diff options
Diffstat (limited to 'kernel/arch/x86/configs/README.opnfv')
| -rw-r--r-- | kernel/arch/x86/configs/README.opnfv | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/arch/x86/configs/README.opnfv b/kernel/arch/x86/configs/README.opnfv new file mode 100644 index 000000000..752ff7ba5 --- /dev/null +++ b/kernel/arch/x86/configs/README.opnfv @@ -0,0 +1,19 @@ +As the ubuntu 16.04 is based on 4.4 kernel, thus we can try to refer the config +file for opnfv config file. + +The arch/x86/configs/config-4.4.0-62-generic is the config file used by ubuntu +kernel. Comparing with the opnfv kernel, the key differences are: + a. Real time config support like NOHZ_FULL, PREMEPMT kernel, different RCU +mechanism, + b. Disabling some feature that may impact real time result, like power +management functionality (C/P state). The hotplug support is disabled also +temply now. + c. Some ubuntu specific driver is not copied. + d. Some difference of build-in/module selection, because some config items +are selected automatically and we don't figure out the default value difference +yet. + e. Some virtualization support like Xen/HyperV is not enabled yet, to avoid +potential impact. + +In future, we should leave only item a/b and remove the differences caused by +item c/d/e. |