Re: [tip: x86/core] x86/ibt: Implement FineIBT-BHI mitigation
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- Subject: Re: [tip: x86/core] x86/ibt: Implement FineIBT-BHI mitigation
- From: Ramon de C Valle <rcvalle@xxxxxxxxxx>
- Date: Tue, 11 Mar 2025 13:23:39 -0700
- Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Matthew Maurer <mmaurer@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, ojeda@xxxxxxxxxx, linux-tip-commits@xxxxxxxxxxxxxxx, Scott Constable <scott.d.constable@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Kees Cook <kees@xxxxxxxxxx>, x86@xxxxxxxxxx, Sami Tolvanen <samitolvanen@xxxxxxxxxx>, Alice Ryhl <aliceryhl@xxxxxxxxxx>
- In-reply-to: <CANiq72mcCEbeWb-RAXLcWRnJms2LA6xV=QqQ5=N3ii=3TC89fw@mail.gmail.com>
- References: <20250224124200.820402212@infradead.org> <174057447519.10177.9447726208823079202.tip-bot2@tip-bot2> <20250226195308.GA29387@noisy.programming.kicks-ass.net> <CANiq72=3ghFxy8E=AU9p+0imFxKr5iU3sd0hVUXed5BA+KjdNQ@mail.gmail.com> <20250310160242.GH19344@noisy.programming.kicks-ass.net> <CAOcBZOSPBsTvWFdpwE0-ZU76yMDGBEo3p9y614XYEu+ZSnQ6Sg@mail.gmail.com> <CANiq72mcCEbeWb-RAXLcWRnJms2LA6xV=QqQ5=N3ii=3TC89fw@mail.gmail.com>
On Tue, Mar 11, 2025 at 12:41 PM Miguel Ojeda
<miguel.ojeda.sandonis@xxxxxxxxx> wrote:
>
> On Tue, Mar 11, 2025 at 8:09 PM Ramon de C Valle <rcvalle@xxxxxxxxxx> wrote:
> >
> > I've submitted a PR for it:
> > https://github.com/rust-lang/rust/pull/138368. Let me know if you're
> > able to give it a try.
>
> Thanks Ramon, that was quick!
>
> Left a comment there and linked it -- if you meant to ask Peter, then
> I guess it would be easiest for him to use the first nightly that has
> it as a `-Z` flag.
>
> i.e. I think it is simple enough to land it as-is, especially if we
> add the quick check I suggested.
Left a note there. Let me know what you think. Yes, I guess we could
just check the next nightly that has those changes.
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