Kernel is working, please fix also the HWE for 16.04 with the patches

Linux XXXXXXXX 4.13.0-25-generic #29~lp1741655 SMP

~# lsmod | grep kvm
kvm_intel             200704  7
kvm                   585728  1 kvm_intel


processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Xeon(R) CPU            5110  @ 1.60GHz
stepping        : 6
microcode       : 0xd2
cpu MHz         : 1596.587
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov 
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm co
nstant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 
monitor ds_cpl vmx tm2 ssse3 cx16 xtpr pdcm dca lahf_lm pti tpr_shadow dtherm
bugs            : cpu_insecure
bogomips        : 3193.17
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual

-- 
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/1741655

Title:
  Regression: KVM no longer supports Intel CPUs without Virtual NMI

Status in linux package in Ubuntu:
  In Progress
Status in linux-hwe package in Ubuntu:
  New
Status in linux source package in Artful:
  In Progress
Status in linux-hwe source package in Artful:
  New
Status in linux source package in Bionic:
  In Progress
Status in linux-hwe source package in Bionic:
  New

Bug description:
  Since upgrading from zesty to artful, I'm not longer able to use KVM on my 
server:
  # modprobe kvm-intel
  modprobe: ERROR: could not insert 'kvm_intel': Input/output error

  Searching tells me this is caused by requiring Virtual NMI support[1]

  Running the script provided on the mailing list[1] to check virtualization 
features confirms my CPU (Xeon E5345) doesn't support Virtual NMIs:
  # python features.py | grep NMI
    NMI exiting                              yes
    Virtual NMIs                             no
    NMI-window exiting                       no

  Virtual NMI support was required in v4.12[1] and later reverted in
  v4.14.3[2] as some models (including Xeons) don't support it, even if
  others with the same core do.

  
  [1] https://bugzilla.redhat.com/show_bug.cgi?id=1490803
  [2] https://lkml.org/lkml/2017/8/7/231
  [3] 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/arch/x86/kvm/vmx.c?h=linux-4.13.y&id=2c82878b0cb38fd516fd612c67852a6bbf282003
  [4] 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/arch/x86/kvm/vmx.c?h=linux-4.14.y&id=a77360e989f3dc06e4f177a0837d533d13a20d91

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1741655/+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

Reply via email to