Date: Fri, 27 Jun 2025 08:31:36 +0200 From: Stephan Althaus <Stephan.Althaus@Duedinghausen.eu> To: virtualization@freebsd.org Subject: Re: bhyve: GPU passthrough for Nvidia cards Message-ID: <90515dd4-3aca-45a2-b43e-3d4558ff5e7f@Duedinghausen.eu> In-Reply-To: <89c5f73c-4b7a-4669-a1cf-d2837c096298@Duedinghausen.eu> References: <4785074a005d66ed92e5670b9fa4ce45a5d65eba.camel@FreeBSD.org> <c0cf8b11-3e21-4296-860c-17b87c9f2588@Duedinghausen.eu> <CAFDf7U%2BOCnez3YRtjAcSssdvdDCVqFyZxPZ3mXpxgD2WLNUuGg@mail.gmail.com> <89c5f73c-4b7a-4669-a1cf-d2837c096298@Duedinghausen.eu>
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[-- Attachment #1 --] On 6/27/25 08:00, Stephan Althaus wrote: > On 6/26/25 23:47, Nuno Teixeira wrote: >> Hello Stephan, >> >> A year a go I did try passtrhu a dedicated nvidia GTX 1650 while >> using integrated intel graphics (laptop Lenovo Legion 5 15IMH05). >> Windows detected card but nvidia drivers install failed at some point. >> On this laptop I did setup bios to use integrated graphics so I can >> passthru dedicated nvidia. >> >> Think I will give a new try since I follow main. >> >> Are you using laptops for this usecase? >> >> Thanks! >> >> Stephan Althaus <Stephan.Althaus@duedinghausen.eu> escreveu (quinta, >> 26/06/2025 à(s) 15:50): >> >> On 6/26/25 15:07, Corvin Köhne wrote: >> > Hi, >> > >> > I'm currently experimenting with GPU passthrough for Nvidia >> cards. All I have to >> > do to make it work with Ubuntu guests, is setting the INTPIN >> register to any >> > value instead of just 0x00. Unfortunately, I'm unfamiliar with >> PCI legacy >> > interrupts and how they work. The INTLINE register is set to >> 0xFF (unconnected). >> > So, is it safe to set the INTPIN register or what has to be >> done for it to work >> > as expected? >> > >> > Any help would be appreciated. >> > >> > >> Hi! >> >> You surely mean 'newer' NVidia cards, as my GT1030 works with >> FreeBSD >> 14.2 Host and ubuntu guest, NVIdia driver 570, (and Win guest btw) >> out-of-the-box, no kernel/driver modding... >> >> Regards, >> >> Stephan >> >> >> >> >> >> -- >> Nuno Teixeira >> FreeBSD UNIX: <eduardo@FreeBSD.org> Web: https://FreeBSD.org >> <https://FreeBSD.org>; > > Hello! > > Oh, laptops... With this "Optimus"-called feature i am not shure if it > will work... > > But i think it's worth trying. > > Maybe you will need the GPU ROM. > (https://forums.FreeBSD.org/threads/current-state-of-bhyve-nvidia-passthrough.88244/post-706455) > > Good luck! > > Stephan > > Hi! Whilst trying to get it to work, i would suggest to always shut the host down, not only restart the guest/vm, to be on the safe side. There may be side effects regarding the initialization of the GPU.. When you have a working setup, this may change and you may can reboot the vm and have always a working GPU, maybe.. Regards, Stephan [-- Attachment #2 --] <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div class="moz-cite-prefix">On 6/27/25 08:00, Stephan Althaus wrote:<br> </div> <blockquote type="cite" cite="mid:89c5f73c-4b7a-4669-a1cf-d2837c096298@Duedinghausen.eu"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <div class="moz-cite-prefix">On 6/26/25 23:47, Nuno Teixeira wrote:<br> </div> <blockquote type="cite" cite="mid:CAFDf7U+OCnez3YRtjAcSssdvdDCVqFyZxPZ3mXpxgD2WLNUuGg@mail.gmail.com"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <div dir="ltr"> <div> <div> <div> <div> <div>Hello Stephan,<br> <br> </div> A year a go I did try passtrhu a dedicated nvidia GTX 1650 while using integrated intel graphics (laptop Lenovo Legion 5 15IMH05). Windows detected card but nvidia drivers install failed at some point.<br> </div> On this laptop I did setup bios to use integrated graphics so I can passthru dedicated nvidia.<br> <br> </div> Think I will give a new try since I follow main.<br> <br> </div> Are you using laptops for this usecase?<br> <br> </div> Thanks!</div> <br> <div class="gmail_quote gmail_quote_container"> <div dir="ltr" class="gmail_attr">Stephan Althaus <<a href="mailto:Stephan.Althaus@duedinghausen.eu" moz-do-not-send="true" class="moz-txt-link-freetext">Stephan.Althaus@duedinghausen.eu</a>> escreveu (quinta, 26/06/2025 à(s) 15:50):<br> </div> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 6/26/25 15:07, Corvin Köhne wrote:<br> > Hi,<br> ><br> > I'm currently experimenting with GPU passthrough for Nvidia cards. All I have to<br> > do to make it work with Ubuntu guests, is setting the INTPIN register to any<br> > value instead of just 0x00. Unfortunately, I'm unfamiliar with PCI legacy<br> > interrupts and how they work. The INTLINE register is set to 0xFF (unconnected).<br> > So, is it safe to set the INTPIN register or what has to be done for it to work<br> > as expected?<br> ><br> > Any help would be appreciated.<br> ><br> ><br> Hi!<br> <br> You surely mean 'newer' NVidia cards, as my GT1030 works with FreeBSD <br> 14.2 Host and ubuntu guest, NVIdia driver 570, (and Win guest btw)<br> out-of-the-box, no kernel/driver modding...<br> <br> Regards,<br> <br> Stephan<br> <br> <br> <br> </blockquote> </div> <div><br clear="all"> </div> <br> <span class="gmail_signature_prefix">-- </span><br> <div dir="ltr" class="gmail_signature"> <div dir="ltr"> <div><font color="#888888">Nuno Teixeira</font></div> <div> <div><font color="#888888"> FreeBSD UNIX: <a class="moz-txt-link-rfc2396E" href="mailto:eduardo@FreeBSD.org" moz-do-not-send="true"><eduardo@FreeBSD.org></a> Web: <a href="https://FreeBSD.org" rel="noreferrer" target="_blank" moz-do-not-send="true">https://FreeBSD.org</a><br>; </font></div> </div> </div> </div> </blockquote> <p>Hello!</p> <p>Oh, laptops... With this "Optimus"-called feature i am not shure if it will work...</p> <p>But i think it's worth trying.</p> <p>Maybe you will need the GPU ROM. (<a class="moz-txt-link-freetext" href="https://forums.FreeBSD.org/threads/current-state-of-bhyve-nvidia-passthrough.88244/post-706455" moz-do-not-send="true">https://forums.FreeBSD.org/threads/current-state-of-bhyve-nvidia-passthrough.88244/post-706455</a>)</p>; <p>Good luck!</p> <p>Stephan</p> <p><br> </p> </blockquote> <p>Hi!</p> <p>Whilst trying to get it to work, i would suggest to always shut the host down, not only restart the guest/vm, to be on the safe side.</p> <p>There may be side effects regarding the initialization of the GPU..</p> <p>When you have a working setup, this may change and you may can reboot the vm and have always a working GPU, maybe..</p> <p>Regards,</p> <p>Stephan</p> </body> </html>
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