[ 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?
Attached.
Your KVM kernel module does not like that the guest writes into
MSR_VM_HSAVE_PA. This is pretty fundamental and should always work if
you build current git kvm kernel modules. Are you sure you're using
the current git modules? Are you using the -enable-nesting option for
qemu?
Please try to rmmod everything, take a fresh checkout from git,
compile it and load the module with insmod kvm-amd.ko nested=1. I
can't think of any way this could fail.
Alex
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