Re: [Help] bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument � NVIDIA passthrough with Corvin's branch on FreeBSD 15.0

Reply: Mario Marietto : "Re:_**[Help]_bhyve:_bootrom_alloc:_vm_mmap_mapseg:_I nvalid_argument_—_NVIDIA_passthrough_with_Corvin's_branch_ on_FreeBSD_15.0**"
In reply to: Matthew Grooms : "Re:_**[Help]_bhyve:_bootrom_alloc:_vm_mmap _mapseg:_Invalid_argument_—_NVIDIA_passthrough_with_C orvin's_branch_on_FreeBSD_15.0**"
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From: Corvin K�hne <corvink_at_FreeBSD.org>
Date: Mon, 08 Jun 2026 06:39:59 UTC

On Fri, 2026-06-05 at 11:20 -0500, Matthew Grooms wrote:
> On 6/5/26 01:34, Corvin Köhne wrote:
> > On Thu, 2026-06-04 at 13:23 +0200, Mario Marietto wrote:
> > >          Hi everyone,
> > >   I'm trying to get NVIDIA GPU passthrough working with bhyve on FreeBSD
> > > 15.0-
> > > RELEASE-p5, using Corvin Köhne's nvidia-wip branch:
> > >   
> > > https://github.com/Beckhoff/freebsd-src/tree/phab/corvink/15.0/nvidia-wip
> > >   The VM fails to start with the following error before the guest even
> > > boots:
> > >   bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument
> > NVIDIA GPU passthrough should work with stock 15.0, no patches required.
> 
> I was about to attempt this myself. Are all the required patches present 
> in 14.4 as well?
> 
> Thanks,
> 
> -Matthew
> 

Yes, the required patch is present in 14.4 as well.


-- 
Best regards,
Corvin