On Wed, 2019-04-03 at 11:53 +1100, Michael Ellerman wrote:
Joakim Tjernlund Joakim.Tjernlund@infinera.com writes:
On Tue, 2019-04-02 at 17:19 +1100, Michael Ellerman wrote:
Joakim Tjernlund Joakim.Tjernlund@infinera.com writes:
...
Can I compile it away?
You can't actually, but you can disable it at runtime with "nospectre_v1" on the kernel command line.
We could make it a user selectable compile time option if you really want it to be.
I think yes. Considering that these patches are fairly untested and the impact in the wild unknown. Requiring systems to change their boot config over night is too fast.
OK. Just to be clear, you're actually using 4.14 on an NXP board and would actually use this option? I don't want to add another option just for a theoretical use case.
Correct, we use 4.14 on several custom boards using NXP CPUs and would appreciate if I could control spectre with a build switch.
Thanks a lot! Jocke