Hi Alex, Thanks for the response.
Actually my target is trying to enable virglrenderer on Xen based Qemu. Before, I have successfully enabled it on KVM based Qemu by the Qemu command line. Such as 'qemu-system-x86_64 *-device virtio-vga-gl* xxxxxxx' If change to use xl, I don't know how to set this kind of special option(*-device virtio-vga-gl* ) to qemu after I checked the xl's arguments. Or do you have any idea? :) Seems using XL is much more common than directly using the qemu command line , right? Thanks, Trigger On Fri, Mar 4, 2022 at 11:05 PM Alex Bennée <[email protected]> wrote: > > Trigger Huang <[email protected]> writes: > > > Hello, > > > > I have built & installed Xen 4.15 onto my Ubuntu20.04 platform > successfully according to > > https://wiki.xenproject.org/wiki/Compiling_Xen_From_Source > > After reboot, I entered Domain 0 successfully. The command xl info shows > the right version string. > > host : xvg > > release : 5.13.0-30-generic > > version : #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC > 2022 > > machine : x86_64 > > nr_cpus : 16 > > max_cpu_id : 31 > > nr_nodes : 1 > > cores_per_socket : 8 > > threads_per_core : 2 > > cpu_mhz : 2994.377 > > hw_caps : > 178bf3ff:76d8320b:2e500800:244037ff:0000000f:219c91a9:00400004:00000500 > > virt_caps : pv hvm hvm_directio pv_directio hap shadow > > total_memory : 15719 > > free_memory : 11425 > > sharing_freed_memory : 0 > > sharing_used_memory : 0 > > outstanding_claims : 0 > > free_cpus : 0 > > xen_major : 4 > > xen_minor : 15 > > xen_extra : .3-pre-atg08 > > xen_version : 4.15.3-pre-atg08 > > xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p > hvm-3.0-x86_64 > > xen_scheduler : credit2 > > xen_pagesize : 4096 > > platform_params : virt_start=0xffff800000000000 > > xen_changeset : Fri Mar 4 13:33:49 2022 +0800 git:6aa4cdbc31 > > xen_commandline : placeholder dom0_mem=4096M,max:8192M > no-real-mode edd=off > > cc_compiler : gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 > > cc_compile_by : xvg > > cc_compile_domain : > > cc_compile_date : Fri Mar 4 14:21:33 CST 2022 > > build_id : 234929adcb7588b1414c2b6e5477fa95052b4ded > > xend_config_format : 4 > > > > Then my next step is to create ubuntu guest VM(sudo or use root user): > > /usr/local/lib/xen/bin/qemu-system-x86_64 -smp 1 -xen-domid 4 > -machine xenfv -m 4G -net nic,model=virtio -net > > user,hostfwd=tcp::2222-:22 -hda ./u2004.qcow2 -boot d -cdrom > ./ubuntu-20.04-desktop-amd64.iso > > However, I always failed with the following error: > > qemu-system-x86_64: failed to map ioreq server resources: error 3 > handle=0x55eeb1f6c0b0 > > qemu-system-x86_64: xen hardware virtual machine initialisation > failed > > After debugging, the error is caused by > osdep_xenforeignmemory_map_resource failed to invoke > IOCTL_PRIVCMD_MMAP_RESOURCE. And > > this IOCTL will return -1. > > Why are you not launching your guests with the xl commands? > > > > > So my question is, am I using the right qemu command? Anything else is > needed to set/config? > > Note, if I didn't specify the option ' -xen-domid 4 -machine xenfv ', I > can start qemu successfully > > > > Would you please help with it? > > > -- > Alex Bennée >
