Changes in Makefile.compiler

d054796f8bb7d0aa9068d83feda76fe3b215f991 - Merge tag 'rust-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Sat, 06 Jun 2026 18:44:42 +0200

Merge tag 'rust-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linuxPull 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 List of files: /linux/scripts/Makefile.compiler

4a44b17406cb5a93f90af3df9392b3a45eb336fb - rust: kasan/kbuild: fix rustc-option when cross-compiling

Thu, 07 May 2026 13:14:42 +0200

rust: kasan/kbuild: fix rustc-option when cross-compilingThe Makefile version of rustc-option currently checks whether the optionexists for the host target instead of the target actually being compiledfor. It was done this way in commit 46e24a545cdb ("rust: kasan/kbuild:fix missing flags on first build") to avoid a circular dependency ontarget.json. However, because of this, rustc-option currently does notfunction when cross-compiling from x86_64 to aarch64 ifCONFIG_SHADOW_CALL_STACK is enabled. This is because KBUILD_RUSTFLAGScontains -Zfixed-x18 under this configuration. Since that flag does notexist on the host target, rustc-option runs into a compilation failureevery time, leading to all flags being rejected as unsupported.To fix this, update rustc-option to pass a --target parameter so thatthe host target is not used. For targets using target.json, use abuilt-in target that is as close as possible to the target created withtarget.json to avoid the circular dependency on target.json.One scenario where this causes a boot failure:* Cross-compiled from x86_64 to aarch64.* With CONFIG_SHADOW_CALL_STACK=y* With CONFIG_KASAN_SW_TAGS=y* With CONFIG_KASAN_INLINE=nThen the resulting kernel image will fail to boot when it first callsinto Rust code with a crash along the lines of "Unable to handle kernelpaging request at virtual address 0ffffffc08541796". This is because thecall threshold is not specified, so rustc will inline kasan operations,but the kasan shadow offset is not specified, which leads to the inlinedkasan instructions being incorrect.Note that the -Zsanitizer=kernel-hwaddress parameter itself does notlead to a rustc-option failure despite being aarch64-specific becauseRUSTFLAGS_KASAN has not yet been added to KBUILD_RUSTFLAGS whenrustc-option is evaluated by the kasan Makefile.Cc: stable@vger.kernel.orgFixes: 46e24a545cdb ("rust: kasan/kbuild: fix missing flags on first build")Signed-off-by: Alice Ryhl Link: https://patch.msgid.link/20260507-rustc-option-cross-v2-1-2f650a49c2b5@google.com[ Edited slightly: - Reset variable to avoid using the environment. - Use a simply expanded variable flavor for simplicity. - Export variable so that behavior in sub-`make`s is consistent. This matches other variables. - Miguel ]Signed-off-by: Miguel Ojeda List of files: /linux/scripts/Makefile.compiler

f088104d837a991c65e51fa30bb4196169b3244d - Merge drm/drm-next into drm-intel-gt-next

Tue, 16 Sep 2025 12:53:20 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerge in order to get the commit: 048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")To drm-intel-gt-next as there are followup fixes to be applied.Signed-off-by: Joonas Lahtinen List of files: /linux/scripts/Makefile.compiler

ab93e0dd72c37d378dd936f031ffb83ff2bd87ce - Merge branch 'next' into for-linus

Wed, 06 Aug 2025 19:08:54 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.17 merge window. List of files: /linux/scripts/Makefile.compiler

a7bee4e7f78089c101be2ad51f4b5ec64782053e - Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next

Mon, 04 Aug 2025 08:28:48 +0200

Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into nextMerge an immutable branch between MFD, GPIO, Input and PWM to resolveconflicts for the merge window pull request. List of files: /linux/scripts/Makefile.compiler

74f1af95820fc2ee580a775a3a17c416db30b38c - Merge remote-tracking branch 'drm/drm-next' into msm-next

Sun, 29 Jun 2025 04:54:49 +0200

Merge remote-tracking branch 'drm/drm-next' into msm-nextBack-merge drm-next to (indirectly) get arm-smmu updates for makingstall-on-fault more reliable.Signed-off-by: Rob Clark List of files: /linux/scripts/Makefile.compiler

c598d5eb9fb331ba17bc9ad67ae9a2231ca5aca5 - Merge drm/drm-next into drm-misc-next

Wed, 11 Jun 2025 09:01:34 +0200

Merge drm/drm-next into drm-misc-nextBackmerging to forward to v6.16-rc1Signed-off-by: Thomas Zimmermann List of files: /linux/scripts/Makefile.compiler

86e2d052c2320bf12571a5d96b16c2745e1cfc5e - Merge drm/drm-next into drm-xe-next

Mon, 09 Jun 2025 18:26:55 +0200

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 6.16Signed-off-by: Thomas Hellström List of files: /linux/scripts/Makefile.compiler

34c55367af96f62e89221444f04487440ebc6487 - Merge drm/drm-next into drm-intel-next

Mon, 09 Jun 2025 11:40:46 +0200

Merge drm/drm-next into drm-intel-nextSync to v6.16-rc1, among other things to get the fixed size GENMASK_U*()and BIT_U*() macros.Signed-off-by: Jani Nikula List of files: /linux/scripts/Makefile.compiler

bbfd5594756011167b8f8de9a00e0c946afda1e6 - Merge drm/drm-next into drm-intel-gt-next

