Huh. Good point. Admittedly you might want to reuse very similar VM for both Windows and Linux.
-- Bronek Kozicki b...@spamcop.net On Thu, 27 Dec 2018, at 8:25 PM, Brett Foster wrote: > Wait, we're talking about Linux +ati drivers? Alright, then I have no > idea... but if it's windows, try the 440 and see if that helps. > > Brett > > Sent from my BlackBerry - the most secure mobile device > > Original Message > From: b...@spamcop.net > Sent: December 27, 2018 12:21 PM > To: fost...@edgeandvertex.org; erra...@yourstruly.sx; vfio-users@redhat.com > Subject: Re: [vfio-users] Installing Catalyst prevents VM from booting. > > Some Linuxes do not boot on 440FX (at least, not for me with booting > with UEFI, which is recommended for GPU passthrough). > > > B. > > > On Thu, 27 Dec 2018, at 8:18 PM, Brett Foster wrote: > > Why use q35? I always thought that wasn't recommended. At least a couple > > years ago, that was my impression. > > > > > > Sent from my BlackBerry - the most secure mobile device > > > > Original Message > > From: erra...@yourstruly.sx > > Sent: December 27, 2018 12:12 PM > > To: fost...@edgeandvertex.org; b...@spamcop.net > > Cc: vfio-users@redhat.com > > Subject: Re: [vfio-users] Installing Catalyst prevents VM from booting. > > > > > > BTW I think the specific reason you want to separate your pcie endpoints > > on q35 from the root complex using a switch or up/downstream ports is > > due to the fact that the root complex has direct access to memory. I > > can't find anything more specific regarding why that might be > > problematic but I know that pcie addressing is different for devices > > downstream as opposed to being connected directly to the root complex. I > > arrived at the conclusion that the amd driver works now with q35 because > > changed the topology as per the advice I read somewhere regarding how it > > should be done. I'd like to know for sure but I don't really understand > > PCIe well enough and I think as far as the driver is concerned its up to > > a guess as to why one configuration works and the other doesn't (unless > > you have better luck getting the windows remote kernel debugging to work > > than I have.) > > ________________________________________ > > From: vfio-users-boun...@redhat.com <vfio-users-boun...@redhat.com> on > > behalf of Brett Foster <fost...@edgeandvertex.org> > > Sent: Wednesday, December 26, 2018 11:24:48 AM > > To: Bronek Kozicki > > Cc: vfio-users > > Subject: Re: [vfio-users] Installing Catalyst prevents VM from booting. > > > > I have been using AMD via i440fx for like 5 years or so (across > > different hardware and graphics cards). The drivers that work are the > > ones that come via Windows Update. The drivers distributed by AMD do > > not. Not sure why since presumably they come from the same place. lol. > > > > On Tue, Dec 25, 2018 at 9:51 AM Bronek Kozicki > > <b...@spamcop.net<mailto:b...@spamcop.net>> wrote: > > On Tue, 25 Dec 2018, at 4:21 PM, Paige Thompson wrote: > > > Hey, > > > > > > From what I understand in general connecting devices straight to the > > > root complex is problematic and they should be connected to a bridge. I > > > was kind of wondering if anybody had any knowledge of this. I find the > > > configuration really confusing. I still cant really tell how the > > > topology works. > > > > > > Hope Alex will shed some light on it when he's back from the holiday break. > > > > > > -- > > Bronek Kozicki > > b...@spamcop.net<mailto:b...@spamcop.net> > > > > _______________________________________________ > > vfio-users mailing list > > vfio-users@redhat.com<mailto:vfio-users@redhat.com> > > https://www.redhat.com/mailman/listinfo/vfio-users _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
