> > On Feb 27, 2019, at 12:32 AM, Rodney W. Grimes
> > <freebsd-...@pdx.rh.cn85.dnsmgr.net> wrote:
> >
> >> I'm trying to get PCIe device (video card) passthrough working to a
> >> Windows bhyve VM, should this work now?
> >
> > No, this should not work now.
>
> Ok, easy enough. Should *any* PCIe passthrough work on Epyc right now?
I do not know what would be special about Epyc so can not say
for certain.
> Just trying the same thing with a simple PCIe USB card gives me:
>
> CPU0: local APIC error 0x40
> CPU0: local APIC error 0x40
> ivhd0: Error: completion failed tail:0xda0, head:0x0.
> ivhd0: Dump all the commands:
> [CMD0, off:0xff0] opcode= 0x0 0x0 0x0 0x0
> [CMD1, off:0x0] opcode= 0x3 0x0 0x0 0x7ffffffffffff003
> [CMD2, off:0x10] opcode= 0x0 0x0 0x0 0x0
> [CMD3, off:0x20] opcode= 0x2 0x0 0x0 0x0
> [CMD4, off:0x30] opcode= 0x2 0x2 0x0 0x0
> [...snip... lots of similar stuff]
>
> Then I get a bunch more APIC errors, and the system freezes for about 60
> seconds before recovering.
You do not get any host dmesg errors about unaligned BAR
ranges or sizes?
Can you get the pciconf -l -b info for the device you passed, something like:
# pciconf -l -b uhci0
uhci0@pci0:0:26:0: class=0x0c0300 card=0x20f017aa chip=0x29378086 rev=0x03
hdr=0x00
bar [20] = type I/O Port, range 32, base 0x1840, size 32, enabled
> -- Kevin
--
Rod Grimes rgri...@freebsd.org
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