Another report on different hardware: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1278531
I've been able to test with a mainline 3.16 kernel (dfb945473ae8528fd885607b6fa843c676745e0c) and it worked fine. Time to bisect... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1329434 Title: nested KVM fails on intel hardware - KVM: entry failed, hardware error 0x0 Status in “linux” package in Ubuntu: In Progress Status in “linux” source package in Trusty: In Progress Bug description: [Impact] Using nested KVM on some hypervisors doesn't work. [Test Case] 1) enable nested KVM: sudo modprobe -r kvm_intel sudo modprobe kvm_intel nested=1 cat /sys/module/kvm_intel/parameters/nested # should say Y 2) generate an L1 guest and then generate an L2 guest inside the L1 guest - ensure L1 has enough memory to boot L2 - if using libvirt you may need to edit the default bridge to use a different subnet than the L1 guest 3) boot the L2 guest 4) L2 guest should boot If not you can see the log: sudo cat /var/log/libvirt/qemu/nested-L2.log <snip> KVM: entry failed, hardware error 0x0 EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000663 ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000 EIP=0000fff0 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 00000000 0000ffff 00009300 CS =f000 ffff0000 0000ffff 00009b00 SS =0000 00000000 0000ffff 00009300 DS =0000 00000000 0000ffff 00009300 FS =0000 00000000 0000ffff 00009300 GS =0000 00000000 0000ffff 00009300 LDT=0000 00000000 0000ffff 00008200 TR =0000 00000000 0000ffff 00008b00 GDT= 00000000 0000ffff IDT= 00000000 0000ffff CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 Code=00 66 89 d8 66 e8 02 f7 ff ff 66 83 c4 0c 66 5b 66 5e 66 c3 <ea> 5b e0 00 f0 30 36 2f 32 33 2f 39 39 00 fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1329434/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
