Date: Mon, 29 Feb 2016 23:47:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 207602] 10.3-BETA 2 zroot doesn't boot with VT-d enabled and vmm in loader.conf Message-ID: <bug-207602-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207602 Bug ID: 207602 Summary: 10.3-BETA 2 zroot doesn't boot with VT-d enabled and vmm in loader.conf Product: Base System Version: 10.3-BETA2 Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: misc Assignee: freebsd-bugs@FreeBSD.org Reporter: ehrmann@gmail.com CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org I installed FreeBSD 10.3-BETA2 on a system with a Z170 chipset and Skylake CPU on a ZFS root device. When I have both VT-d enabled in the bios, vmm enabled (for bhyve) and pptdevs="<any pci dev>" (for PCI passthrough) in loader.conf, sometime during the boot, there's an unrecoverable error with my SATA hard drive, it's reattched, but the boot was interrupted, and the boot loader can't find the ZFS root. If either VT-d is disabled, vmm isn't enabled in loader.conf, or there's no PCI passthrough device, the system boots fine. The cause seems to be an interrupt storm. It always happens on IRQ64, even when a different device claims it. It's the lowest IRQ listed by vmstat -i. Here's my /boot/loader.conf: kern.geom.label.gptid.enable="0" net.link.tap.up_on_open="1" net.inet.ip.forwarding="1" zfs_load="YES" pptdevs="0/31/6" vmm_load="YES" This is the device I'm trying to do PCI passthrough on ppt0@pci0:0:31:6: class=0x020000 card=0x86721043 chip=0x15b88086 rev=0x31 hdr=0x00 vendor = 'Intel Corporation' device = 'Ethernet Connection (2) I219-V' class = network subclass = ethernet Because this is a modern motherboard/chipset, it lacks IO like RS-232, and I couldn't capture the log directly. The best I could do is this video: http://imgur.com/wiiU9Bf Root mount waiting for: usbus1 usbus0 uhub1: 4 ports with 4 removable, self powered uhub0: 26 ports with 26 removable, self powered Root mount waiting for: usbus0 <another line? it's not clear in the video> xhci_interrupt: host controller halted <repeated ~200 times> interrupt storm detected on "irq264:"; throttling interrupt source Trying to mount root from zfs:zroot/ROOT/default []... uhub0: (ada0:ahcich0:0:0:0) READ_FPDMA_QUEUED. ACB: 60 00 00 00 00 40 00 00 00 01 00 00 (ada:ahcich0:0:0:0): CAM status: CCB request was invalid at usbus0, port 1. addr 1 (disconnected) xhci_interrupt: host controller halted (ada0:ahcich0:0:0:0): Error 22. Unretryable error xhci_interrupt: host controller halted <missing lines?> (aprobe0:ahcich0:0:0:0): CAM status: CCB request was invalid (aprobe0:ahcich0:0:0:0): Error 22. Unretryable error. ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 ada0: ... detached Solaris: NOTICE: Cannot find the pool label for 'zroot' Mounting from zfs:zroot/ROOT/default failed with error 5. -- You are receiving this mail because: You are the assignee for the bug.
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