Ubuntu Updates for the Meltdown / Spectre Vulnerabilities(blog.dustinkirkland.com) |
Ubuntu Updates for the Meltdown / Spectre Vulnerabilities(blog.dustinkirkland.com) |
When something like this happens they have to take the patches and test them against their kernel.
They have to package the kernel for Ubuntu and compile it with whatever modules are standard for them. Plus perhaps applying some distro-specific patches (I don't know if Ubuntu does this), and testing.
http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/2018-01-...
They have a 14MB base patch, and then a few small ones.
CHANGES mention KPTI, so it should be good to go.