mirror of
https://github.com/torvalds/linux.git
synced 2024-11-21 19:41:42 +00:00
Rust fixes for v6.12 (2nd)
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.
-----BEGIN PGP SIGNATURE-----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=Y7fL
-----END PGP SIGNATURE-----
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
This commit is contained in:
Linus Torvalds
commit
4e6bd4a33a
26
arch/Kconfig
26
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"
|
||||
|
||||
@ -62,7 +62,7 @@ config LLD_VERSION
|
||||
|
||||
config RUSTC_VERSION
|
||||
int
|
||||
default $(shell,$(srctree)/scripts/rustc-version.sh $(RUSTC))
|
||||
default $(rustc-version)
|
||||
help
|
||||
It does not depend on `RUST` since that one may need to use the version
|
||||
in a `depends on`.
|
||||
@ -78,6 +78,10 @@ config RUST_IS_AVAILABLE
|
||||
In particular, the Makefile target 'rustavailable' is useful to check
|
||||
why the Rust toolchain is not being detected.
|
||||
|
||||
config RUSTC_LLVM_VERSION
|
||||
int
|
||||
default $(rustc-llvm-version)
|
||||
|
||||
config CC_CAN_LINK
|
||||
bool
|
||||
default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(m64-flag)) if 64BIT
|
||||
@ -1946,7 +1950,7 @@ config RUST
|
||||
depends on !GCC_PLUGIN_RANDSTRUCT
|
||||
depends on !RANDSTRUCT
|
||||
depends on !DEBUG_INFO_BTF || PAHOLE_HAS_LANG_EXCLUDE
|
||||
depends on !CFI_CLANG || RUSTC_VERSION >= 107900 && HAVE_CFI_ICALL_NORMALIZE_INTEGERS
|
||||
depends on !CFI_CLANG || HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC
|
||||
select CFI_ICALL_NORMALIZE_INTEGERS if CFI_CLANG
|
||||
depends on !CALL_PADDING || RUSTC_VERSION >= 108100
|
||||
depends on !KASAN_SW_TAGS
|
||||
|
||||
@ -3060,7 +3060,7 @@ config RUST_BUILD_ASSERT_ALLOW
|
||||
bool "Allow unoptimized build-time assertions"
|
||||
depends on RUST
|
||||
help
|
||||
Controls how are `build_error!` and `build_assert!` handled during build.
|
||||
Controls how `build_error!` and `build_assert!` are handled during the build.
|
||||
|
||||
If calls to them exist in the binary, it may indicate a violated invariant
|
||||
or that the optimizer failed to verify the invariant during compilation.
|
||||
|
||||
@ -65,6 +65,9 @@ cc-option-bit = $(if-success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null,$
|
||||
m32-flag := $(cc-option-bit,-m32)
|
||||
m64-flag := $(cc-option-bit,-m64)
|
||||
|
||||
rustc-version := $(shell,$(srctree)/scripts/rustc-version.sh $(RUSTC))
|
||||
rustc-llvm-version := $(shell,$(srctree)/scripts/rustc-llvm-version.sh $(RUSTC))
|
||||
|
||||
# $(rustc-option,<flag>)
|
||||
# Return y if the Rust compiler supports <flag>, n otherwise
|
||||
# Calls to this should be guarded so that they are not evaluated if
|
||||
|
||||
@ -53,13 +53,11 @@ cc-option = $(call __cc-option, $(CC),\
|
||||
|
||||
# cc-option-yn
|
||||
# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
|
||||
cc-option-yn = $(call try-run,\
|
||||
$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
|
||||
cc-option-yn = $(if $(call cc-option,$1),y,n)
|
||||
|
||||
# cc-disable-warning
|
||||
# Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
|
||||
cc-disable-warning = $(call try-run,\
|
||||
$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
|
||||
cc-disable-warning = $(if $(call cc-option,-W$(strip $1)),-Wno-$(strip $1))
|
||||
|
||||
# gcc-min-version
|
||||
# Usage: cflags-$(call gcc-min-version, 70100) += -foo
|
||||
@ -75,8 +73,11 @@ ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3))
|
||||
|
||||
# __rustc-option
|
||||
# Usage: MY_RUSTFLAGS += $(call __rustc-option,$(RUSTC),$(MY_RUSTFLAGS),-Cinstrument-coverage,-Zinstrument-coverage)
|
||||
# TODO: remove RUSTC_BOOTSTRAP=1 when we raise the minimum GNU Make version to 4.4
|
||||
__rustc-option = $(call try-run,\
|
||||
$(1) $(2) $(3) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",$(3),$(4))
|
||||
echo '#![allow(missing_docs)]#![feature(no_core)]#![no_core]' | RUSTC_BOOTSTRAP=1\
|
||||
$(1) --sysroot=/dev/null $(filter-out --sysroot=/dev/null,$(2)) $(3)\
|
||||
--crate-type=rlib --out-dir=$(TMPOUT) --emit=obj=- - >/dev/null,$(3),$(4))
|
||||
|
||||
# rustc-option
|
||||
# Usage: rustflags-y += $(call rustc-option,-Cinstrument-coverage,-Zinstrument-coverage)
|
||||
@ -85,5 +86,4 @@ rustc-option = $(call __rustc-option, $(RUSTC),\
|
||||
|
||||
# rustc-option-yn
|
||||
# Usage: flag := $(call rustc-option-yn,-Cinstrument-coverage)
|
||||
rustc-option-yn = $(call try-run,\
|
||||
$(RUSTC) $(KBUILD_RUSTFLAGS) $(1) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",y,n)
|
||||
rustc-option-yn = $(if $(call rustc-option,$1),y,n)
|
||||
|
||||
22
scripts/rustc-llvm-version.sh
Executable file
22
scripts/rustc-llvm-version.sh
Executable file
@ -0,0 +1,22 @@
|
||||
#!/bin/sh
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
#
|
||||
# Usage: $ ./rustc-llvm-version.sh rustc
|
||||
#
|
||||
# Print the LLVM version that the Rust compiler uses in a 6 digit form.
|
||||
|
||||
# Convert the version string x.y.z to a canonical up-to-6-digits form.
|
||||
get_canonical_version()
|
||||
{
|
||||
IFS=.
|
||||
set -- $1
|
||||
echo $((10000 * $1 + 100 * $2 + $3))
|
||||
}
|
||||
|
||||
if output=$("$@" --version --verbose 2>/dev/null | grep LLVM); then
|
||||
set -- $output
|
||||
get_canonical_version $3
|
||||
else
|
||||
echo 0
|
||||
exit 1
|
||||
fi
|
||||
Loading…
Reference in New Issue
Block a user