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Sat, 04 Apr 2026 05:16:33 -0700 (PDT) From: "Mukesh Kumar Chaurasiya (IBM)" To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, peterz@infradead.org, jpoimboe@kernel.org, jbaron@akamai.com, aliceryhl@google.com, rostedt@goodmis.org, ardb@kernel.org, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, dakr@kernel.org, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, justinstitt@google.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: "Mukesh Kumar Chaurasiya (IBM)" Subject: [PATCH V9 1/4] rust: Fix "multiple candidates for rmeta dependency core" error Date: Sat, 4 Apr 2026 17:46:07 +0530 Message-ID: <20260404121610.1956528-2-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260404121610.1956528-1-mkchauras@gmail.com> References: <20260404121610.1956528-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When building Rust code with LLVM=3D1 with -j1, rustc was encountering an error: "multiple candidates for `rmeta` dependency `core` found", with two candidates: 1. The host's standard library from the rustup toolchain 2. The kernel's custom libcore.rmeta in the rust/ directory This occurred because the build system was using `-L$(objtree)/rust` for host library builds (proc_macro2, quote, syn), which caused rustc to search the rust/ directory. During this search, rustc would find both the kernel's custom libcore.rmeta and gain access to the host's standard library, creating a conflict. The solution is to separate host libraries into a dedicated rust/host/ subdirectory and use `-L$(objtree)/rust/host` for host builds instead of `-L$(objtree)/rust`. This ensures that: 1. Host library builds (proc_macro2, quote, syn) only search rust/host/ and never encounter the kernel's libcore.rmeta 2. Proc macro builds use `-L$(objtree)/rust/host` to find their dependencies Special handling is added for rustdoc-pin_init, which is a host build (to access the alloc crate) but depends on proc macros from the main rust/ directory. It uses explicit `--extern` paths with absolute paths to reference the proc macros without adding `-L$(objtree)/rust`, which would reintroduce the conflict. The rust/host/ directory is added to clean-files to ensure it's removed during `make clean`. As there is a lot going on, here's a summary of changes: - Add clean-files :=3D host/ to clean the generated directory - Change host library targets from lib*.rlib to host/lib*.rlib - Update cmd_rustc_procmacrolibrary to create host/ directory - Update cmd_rustc_procmacro to use -L$(objtree)/rust/host - Update cmd_rustdoc to use -L$(objtree)/rust/host for host builds - Update rustdoc-pin_init to use explicit --extern paths for proc macros as pin-init also needs alloc crate from -L$(objtree)/rust. So the proc macros needs an absolute path Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- rust/Makefile | 57 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 35 insertions(+), 22 deletions(-) diff --git a/rust/Makefile b/rust/Makefile index 9801af2e1e02..5f726a332d9e 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -3,6 +3,9 @@ # Where to place rustdoc generated documentation rustdoc_output :=3D $(objtree)/Documentation/output/rust/rustdoc =20 +# Clean generated host directory +clean-files :=3D host/ + obj-$(CONFIG_RUST) +=3D core.o compiler_builtins.o ffi.o always-$(CONFIG_RUST) +=3D exports_core_generated.h =20 @@ -27,7 +30,7 @@ endif =20 obj-$(CONFIG_RUST) +=3D exports.o =20 -always-$(CONFIG_RUST) +=3D libproc_macro2.rlib libquote.rlib libsyn.rlib +always-$(CONFIG_RUST) +=3D host/libproc_macro2.rlib host/libquote.rlib hos= t/libsyn.rlib =20 always-$(CONFIG_RUST_KERNEL_DOCTESTS) +=3D doctests_kernel_generated.rs always-$(CONFIG_RUST_KERNEL_DOCTESTS) +=3D doctests_kernel_generated_kunit= .c @@ -150,7 +153,7 @@ quiet_cmd_rustdoc =3D RUSTDOC $(if $(rustdoc_host),H, )= $< OBJTREE=3D$(abspath $(objtree)) \ $(RUSTDOC) $(filter-out $(skip_flags) --remap-path-prefix=3D% --remap-pat= h-scope=3D%, \ $(if $(rustdoc_host),$(rust_common_flags),$(rust_flags))) \ - $(rustc_target_flags) -L$(objtree)/$(obj) \ + $(rustc_target_flags) -L$(objtree)/$(obj)$(if $(rustdoc_host),/host) \ -Zunstable-options --generate-link-to-definition \ --output $(rustdoc_output) \ --crate-name $(subst rustdoc-,,$@) \ @@ -193,13 +196,15 @@ rustdoc-proc_macro2: $(src)/proc-macro2/lib.rs rustdo= c-clean FORCE +$(call if_changed,rustdoc) =20 rustdoc-quote: private rustdoc_host =3D yes -rustdoc-quote: private rustc_target_flags =3D $(quote-flags) +rustdoc-quote: private rustc_target_flags =3D $(quote-flags) \ + --extern proc_macro2 rustdoc-quote: private skip_flags =3D $(quote-skip_flags) rustdoc-quote: $(src)/quote/lib.rs rustdoc-clean rustdoc-proc_macro2 FORCE +$(call if_changed,rustdoc) =20 rustdoc-syn: private rustdoc_host =3D yes -rustdoc-syn: private rustc_target_flags =3D $(syn-flags) +rustdoc-syn: private rustc_target_flags =3D $(syn-flags) \ + --extern proc_macro2 --extern quote rustdoc-syn: $(src)/syn/lib.rs rustdoc-clean rustdoc-quote FORCE +$(call if_changed,rustdoc) =20 @@ -236,7 +241,10 @@ rustdoc-pin_init_internal: $(src)/pin-init/internal/sr= c/lib.rs \ +$(call if_changed,rustdoc) =20 rustdoc-pin_init: private rustdoc_host =3D yes -rustdoc-pin_init: private rustc_target_flags =3D $(pin_init-flags) \ +rustdoc-pin_init: private rustc_target_flags =3D \ + --extern pin_init_internal=3D$(abspath $(objtree)/$(obj)/$(libpin_init= _internal_name)) \ + --extern macros=3D$(abspath $(objtree)/$(obj)/$(libmacros_name)) \ + $(call cfgs-to-flags,$(pin_init-cfgs)) \ --extern alloc --cfg feature=3D\"alloc\" rustdoc-pin_init: $(src)/pin-init/src/lib.rs rustdoc-pin_init_internal \ rustdoc-macros FORCE @@ -525,48 +533,53 @@ $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FO= RCE =20 quiet_cmd_rustc_procmacrolibrary =3D $(RUSTC_OR_CLIPPY_QUIET) PL $@ cmd_rustc_procmacrolibrary =3D \ + mkdir -p $(dir $@); \ $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ $(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \ --emit=3Ddep-info=3D$(depfile) --emit=3Dlink=3D$@ --crate-type rlib -O \ - --out-dir $(objtree)/$(obj) -L$(objtree)/$(obj) \ --crate-name $(patsubst lib%.rlib,%,$(notdir $@)) $< =20 -$(obj)/libproc_macro2.rlib: private skip_clippy =3D 1 -$(obj)/libproc_macro2.rlib: private rustc_target_flags =3D $(proc_macro2-f= lags) -$(obj)/libproc_macro2.rlib: $(src)/proc-macro2/lib.rs FORCE +$(obj)/host/libproc_macro2.rlib: private skip_clippy =3D 1 +$(obj)/host/libproc_macro2.rlib: private rustc_target_flags =3D $(proc_mac= ro2-flags) +$(obj)/host/libproc_macro2.rlib: $(src)/proc-macro2/lib.rs FORCE +$(call if_changed_dep,rustc_procmacrolibrary) =20 -$(obj)/libquote.rlib: private skip_clippy =3D 1 -$(obj)/libquote.rlib: private skip_flags =3D $(quote-skip_flags) -$(obj)/libquote.rlib: private rustc_target_flags =3D $(quote-flags) -$(obj)/libquote.rlib: $(src)/quote/lib.rs $(obj)/libproc_macro2.rlib FORCE +$(obj)/host/libquote.rlib: private skip_clippy =3D 1 +$(obj)/host/libquote.rlib: private skip_flags =3D $(quote-skip_flags) +$(obj)/host/libquote.rlib: private rustc_target_flags =3D $(quote-flags) \ + -L$(objtree)/$(obj)/host --extern proc_macro2 +$(obj)/host/libquote.rlib: $(src)/quote/lib.rs $(obj)/host/libproc_macro2.= rlib FORCE +$(call if_changed_dep,rustc_procmacrolibrary) =20 -$(obj)/libsyn.rlib: private skip_clippy =3D 1 -$(obj)/libsyn.rlib: private rustc_target_flags =3D $(syn-flags) -$(obj)/libsyn.rlib: $(src)/syn/lib.rs $(obj)/libquote.rlib FORCE +$(obj)/host/libsyn.rlib: private skip_clippy =3D 1 +$(obj)/host/libsyn.rlib: private rustc_target_flags =3D $(syn-flags) \ + -L$(objtree)/$(obj)/host --extern proc_macro2 --extern quote +$(obj)/host/libsyn.rlib: $(src)/syn/lib.rs $(obj)/host/libquote.rlib FORCE +$(call if_changed_dep,rustc_procmacrolibrary) =20 quiet_cmd_rustc_procmacro =3D $(RUSTC_OR_CLIPPY_QUIET) P $@ cmd_rustc_procmacro =3D \ - $(RUSTC_OR_CLIPPY) $(rust_common_flags) $(rustc_target_flags) \ + $(RUSTC_OR_CLIPPY) $(rust_common_flags) \ -Clinker-flavor=3Dgcc -Clinker=3D$(HOSTCC) \ -Clink-args=3D'$(call escsq,$(KBUILD_PROCMACROLDFLAGS))' \ --emit=3Ddep-info=3D$(depfile) --emit=3Dlink=3D$@ --extern proc_macro \ - --crate-type proc-macro -L$(objtree)/$(obj) \ + --crate-type proc-macro \ + -L$(objtree)/$(obj)/host \ --crate-name $(patsubst lib%.