Thanks Zir, Could you give me some references for using "-device vfio-pci with x-vga=on" please? Can I run this on fedora 25?
2017-03-21 19:01 GMT+08:00 Zir Blazer <[email protected]>: >> Hi, >> I'm trying to use PCI passthrough to give an NVIDA GPU to a windows vm >> with qemu-kvm. I have a Windows 7 64bit VM working well under Fedora >> 25 with an Nvidia GPU GTX 750Ti. But when I tried Windows 7 32bit, the >> OVMF UEFI could not load the Windows ISO. > > Main issue: No 32 Bits Windows supports UEFI Boot. It only supports it in 64 > Bits versions. Use SeaBIOS. > >> I have some questions： >> *. How can I passthrough a GPU card to windows 7 32bit system? > > With SeaBIOS, and using -device vfio-pci with x-vga=on. Look for more > detailed instructions. > > >> *. Is OVMF UEFI firmware necessary for PCI GPU passthrough? I have >> tried with SeaBIOS, but the gpu card could not start with code 10. > > No, but it is the easiest way. Read what VGA Arbitration is. > > >> *. Does the GPU ROM must suppport UEFI? > > For Primary VGA Passthrough with UEFI Boot, yes. Legacy VBIOS works for > SeaBIOS, and every existing Video Card should have it. > I don't know if GeForces can be used with Secondary VGA Passthrough. That > means without using the ROM, it gets initialized solely by the Drivers when > the OS loads. > > > _______________________________________________ > vfio-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/vfio-users > _______________________________________________ vfio-users mailing list [email protected] https://www.redhat.com/mailman/listinfo/vfio-users
