On 23.12.2008, at 03:55, "Todd Deshane" <[email protected]> wrote:
I have successfully built the latest kvm, kvm-userspace from git.
I loaded the kvm_amd module with the nested=1 option.
The kvm guest that I am working with has an older version
of kvm (Ubuntu 8.10 + kvm package) and during boot I get:
[ 23.673107] Modules linked in: kvm_amd(+) kvm ppdev cpufreq_stats
cpufreq_powersave cpufreq_userspace cpufreq_conservative
cpufreq_ondemand freq_table container pci_slot wmi video output sbs
sbshc battery
ipv6 iptable_filter ip_tables x_tables ac lp virtio_balloon
virtio_net serio_raw psmouse pcspkr evdev joydev i2c_piix4 i2c_core
parport_pc parport button ext3 jbd mbcache usbhid hid sr_mod cdrom sg
virtio_b
lk pata_acpi ata_piix ata_generic uhci_hcd virtio_pci virtio_ring
virtio usbcore libata scsi_mod dock thermal processor fan fbcon
tileblit font bitblit softcursor fuse
[ 23.673107] Pid: 4278, comm: modprobe Tainted: G S
2.6.27-7-generic #1
[ 23.673107] RIP: 0010:[<ffffffff8022d35a>] [<ffffffff8022d35a>]
native_write_msr_safe+0xa/0x10
[ 23.673107] RSP: 0018:ffff880018dc3dd8 EFLAGS: 00010002
[ 23.673107] RAX: 0000000000001d01 RBX: ffff880018dc3e04 RCX:
00000000c0000080
[ 23.673107] RDX: 0000000000000000 RSI: 0000000000001d01 RDI:
00000000c0000080
[ 23.673107] RBP: ffff880018dc3dd8 R08: 0000000000000000 R09:
ffffffff806e1e20
[ 23.673107] R10: ffff880018dc3dfc R11: ffff880018dc3df8 R12:
ffff880018c096c0
[ 23.673107] R13: ffffffffa02b25e0 R14: ffffffffa02e1c80 R15:
00000000c0000080
[ 23.673107] FS: 00007f2f14f946e0(0000) GS:ffffffff806e1a80(0000)
knlGS:0000000000000000
[ 23.673107] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 23.673107] CR2: 00007f2f14fa8000 CR3: 0000000018d4f000 CR4:
00000000000006e0
[ 23.673107] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 23.673107] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 23.673107] Process modprobe (pid: 4278, threadinfo
ffff880018dc2000, task ffff8800190f1670)
[ 23.673107] Stack: ffff880018dc3e38 ffffffffa02db196
88000100b000007f 000000000000ffff
[ 23.673107] 0000000000000000 0000000000000010 0000000000000000
0000000000000000
[ 23.673107] 0000000000000000 ffffffffa02b25e0 ffffffffa02e1c80
00007f2f14f9a000
[ 23.673107] Call Trace:
[ 23.673107] [<ffffffffa02db196>] svm_hardware_enable+0xd6/0x140
[kvm_amd]
[ 23.673107] [<ffffffffa02b25e0>] ? hardware_enable+0x0/0x40 [kvm]
[ 23.673107] [<ffffffffa02b4693>] kvm_arch_hardware_enable
+0x13/0x20 [kvm]
[ 23.673107] [<ffffffffa02b260f>] hardware_enable+0x2f/0x40 [kvm]
[ 23.673107] [<ffffffff80254a44>] on_each_cpu+0x34/0x50
[ 23.673107] [<ffffffffa02b0c85>] kvm_init+0x165/0x280 [kvm]
[ 23.673107] [<ffffffffa00b3000>] ? svm_init+0x0/0x23 [kvm_amd]
[ 23.673107] [<ffffffffa00b3021>] svm_init+0x21/0x23 [kvm_amd]
[ 23.673107] [<ffffffff8020a041>] do_one_initcall+0x41/0x170
[ 23.673107] [<ffffffff8026c261>] ? __blocking_notifier_call_chain
+0x21/0x90
[ 23.673107] [<ffffffff8027d085>] sys_init_module+0xb5/0x1f0
[ 23.673107] [<ffffffff8021285a>] system_call_fastpath+0x16/0x1b
[ 23.673107]
[ 23.673107]
[ 23.673107] Code: 00 55 89 f9 48 89 e5 0f 32 31 c9 89 c7 48 89 d0
89 0e 48 c1 e0 20 89 fa 48 09 d0 c9 c3 0f 1f 40 00 55 89 f9 89 f0 48
89 e5 0f 30 <31> c0 c9 c3 66 90 55 89 f9 48 89 e5 0f 33 89 c1 48 89 d0
48 c1
[ 23.673107] RIP [<ffffffff8022d35a>] native_write_msr_safe+0xa/
0x10
[ 23.673107] RSP <ffff880018dc3dd8>
[ 23.673107] ---[ end trace 0dc989f1cf9a296e ]---
Maybe it is just that a newer version of KVM is needed?
I will also try to build a newer version of KVM and test.
Thanks for any comments.
Your guest is writing to an MSR that is unknown to the kvm msr
emulation. What does dmesg on the host say?
Alex
Cheers,
Todd
--
Todd Deshane
http://todddeshane.net
http://runningxen.com
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