$(libmacros_extension),%,$(notdir $@)) \ - @$(objtree)/include/generated/rustc_cfg $< + @$(objtree)/include/generated/rustc_cfg \ + $(rustc_target_flags) \ + $< =20 # Procedural macros can only be used with the `rustc` that compiled it. $(obj)/$(libmacros_name): private rustc_target_flags =3D \ --extern proc_macro2 --extern quote --extern syn -$(obj)/$(libmacros_name): $(src)/macros/lib.rs $(obj)/libproc_macro2.rlib \ - $(obj)/libquote.rlib $(obj)/libsyn.rlib FORCE +$(obj)/$(libmacros_name): $(src)/macros/lib.rs $(obj)/host/libproc_macro2.= rlib \ + $(obj)/host/libquote.rlib $(obj)/host/libsyn.rlib FORCE +$(call if_changed_dep,rustc_procmacro) =20 $(obj)/$(libpin_init_internal_name): private rustc_target_flags =3D $(pin_= init_internal-flags) $(obj)/$(libpin_init_internal_name): $(src)/pin-init/internal/src/lib.rs \ - $(obj)/libproc_macro2.rlib $(obj)/libquote.rlib $(obj)/libsyn.rlib FOR= CE + $(obj)/host/libproc_macro2.rlib $(obj)/host/libquote.rlib $(obj)/host/= libsyn.rlib FORCE +$(call if_changed_dep,rustc_procmacro) =20 # `rustc` requires `-Zunstable-options` to use custom target specifications --=20 2.53.0 From nobody Sun Jun 14 17:33:46 2026 Received: from mail-pj1-f46.google.com (mail-pj1-f46.google.com [209.85.216.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9CA2754654 for ; 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charset="utf-8" Added support for a new macro ARCH_STATIC_BRANCH_ASM in powerpc to avoid duplication of inline asm between C and Rust. This is inline with 'commit aecaf181651c ("jump_label: adjust inline asm to be cons= istent")' Co-developed-by: Madhavan Srinivasan Signed-off-by: Madhavan Srinivasan Reviewed-by: Alice Ryhl Reviewed-by: Christophe Leroy (CS GROUP) Reviewed-by: Gary Guo Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- arch/powerpc/include/asm/jump_label.h | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/a= sm/jump_label.h index d4eaba459a0e..3016e9c8d6bc 100644 --- a/arch/powerpc/include/asm/jump_label.h +++ b/arch/powerpc/include/asm/jump_label.h @@ -15,14 +15,20 @@ #define JUMP_ENTRY_TYPE stringify_in_c(FTR_ENTRY_LONG) #define JUMP_LABEL_NOP_SIZE 4 =20 +#define JUMP_TABLE_ENTRY(key, label) \ + ".pushsection __jump_table, \"aw\" \n\t" \ + ".long 1b - ., " label " - . \n\t" \ + JUMP_ENTRY_TYPE key " - . \n\t" \ + ".popsection \n\t" + +#define ARCH_STATIC_BRANCH_ASM(key, label) \ + "1: nop \n\t" \ + JUMP_TABLE_ENTRY(key, label) + static __always_inline bool arch_static_branch(struct static_key *key, boo= l branch) { - asm goto("1:\n\t" - "nop # arch_static_branch\n\t" - ".pushsection __jump_table, \"aw\"\n\t" - ".long 1b - ., %l[l_yes] - .\n\t" - JUMP_ENTRY_TYPE "%c0 - .\n\t" - ".popsection \n\t" + asm goto( + ARCH_STATIC_BRANCH_ASM("%c0", "%l[l_yes]") : : "i" (&((char *)key)[branch]) : : l_yes); 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Sat, 04 Apr 2026 05:16:55 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.160.44]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35de500c42fsm2702745a91.0.2026.04.04.05.16.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Apr 2026 05:16:55 -0700 (PDT) From: "Mukesh Kumar Chaurasiya (IBM)" To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, peterz@infradead.org, jpoimboe@kernel.org, jbaron@akamai.com, aliceryhl@google.com, rostedt@goodmis.org, ardb@kernel.org, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, dakr@kernel.org, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, justinstitt@google.