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Merge tag 'rust-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

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Pull Rust fixes from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Fix 'rustc-option' (the Makefile one) when cross-compiling that
     leads to build or boot failures in certain configs

   - Work around a Rust compiler bug (already fixed for Rust 1.98.0)
     thats lead to boot failures in certain configs due to missing
     'uwtable' LLVM module flags

   - Support a Rust compiler change (starting with Rust 1.98.0) in the
     unstable target specification JSON files

   - Forbid Rust + arm + KASAN configs, which do not build

  'kernel' crate:

   - Fix NOMMU build by adding a missing helper"

* tag 'rust-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  rust: x86: support Rust >= 1.98.0 target spec
  rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES
  rust: helpers: add is_vmalloc_addr wrapper for NOMMU builds
  rust: kasan/kbuild: fix rustc-option when cross-compiling
  ARM: Do not select HAVE_RUST when KASAN is enabled
This commit is contained in:
Linus Torvalds
2026-06-06 09:44:42 -07:00
parent 76351effa5 905b06d32a
commit d054796f8b
8 changed files with 31 additions and 5 deletions
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2
scripts/Makefile.compiler
View File

@@ -80,7 +80,7 @@ ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3))
# TODO: remove RUSTC_BOOTSTRAP=1 when we raise the minimum GNU Make version to 4.4
__rustc-option = $(call try-run,\
echo '$(pound)![allow(missing_docs)]$(pound)![feature(no_core)]$(pound)![no_core]' | RUSTC_BOOTSTRAP=1\
$(1) --sysroot=/dev/null $(filter-out --sysroot=/dev/null --target=%,$(2)) $(3)\
$(1) --sysroot=/dev/null $(KBUILD_RUSTFLAGS_OPTION_CHKS) $(filter-out --sysroot=/dev/null --target=%target.json,$(2)) $(3)\
--crate-type=rlib --out-dir=$(TMPOUT) --emit=obj=- - >/dev/null,$(3),$(4))
# rustc-option

8
scripts/generate_rust_target.rs
View File

@@ -196,7 +196,9 @@ fn main() {
}
} else if cfg.has("X86_64") {
ts.push("arch", "x86_64");
if cfg.rustc_version_atleast(1, 86, 0) {
if cfg.rustc_version_atleast(1, 98, 0) {
ts.push("rustc-abi", "softfloat");
} else if cfg.rustc_version_atleast(1, 86, 0) {
ts.push("rustc-abi", "x86-softfloat");
}
ts.push(
@@ -236,7 +238,9 @@ fn main() {
panic!("32-bit x86 only works under UML");
}
ts.push("arch", "x86");
if cfg.rustc_version_atleast(1, 86, 0) {
if cfg.rustc_version_atleast(1, 98, 0) {
ts.push("rustc-abi", "softfloat");
} else if cfg.rustc_version_atleast(1, 86, 0) {
ts.push("rustc-abi", "x86-softfloat");
}
ts.push(