Re: [PATCH 0/4] initial work on making VMA flags a bitmap

[Lorenzo Stoakes]

+cc Alice - could you help look at this? It seems I have broken the rust
bindings here :)

Thanks!

On Wed, Oct 29, 2025 at 09:07:07PM -0600, Nico Pache wrote:
> Hey Lorenzo,
>
> I put your patchset into the Fedora Koji system to run some CI on it for you.
>
> It failed to build due to what looks like some Rust bindings.
>
> Heres the build: https://koji.fedoraproject.org/koji/taskinfo?taskID=138547842
>
> And x86 build logs:
> https://kojipkgs.fedoraproject.org//work/tasks/7966/138547966/build.log
>
> The error is pretty large but here's a snippet if you want an idea
>
> error[E0425]: cannot find value `VM_READ` in crate `bindings`
>    --> rust/kernel/mm/virt.rs:399:44
>     |
> 399 |     pub const READ: vm_flags_t = bindings::VM_READ as vm_flags_t;
>     |                                            ^^^^^^^ not found in `bindings`
> error[E0425]: cannot find value `VM_WRITE` in crate `bindings`
>    --> rust/kernel/mm/virt.rs:402:45
>     |
> 402 |     pub const WRITE: vm_flags_t = bindings::VM_WRITE as vm_flags_t;
>     |                                             ^^^^^^^^ not found
> in `bindings`
> error[E0425]: cannot find value `VM_EXEC` in crate `bindings`
>      --> rust/kernel/mm/virt.rs:405:44
>       |
>   405 |     pub const EXEC: vm_flags_t = bindings::VM_EXEC as vm_flags_t;
>       |                                            ^^^^^^^ help: a
> constant with a similar name exists: `ET_EXEC`
>       |
>      ::: /builddir/build/BUILD/kernel-6.18.0-build/kernel-6.18-rc3-16-ge53642b87a4f/linux-6.18.0-0.rc3.e53642b87a4f.31.bitvma.fc44.x86_64/rust/bindings/bindings_generated.rs:13881:1
>       |
> 13881 | pub const ET_EXEC: u32 = 2;
>       | ---------------------- similarly named constant `ET_EXEC` defined here
> error[E0425]: cannot find value `VM_SHARED` in crate `bindings`
>    --> rust/kernel/mm/virt.rs:408:46
>     |
> 408 |     pub const SHARED: vm_flags_t = bindings::VM_SHARED as vm_flags_t;
>     |                                              ^^^^^^^^^ not found
> in `bindings`
>
> In the next version Ill do the same and continue with the CI testing for you!

Thanks much appreciated :)

It seems I broke the rust bindings (clearly), have pinged Alice to have a
look!

May try and repro my side to see if there's something trivial that I could
take a look at.

I ran this through mm self tests, allmodconfig + a bunch of other checks
but ofc enabling rust was not one, I should probably update my scripts [0]
to do that too :)

Cheers, Lorenzo

[0]:https://github.com/lorenzo-stoakes/review-scripts