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: Link Mauve , "Mukesh Kumar Chaurasiya (IBM)" Subject: [PATCH V9 3/4] rust: Add PowerPC support Date: Sat, 4 Apr 2026 17:46:09 +0530 Message-ID: <20260404121610.1956528-4-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260404121610.1956528-1-mkchauras@gmail.com> References: <20260404121610.1956528-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Link Mauve For now only Big Endian 32-bit PowerPC is supported, as that is the only hardware I have. This has been tested on the Nintendo Wii so far, but I plan on also using it on the GameCube, Wii U and Apple G4. These changes aren=E2=80=99t the only ones required to get the kernel to co= mpile and link on PowerPC, libcore will also have to be changed to not use integer division to format u64, u128 and core::time::Duration, otherwise __udivdi3() and __umoddi3() will have to be added. I have tested this change by replacing the three implementations with unimplemented!() and it linked just fine. Signed-off-by: Link Mauve Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- arch/powerpc/Kconfig | 1 + arch/powerpc/Makefile | 2 ++ rust/Makefile | 4 +++- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 10240cb80904..1246b3add8ff 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -284,6 +284,7 @@ config PPC select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ + select HAVE_RUST if PPC32 select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT= _CALLS select HAVE_SETUP_PER_CPU_AREA if PPC64 diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index a58b1029592c..589613eaa5dc 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -61,6 +61,8 @@ else KBUILD_LDFLAGS_MODULE +=3D $(objtree)/arch/powerpc/lib/crtsavres.o endif =20 +KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc-unknown-linux-gnu + ifdef CONFIG_CPU_LITTLE_ENDIAN KBUILD_CPPFLAGS +=3D -mlittle-endian KBUILD_LDFLAGS +=3D -EL diff --git a/rust/Makefile b/rust/Makefile index 5f726a332d9e..04d8a849c6e4 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -410,13 +410,15 @@ bindgen_skip_c_flags :=3D -mno-fp-ret-in-387 -mprefer= red-stack-boundary=3D% \ -fstrict-flex-arrays=3D% -fmin-function-alignment=3D% \ -fzero-init-padding-bits=3D% -mno-fdpic \ -fdiagnostics-show-context -fdiagnostics-show-context=3D% \ - --param=3D% --param asan-% -fno-isolate-erroneous-paths-dereference + --param=3D% --param asan-% -fno-isolate-erroneous-paths-dereference \ + -ffixed-r2 -mmultiple -mno-readonly-in-sdata =20 # Derived from `scripts/Makefile.clang`. 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Sat, 04 Apr 2026 05:17:05 -0700 (PDT) Received: from li-1a3e774c-28e4-11b2-a85c-acc9f2883e29.ibm.com.com ([106.51.160.44]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35de500c42fsm2702745a91.0.2026.04.04.05.16.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Apr 2026 05:17:05 -0700 (PDT) From: "Mukesh Kumar Chaurasiya (IBM)" To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, peterz@infradead.org, jpoimboe@kernel.org, jbaron@akamai.com, aliceryhl@google.com, rostedt@goodmis.org, ardb@kernel.org, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, dakr@kernel.org, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, justinstitt@google.