Re: [GIT PULL] x86/urgent for v5.11-rc7

From: Yu, Yu-cheng
Date: Mon Feb 08 2021 - 13:33:19 EST


On 2/7/2021 2:35 PM, Dave Hansen wrote:
On 2/7/21 12:44 PM, Alexei Starovoitov wrote:
It probably is an item on some Intel manager's to-enable list. So far,
the CET enablement concentrates only on userspace but dhansen might know
more about future plans. CCed.
It's definitely on our radar to look at after CET userspace.
What is the desired timeline to enable CET in the kernel ?
I think for bpf and tracing it will be mostly straightforward to deal
with extra endbr64 insn in front of the fentry nop.
Just trying to figure when this work needs to be done.

Yu-cheng? Any idea when you're going to start hacking on the in-kernel
IBT bits?


I have some kernel-mode enabling patches that I will soon send internally for comments. My estimate is probably before the summer, I can send those to the mailing list.

--
Yu-cheng