > > > The flash drive being processed by FreeBSD would indicate that it has > > ownership of the device. Would you be able to try a 'pciconf -vl' after > > the Linux guest exists, and after the Windows guest exits ? > > OK, I've experimented more and found that even with the same Linux VM > after halting it once, the pass-through device doesn't work when that > Linux guest is restarted again. > > It looks that both host and guest report exactly the same data before and > after restarting the guest: > > Linux - first run: > ================= > $ lspci -v > 00:07.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset > Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI]) > Subsystem: Lenovo Device 21f3 > Flags: bus master, medium devsel, latency 0, IRQ 24 > Memory at c0010000 (64-bit, prefetchable) [size=64K] > Capabilities: [70] Power Management version 2 > Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ > Kernel driver in use: xhci_hcd > > $ lsusb > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 002: ID 0781:5530 SanDisk Corp. Cruzer > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > > FreeBSD when Linux is running first time: > ========================================= > $ pciconf -v > ppt0@pci0:0:20:0: class=0x0c0330 card=0x21f317aa chip=0x1e318086 > rev=0x04 hdr=0x00 > vendor = 'Intel Corporation' > device = '7 Series/C210 Series Chipset Family USB xHCI Host > Controller' > class = serial bus > subclass = USB > > Linux - second run: > =================== > $ lspci -v > 00:07.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset > Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI]) > Subsystem: Lenovo Device 21f3 > Flags: bus master, medium devsel, latency 0, IRQ 24 > Memory at c0010000 (64-bit, prefetchable) [size=64K] > Capabilities: [70] Power Management version 2 > Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ > Kernel driver in use: xhci_hcd > > FreeBSD when Linux is running second time: > ========================================== > $ pciconf -lv > ppt0@pci0:0:20:0: class=0x0c0330 card=0x21f317aa chip=0x1e318086 > rev=0x04 hdr=0x00 > vendor = 'Intel Corporation' > device = '7 Series/C210 Series Chipset Family USB xHCI Host > Controller' > class = serial bus > subclass = USB > > > -- > Thanks, > Sergey > > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to " > freebsd-virtualization-unsubscribe@freebsd.org" >
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