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| author | Neal Gompa <neal@gompa.dev> | 2024-07-31 08:54:28 -0400 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2024-08-18 23:10:53 +0200 |
| commit | f1385dc670fe66860bcec5dcba215364bf71b807 (patch) | |
| tree | 971dfbf821a147265eef508b541df03725062862 /init | |
| parent | 7bc186731e87482662c4f86da455f435fe838fb6 (diff) | |
| download | lwn-f1385dc670fe66860bcec5dcba215364bf71b807.tar.gz lwn-f1385dc670fe66860bcec5dcba215364bf71b807.zip | |
init/Kconfig: Only block on RANDSTRUCT for RUST
When enabling Rust in the kernel, we only need to block on the
RANDSTRUCT feature and GCC plugin. The rest of the GCC plugins
are reasonably safe to enable.
[ Originally (years ago) we only had this restriction, but we ended up
restricting also the rest of the GCC plugins 1) to be on the safe side,
2) since compiler plugin support could be going away in the kernel and
3) since mixed builds are best effort so far; so I asked Neal about
his experience enabling the other plugins -- Neal says:
When I originally wrote this patch two years ago to get things
working, Fedora used all the GCC plugins, so I was trying to get GCC +
Rust to work while minimizing the delta on build differences. This was
the combination that worked. We've been carrying this patch in the
Asahi tree for a year now. And while Fedora does not currently have
GCC plugins enabled because it caused issues with some third-party
modules (I think it was the NVIDIA driver, but I'm not sure), it was
around long enough for me to know with some confidence that it was
fine this way.
- Miguel ]
Signed-off-by: Neal Gompa <neal@gompa.dev>
Link: https://lore.kernel.org/r/20240731125615.3368813-1-neal@gompa.dev
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index 5783a0b87517..839c83034006 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1900,7 +1900,7 @@ config RUST depends on RUST_IS_AVAILABLE depends on !CFI_CLANG depends on !MODVERSIONS - depends on !GCC_PLUGINS + depends on !GCC_PLUGIN_RANDSTRUCT depends on !RANDSTRUCT depends on !SHADOW_CALL_STACK depends on !DEBUG_INFO_BTF || PAHOLE_HAS_LANG_EXCLUDE |