Wed, 28 May 2025 09:20:17 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).Signed-off-by: Joonas Lahtinen List of files: /linux/scripts/Makefile.compiler

db5302ae571beec635c1a96e7f72926a4e65195e - Merge drm/drm-next into drm-intel-next

Fri, 16 May 2025 09:22:36 +0200

Merge drm/drm-next into drm-intel-nextBackmerge to sync with v6.15-rc, xe, and specifically async flip changesin drm-misc.Signed-off-by: Jani Nikula List of files: /linux/scripts/Makefile.compiler

9d3da7827536b8e41e4188185622816a105b46f7 - Merge tag 'riscv-mw1-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux into for-next

Thu, 05 Jun 2025 20:11:21 +0200

Merge tag 'riscv-mw1-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux into for-nextriscv patches for 6.16-rc1* Implement atomic patching support for ftrace which finally allows to get rid of stop_machine().* Support for kexec_file_load() syscall* Improve module loading time by changing the algorithm that counts the number of plt/got entries in a module.* Zicbop is now used in the kernel to prefetch instructions[Palmer: There's been two rounds of surgery on this one, so as a resultit's a bit different than the PR.]* alex-pr: (734 commits) riscv: Improve Kconfig help for RISCV_ISA_V_PREEMPTIVE MAINTAINERS: Update Atish's email address riscv: hwprobe: export Zabha extension riscv: Make regs_irqs_disabled() more clear perf symbols: Ignore mapping symbols on riscv RISC-V: Kconfig: Fix help text of CMDLINE_EXTEND riscv: module: Optimize PLT/GOT entry counting riscv: Add support for PUD THP riscv: xchg: Prefetch the destination word for sc.w riscv: Add ARCH_HAS_PREFETCH[W] support with Zicbop riscv: Add support for Zicbop riscv: Introduce Zicbop instructions riscv/kexec_file: Fix comment in purgatory relocator riscv: kexec_file: Support loading Image binary file riscv: kexec_file: Split the loading of kernel and others riscv: Documentation: add a description about dynamic ftrace riscv: ftrace: support direct call using call_ops riscv: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS riscv: ftrace: support PREEMPT riscv: add a data fence for CMODX in the kernel mode ...Signed-off-by: Palmer Dabbelt List of files: /linux/scripts/Makefile.compiler

3349e275067f94ffb4141989aed9cbae7409429b - Merge 6.15-rc6 into staging-next

Tue, 13 May 2025 08:37:56 +0200

Merge 6.15-rc6 into staging-nextWe need the staging changes in here as wellSigned-off-by: Greg Kroah-Hartman List of files: /linux/scripts/Makefile.compiler

615dca38c2eae55aff80050275931c87a812b48c - Merge 6.15-rc4 into usb-next

Mon, 28 Apr 2025 10:32:58 +0200

Merge 6.15-rc4 into usb-nextWe need the USB fixes in here as well, and this resolves the followingmerge conflicts that were reported in linux-next: drivers/usb/chipidea/ci_hdrc_imx.c drivers/usb/host/xhci.hReported-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman List of files: /linux/scripts/Makefile.compiler

689835c00ec7b78f3c828e796895661c13584a64 - Merge 6.15-rc4 into tty-next

Mon, 28 Apr 2025 10:13:28 +0200

Merge 6.15-rc4 into tty-nextWe need the tty/serial fixes in here as well.Signed-off-by: Greg Kroah-Hartman List of files: /linux/scripts/Makefile.compiler

4f822ad5ee944ffafc21937a32dd055f1df5c28d - Merge 6.15-rc4 into char-misc-next

Mon, 28 Apr 2025 09:45:00 +0200

Merge 6.15-rc4 into char-misc-nextWe need the char-misc fixes in here as well.Signed-off-by: Greg Kroah-Hartman List of files: /linux/scripts/Makefile.compiler

8330d092f789ca7859042c80cbf3ea496bc53d99 - Merge remote-tracking branch 'torvalds/master' into perf-tools-next

Wed, 07 May 2025 17:51:38 +0200

Merge remote-tracking branch 'torvalds/master' into perf-tools-nextTo pick up fixes from the latest perf-tools pull request from Namhyungand get perf-tools-next in line with thinngs in other areas it uses,like tools/lib/bpf, etc.Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/scripts/Makefile.compiler

4f9786035f9e519db41375818e1d0b5f20da2f10 - Merge branch 'next' into for-linus

Mon, 02 Jun 2025 06:41:07 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.16 merge window. List of files: /linux/scripts/Makefile.compiler

d51b9d81f7883f526b26e3ab903e646274aebeb1 - Merge tag 'v6.15-rc6' into next

Fri, 16 May 2025 01:20:39 +0200

Merge tag 'v6.15-rc6' into nextSync up with mainline to bring in xpad controller changes. List of files: /linux/scripts/Makefile.compiler

dee264c16a6334dcdbea5c186f5ff35f98b1df42 - Merge tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Sat, 31 May 2025 17:16:52 +0200

Merge tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-genericPull compiler version requirement update from Arnd Bergmann: "Require gcc-8 and binutils-2.30 x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree."* tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: Makefile.kcov: apply needed compiler option unconditionally in CFLAGS_KCOV Documentation: update binutils-2.30 version reference gcc-plugins: remove SANCOV gcc plugin Kbuild: remove structleak gcc plugin arm64: drop binutils version checks raid6: skip avx512 checks kbuild: require gcc-8 and binutils-2.30 List of files: /linux/scripts/Makefile.compiler