Hello,
I'm trying to run libvirtd and KVM on a POWER7 machine. For some reason, virt-manager on a client says there is no KVM support. :-( The KVM module installed on the system cannot be loaded:
# modprobe kvm modprobe: ERROR: could not insert 'kvm': Input/output error
There are no new messages in dmesg. Presumably, the file /lib/modules/3.10.11-200.fc19.ppc64p7/kernel/arch/powerpc/kvm/kvm.ko is readable; at least sha1sum can read it. This is how the error appears in strace (from open()ing the module to an unsuccessful kcmp()):
open("/lib/modules/3.10.11-200.fc19.ppc64p7/kernel/arch/powerpc/kvm/kvm.ko", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\2", 6) = 6 lseek(3, 0, SEEK_SET) = 0 fstat(3, {st_mode=S_IFREG|0744, st_size=273976, ...}) = 0 mmap(NULL, 273976, PROT_READ, MAP_PRIVATE, 3, 0) = 0x1fffffad0000 kcmp(0x3, 0x1ffffff68330, 0, 0x3, 0) = -1 EIO (Input/output error)
The OS is a fresh Fedora 19 installation with kernel.ppc64p7 3.10.11-200.fc19.
Perhaps this could be a known issue or a glitch related to SELinux, but I have no idea what to try next. Could someone give me a hint, please?
Cheers! Andrej
On Mon, Sep 23, 2013 at 11:07:41AM +0200, Andrej Podzimek wrote:
Hello,
I'm trying to run libvirtd and KVM on a POWER7 machine. For some reason, virt-manager on a client says there is no KVM support. :-( The KVM module installed on the system cannot be loaded:
# modprobe kvm modprobe: ERROR: could not insert 'kvm': Input/output error
Does your POWER7 machine actually support hardware virtualization? Unfortunately our latest kernels have disabled Alex's PR KVM because it wasn't compatible with HV KVM. I've seen some patches floating around (not upstream AFAIK) to fix it so both can be configured together.
kcmp(0x3, 0x1ffffff68330, 0, 0x3, 0) = -1 EIO (Input/output error)
This could be a whole range of problems. Probably best to dive into the kernel code and find out what the real error is :-(
Rich.
-
Andrej Podzimek -
Richard W.M. Jones