gpu: nova-core: export Rust symbols for nova-drm

Export nova-core's Rust symbols so nova-drm can resolve references to it
when loaded as a module.

This is done by generating declarations and EXPORT_SYMBOL_RUST_GPL()
calls for Rust symbols referenced by nova-drm, and compiling them into
the module as `nova_core_exports.o`.

`nova_core_exports.o` declares every Rust symbol as `extern int`.
Running `gendwarfksyms` on it would compute CRCs from those placeholder
types instead of the real Rust ones, so make MODVERSIONS use this shim
only for the export list, and derive CRCs from `nova_core.o`.

This patch is intended to be a workaround until the build system
supports Rust cross-crate dependencies natively.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20260622-nova-exports-v5-2-6191773fc977@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions