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Date:      Thu, 15 Oct 2015 09:56:54 -0700
From:      Peter Grehan <grehan@freebsd.org>
To:        Matt Churchyard <matt.churchyard@userve.net>, Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
Cc:        "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>, Andriy Gapon <avg@FreeBSD.org>
Subject:   Re: Illumos boot
Message-ID:  <561FDAD6.4030006@freebsd.org>
In-Reply-To: <051593da46cc417fa3e3b8fef3018746@SERVER.ad.usd-group.com>
References:  <b2b07b65ee984ac5b902996b9bc9bdf4@SERVER.ad.usd-group.com> <17936712-FB88-4017-8C0D-BEC4926D698E@pluribusnetworks.com> <568ad0b2decf4537bff8f310a703c40b@SERVER.ad.usd-group.com> <83C11159-D5DE-4E02-972C-A66A80155EB8@pluribusnetworks.com> <051593da46cc417fa3e3b8fef3018746@SERVER.ad.usd-group.com>

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Hi Matt,

>> -s 0,hostbridge

  Things should work if you leave out the hostbridge. The PCIe 
capability that is tacked on to this will make Illumos use MSI/MSIx for 
the virtio adapter which apparently hits a bug in the driver. Without 
it, the virtio driver will fall back to legacy interrupts. This also 
means that the virtio adapter will be confined to slots 3/4/5/6.

[root@smartos ~]# echo ::interrupts | mdb -k
IRQ  Vect IPL Bus    Trg Type   CPU Share APIC/INT# ISR(s)
1    0x40 5   ISA    Edg Fixed  0   1     0x0/0x1   i8042_intr
3    0xb1 12  ISA    Edg Fixed  0   1     0x0/0x3   asyintr
4    0xb0 12  ISA    Edg Fixed  0   1     0x0/0x4   asyintr
9    0x81 9   PCI    Lvl Fixed  1   1     0x0/0x9   acpi_wrapper_isr
12   0x41 5   ISA    Edg Fixed  1   1     0x0/0xc   i8042_intr
16   0x42 5   PCI    Lvl Fixed  1   1     0x0/0x10  ahci_intr
17   0x43 5   PCI    Lvl Fixed  0   1     0x0/0x11  ahci_intr
18   0x60 6   PCI    Lvl Fixed  1   1     0x0/0x12  virtio_intx_dispatch
160  0xa0 0          Edg IPI    all 0     -         poke_cpu
208  0xd0 14         Edg IPI    all 1     -         kcpc_hw_overflow_intr
209  0xd1 14         Edg IPI    all 1     -         cbe_fire
210  0xd3 14         Edg IPI    all 1     -         cbe_fire
240  0xe0 15         Edg IPI    all 1     -         xc_serv
241  0xe1 15         Edg IPI    all 1     -         apic_error_intr


  (I believe Andriy Gapon (cc'd) has a fix for this in Illumos)

later,

Peter.




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