https://bugzilla.kernel.org/show_bug.cgi?id=218257 Bug ID: 218257 Summary: [Nested VM] Failed to boot L2 Windows guest on L1 Windows guest Product: Virtualization Version: unspecified Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: ruifeng.gao@xxxxxxxxx Regression: Yes Bisected a1c288f87de7aff94e87724127eabb6cdb38b120 commit-id: Created attachment 305591 --> https://bugzilla.kernel.org/attachment.cgi?id=305591&action=edit Captured failed screen on L2 guest Environment: ------------ CPU Architecture: x86_64 Host OS: CentOS Stream 9 Guest OS L1: Windows 10 Pro (10.0.18362 N/A Build 18362), x64-based PC Guest OS L2: Windows 10 Enterprises (10.0.10240 N/A Build 10240), x64-based PC kvm.git next branch commit id: e9e60c82fe391d04db55a91c733df4a017c28b2f qemu-kvm commit id: Host Kernel Version: 6.7.0-rc1 Hardware: Sapphire Rapids Bug detailed description: -------------------------- To verify two nested Windows guests scenarios, we used Windows image to create L1 guest, then failed to boot L2 Windows guest on L1 guest. The error screen is captured in attachment. Note: this is suspected to be a KVM Kernel bug by bisect the different commits: kvm next + qemu-kvm = result a1c288f87de7aff94e87724127eabb6cdb38b120 + d451e32c = bad e1a6d5cf10dd93fc27d8c85cd7b3e41f08a816e6 + d451e32c = good Reproduce steps: ---------------- 1.create L1 guests: qemu-system-x86_64 -accel kvm -cpu host -smp 8 -drive file=L1_VMWARE_L2_WIN10.img,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0,bootindex=0 -m 8192 -monitor pty -daemonize -vnc :7 -device virtio-net-pci,netdev=nic0,mac=00:05:66:34:98:e6 -netdev tap,id=nic0,br=virbr0,helper=/usr/local/libexec/qemu-bridge-helper,vhost=on 2. create L2 guests: Using VMware Workstation to boot Win10 guest. Current result: ---------------- L2 guest (Windows 10 guest) failed to boot up. Expected result: ---------------- L2 guest (Windows 10 guest) boot up successfully. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
