{"id":2225671,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2225671/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260421120958.190430-4-mkchauras@gmail.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.1/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/"},"msgid":"<20260421120958.190430-4-mkchauras@gmail.com>","date":"2026-04-21T12:09:57","name":"[V12,3/4] rust: Add PowerPC support","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"c78a8bfb51e87e080c0eb61df63ec62cb047a2a8","submitter":{"id":92575,"url":"http://patchwork.ozlabs.org/api/1.1/people/92575/?format=json","name":"Mukesh Kumar Chaurasiya","email":"mkchauras@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260421120958.190430-4-mkchauras@gmail.com/mbox/","series":[{"id":500787,"url":"http://patchwork.ozlabs.org/api/1.1/series/500787/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=500787","date":"2026-04-21T12:09:54","name":"Rust support for powerpc","version":12,"mbox":"http://patchwork.ozlabs.org/series/500787/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225671/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225671/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=ia4rDgIV;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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charset=UTF-8","Content-Transfer-Encoding":"8bit","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"From: Link Mauve \n\nFor now only Big Endian 32-bit PowerPC is supported, as that is the only\nhardware I have. This has been tested on the Nintendo Wii so far, but I\nplan on also using it on the GameCube, Wii U and Apple G4.\n\nThese changes aren’t the only ones required to get the kernel to compile\nand link on PowerPC, libcore will also have to be changed to not use\ninteger division to format u64, u128 and core::time::Duration, otherwise\n__udivdi3() and __umoddi3() will have to be added. I have tested this\nchange by replacing the three implementations with unimplemented!() and\nit linked just fine.\n\nSigned-off-by: Link Mauve \nLink: https://github.com/Rust-for-Linux/linux/issues/105\nLink: https://github.com/linuxppc/issues/issues/451\nSigned-off-by: Mukesh Kumar Chaurasiya (IBM) \n---\n arch/powerpc/Kconfig | 1 +\n arch/powerpc/Makefile | 2 ++\n rust/Makefile | 4 +++-\n 3 files changed, 6 insertions(+), 1 deletion(-)","diff":"diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig\nindex e93df95b79e7..4ac897b650d4 100644\n--- a/arch/powerpc/Kconfig\n+++ b/arch/powerpc/Kconfig\n@@ -285,6 +285,7 @@ config PPC\n \tselect HAVE_REGS_AND_STACK_ACCESS_API\n \tselect HAVE_RELIABLE_STACKTRACE\n \tselect HAVE_RSEQ\n+\tselect HAVE_RUST\t\t\tif PPC32\n \tselect HAVE_SAMPLE_FTRACE_DIRECT\tif HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS\n \tselect HAVE_SAMPLE_FTRACE_DIRECT_MULTI\tif HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS\n \tselect HAVE_SETUP_PER_CPU_AREA\t\tif PPC64\ndiff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile\nindex a58b1029592c..589613eaa5dc 100644\n--- a/arch/powerpc/Makefile\n+++ b/arch/powerpc/Makefile\n@@ -61,6 +61,8 @@ else\n KBUILD_LDFLAGS_MODULE += $(objtree)/arch/powerpc/lib/crtsavres.o\n endif\n \n+KBUILD_RUSTFLAGS \t+= --target=powerpc-unknown-linux-gnu\n+\n ifdef CONFIG_CPU_LITTLE_ENDIAN\n KBUILD_CPPFLAGS\t+= -mlittle-endian\n KBUILD_LDFLAGS\t+= -EL\ndiff --git a/rust/Makefile b/rust/Makefile\nindex 2a5428a5503d..c90811a2f564 100644\n--- a/rust/Makefile\n+++ b/rust/Makefile\n@@ -400,13 +400,15 @@ bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \\\n \t-fstrict-flex-arrays=% -fmin-function-alignment=% \\\n \t-fzero-init-padding-bits=% -mno-fdpic \\\n \t-fdiagnostics-show-context -fdiagnostics-show-context=% \\\n-\t--param=% --param asan-% -fno-isolate-erroneous-paths-dereference\n+\t--param=% --param asan-% -fno-isolate-erroneous-paths-dereference \\\n+\t-ffixed-r2 -mmultiple -mno-readonly-in-sdata\n \n # Derived from `scripts/Makefile.clang`.\n BINDGEN_TARGET_x86\t:= x86_64-linux-gnu\n BINDGEN_TARGET_arm64\t:= aarch64-linux-gnu\n BINDGEN_TARGET_arm\t:= arm-linux-gnueabi\n BINDGEN_TARGET_loongarch\t:= loongarch64-linux-gnusf\n+BINDGEN_TARGET_powerpc\t:= powerpc-linux-gnu\n BINDGEN_TARGET_um\t:= $(BINDGEN_TARGET_$(SUBARCH))\n BINDGEN_TARGET\t\t:= $(BINDGEN_TARGET_$(SRCARCH))\n \n","prefixes":["V12","3/4"]}