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authorLinus Torvalds <torvalds@linux-foundation.org>2024-10-19 08:32:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-10-19 08:32:47 -0700
commit4e6bd4a33a6cf4d2dce9725630ada847a3947c7c (patch)
tree2533733c6a052d20026140dc93df7e7f4e630911 /arch
parent3d5ad2d4eca337e80f38df77de89614aa5aaceb9 (diff)
parent8b8ca9c25fe69c2162e3235c7d6c341127abeed6 (diff)
Merge tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux
Pull rust fixes from Miguel Ojeda: "Toolchain and infrastructure: - Fix several issues with the 'rustc-option' macro. It includes a refactor from Masahiro of three '{cc,rust}-*' macros, which is not a fix but avoids repeating the same commands (which would be several lines in the case of 'rustc-option'). - Fix conditions for 'CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS'. It includes the addition of 'CONFIG_RUSTC_LLVM_VERSION', which is not a fix but is needed for the actual fix. And a trivial grammar fix" * tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux: cfi: fix conditions for HAVE_CFI_ICALL_NORMALIZE_INTEGERS kbuild: rust: add `CONFIG_RUSTC_LLVM_VERSION` kbuild: fix issues with rustc-option kbuild: refactor cc-option-yn, cc-disable-warning, rust-option-yn macros lib/Kconfig.debug: fix grammar in RUST_BUILD_ASSERT_ALLOW
Diffstat (limited to 'arch')
-rw-r--r--arch/Kconfig26
1 files changed, 12 insertions, 14 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 8af374ea1adc..00163e4a237c 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -838,7 +838,7 @@ config CFI_CLANG
config CFI_ICALL_NORMALIZE_INTEGERS
bool "Normalize CFI tags for integers"
depends on CFI_CLANG
- depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS
+ depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG
help
This option normalizes the CFI tags for integer types so that all
integer types of the same size and signedness receive the same CFI
@@ -851,21 +851,19 @@ config CFI_ICALL_NORMALIZE_INTEGERS
This option is necessary for using CFI with Rust. If unsure, say N.
-config HAVE_CFI_ICALL_NORMALIZE_INTEGERS
- def_bool !GCOV_KERNEL && !KASAN
- depends on CFI_CLANG
+config HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG
+ def_bool y
depends on $(cc-option,-fsanitize=kcfi -fsanitize-cfi-icall-experimental-normalize-integers)
- help
- Is CFI_ICALL_NORMALIZE_INTEGERS supported with the set of compilers
- currently in use?
+ # With GCOV/KASAN we need this fix: https://github.com/llvm/llvm-project/pull/104826
+ depends on CLANG_VERSION >= 190000 || (!GCOV_KERNEL && !KASAN_GENERIC && !KASAN_SW_TAGS)
- This option defaults to false if GCOV or KASAN is enabled, as there is
- an LLVM bug that makes normalized integers tags incompatible with
- KASAN and GCOV. Kconfig currently does not have the infrastructure to
- detect whether your rustc compiler contains the fix for this bug, so
- it is assumed that it doesn't. If your compiler has the fix, you can
- explicitly enable this option in your config file. The Kconfig logic
- needed to detect this will be added in a future kernel release.
+config HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC
+ def_bool y
+ depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG
+ depends on RUSTC_VERSION >= 107900
+ # With GCOV/KASAN we need this fix: https://github.com/rust-lang/rust/pull/129373
+ depends on (RUSTC_LLVM_VERSION >= 190000 && RUSTC_VERSION >= 108200) || \
+ (!GCOV_KERNEL && !KASAN_GENERIC && !KASAN_SW_TAGS)
config CFI_PERMISSIVE
bool "Use CFI in permissive mode"