diff options
| author | Sami Tolvanen <samitolvanen@google.com> | 2025-01-03 17:37:05 +0000 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2025-01-18 08:51:48 +0900 |
| commit | ac61506bf2d1a6766d98b7d94b0c7b2134a0806a (patch) | |
| tree | 2075c9bd881f8f8bff7aa1186775744fefe1b314 /init | |
| parent | 272f8a6d625a0cf7fba9c5af5202edc84dee326c (diff) | |
rust: Use gendwarfksyms + extended modversions for CONFIG_MODVERSIONS
Previously, two things stopped Rust from using MODVERSIONS:
1. Rust symbols are occasionally too long to be represented in the
original versions table
2. Rust types cannot be properly hashed by the existing genksyms
approach because:
* Looking up type definitions in Rust is more complex than C
* Type layout is potentially dependent on the compiler in Rust,
not just the source type declaration.
CONFIG_EXTENDED_MODVERSIONS addresses the first point, and
CONFIG_GENDWARFKSYMS the second. If Rust wants to use MODVERSIONS, allow
it to do so by selecting both features.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Co-developed-by: Matthew Maurer <mmaurer@google.com>
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index a20e6efd3f0f..2cfbefe0933e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1956,7 +1956,8 @@ config RUST bool "Rust support" depends on HAVE_RUST depends on RUST_IS_AVAILABLE - depends on !MODVERSIONS + select EXTENDED_MODVERSIONS if MODVERSIONS + depends on !MODVERSIONS || GENDWARFKSYMS depends on !GCC_PLUGIN_RANDSTRUCT depends on !RANDSTRUCT depends on !DEBUG_INFO_BTF || PAHOLE_HAS_LANG_EXCLUDE |