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, llvm@lists.linux.dev Cc: "Mukesh Kumar Chaurasiya (IBM)" , Link Mauve , Venkat Rao Bagalkote Subject: [PATCH V9 4/4] powerpc: Enable Rust for ppc64le Date: Sat, 4 Apr 2026 17:46:10 +0530 Message-ID: <20260404121610.1956528-5-mkchauras@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260404121610.1956528-1-mkchauras@gmail.com> References: <20260404121610.1956528-1-mkchauras@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Enabling rust support for ppc64le. Tested on pseries Power11: =E2=95=B0=E2=94=80=E2=9D=AF dmesg | grep rust [ 0.225728] Initialise system trusted keyrings [ 0.270961] rust_minimal: Rust minimal sample (init) [ 0.270968] rust_minimal: Am I built-in? true [ 0.270974] rust_minimal: test_parameter: 1 [ 0.270983] rust_misc_device: Initialising Rust Misc Device Sample [ 0.271012] rust_print: Rust printing macros sample (init) [ 0.271019] rust_print: Emergency message (level 0) without args [ 0.271023] rust_print: Alert message (level 1) without args [ 0.271026] rust_print: Critical message (level 2) without args [ 0.271030] rust_print: Error message (level 3) without args [ 0.271033] rust_print: Warning message (level 4) without args [ 0.271037] rust_print: Notice message (level 5) without args [ 0.271040] rust_print: Info message (level 6) without args [ 0.271043] rust_print: A line that is continued without args [ 0.271054] rust_print: Emergency message (level 0) with args [ 0.271064] rust_print: Alert message (level 1) with args [ 0.271072] rust_print: Critical message (level 2) with args [ 0.271077] rust_print: Error message (level 3) with args [ 0.271083] rust_print: Warning message (level 4) with args [ 0.271091] rust_print: Notice message (level 5) with args [ 0.271097] rust_print: Info message (level 6) with args [ 0.271102] rust_print: A line that is continued with args [ 0.271110] rust_print: 1 [ 0.271113] rust_print: "hello, world" [ 0.271121] rust_print: [samples/rust/rust_print_main.rs:35:5] c =3D "he= llo, world" [ 0.271129] rust_print: Arc says 42 [ 0.271130] rust_print: Arc says hello, world [ 0.271136] rust_print: "hello, world" [ 0.271198] usbcore: registered new interface driver rust_driver_usb [ 0.271207] rust_faux_driver: Initialising Rust Faux Device Sample [ 0.271227] faux_driver rust-faux-sample-device: Hello from faux device! [ 0.271297] rust_configfs: Rust configfs sample (init) Reviewed-by: Link Mauve Tested-by: Link Mauve Reviewed-by: Christophe Leroy (CS GROUP) Tested-by: Venkat Rao Bagalkote Link: https://github.com/Rust-for-Linux/linux/issues/105 Link: https://github.com/linuxppc/issues/issues/451 Signed-off-by: Mukesh Kumar Chaurasiya (IBM) --- arch/powerpc/Kconfig | 1 + arch/powerpc/Makefile | 7 ++++++- rust/Makefile | 6 ++++++ 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 1246b3add8ff..a5f50434daf3 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -285,6 +285,7 @@ config PPC select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ select HAVE_RUST if PPC32 + select HAVE_RUST if PPC64 && CPU_LITTLE_ENDIAN select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT= _CALLS select HAVE_SETUP_PER_CPU_AREA if PPC64 diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 589613eaa5dc..9385db478c59 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -61,7 +61,12 @@ else KBUILD_LDFLAGS_MODULE +=3D $(objtree)/arch/powerpc/lib/crtsavres.o endif =20 -KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc-unknown-linux-gnu +ifdef CONFIG_PPC64 +KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc64le-unknown-linux-gnu +KBUILD_RUSTFLAGS +=3D -Ctarget-feature=3D-mma,-vsx,-hard-float,-altivec +else +KBUILD_RUSTFLAGS +=3D --target=3Dpowerpc-unknown-linux-gnu +endif =20 ifdef CONFIG_CPU_LITTLE_ENDIAN KBUILD_CPPFLAGS +=3D -mlittle-endian diff --git a/rust/Makefile b/rust/Makefile index 04d8a849c6e4..92c1f6fe69e9 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -418,7 +418,13 @@ BINDGEN_TARGET_x86 :=3D x86_64-linux-gnu BINDGEN_TARGET_arm64 :=3D aarch64-linux-gnu BINDGEN_TARGET_arm :=3D arm-linux-gnueabi BINDGEN_TARGET_loongarch :=3D loongarch64-linux-gnusf + +ifdef CONFIG_PPC64 +BINDGEN_TARGET_powerpc :=3D powerpc64le-linux-gnu +else BINDGEN_TARGET_powerpc :=3D powerpc-linux-gnu +endif + BINDGEN_TARGET_um :=3D $(BINDGEN_TARGET_$(SUBARCH)) BINDGEN_TARGET :=3D $(BINDGEN_TARGET_$(SRCARCH)) =20 --=20 2.53.0