Re: [PATCH] x86: enable Data Operand Independent Timing Mode

Eric Biggers
2026-03-18T16:17:00Z

On Wed, Mar 18, 2026 at 08:44:05AM -0700, Dave Hansen wrote:
> On 3/18/26 08:33, Marvin Häuser wrote:
> > As I haven’t found any news on the list or the tree, I'd like to
> > inquire whether there’s been any updates on the situation.
>
> I'd summarize it like this: lots of meetings, no updates.
>
> IMNHO (and not speaking for my employer) DOITM itself is dead. There's
> almost no chance of Linux ever doing anything with the existing, public
> DOITM architecture.

Doesn't DOITM still need to be enabled by default for now, given that
data-dependent timing is a backwards compatibility break and code hasn't
been updated to account for it yet?

- Eric