{"id":2228076,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2228076/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-um/patch/20260425034125.53866-1-david@davidgow.net/","project":{"id":60,"url":"http://patchwork.ozlabs.org/api/1.1/projects/60/?format=json","name":"User-mode Linux Development","link_name":"linux-um","list_id":"linux-um.lists.infradead.org","list_email":"linux-um@lists.infradead.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260425034125.53866-1-david@davidgow.net>","date":"2026-04-25T03:41:23","name":"rust: arch:um: Fix building 32-bit UML with GCC","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"0fcad05585c026d81f5c8bf161f8ab21591a3312","submitter":{"id":85079,"url":"http://patchwork.ozlabs.org/api/1.1/people/85079/?format=json","name":"David Gow","email":"david@davidgow.net"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-um/patch/20260425034125.53866-1-david@davidgow.net/mbox/","series":[{"id":501419,"url":"http://patchwork.ozlabs.org/api/1.1/series/501419/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-um/list/?series=501419","date":"2026-04-25T03:41:23","name":"rust: arch:um: Fix building 32-bit UML with GCC","version":1,"mbox":"http://patchwork.ozlabs.org/series/501419/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228076/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228076/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=NTvUapR3;\n\tdkim=pass (4096-bit key;\n unprotected) header.d=davidgow.net header.i=@davidgow.net header.a=rsa-sha256\n header.s=201606 header.b=aM7Xm3/3;\n\tdkim=pass (4096-bit key) header.d=davidgow.net header.i=@davidgow.net\n header.a=rsa-sha256 header.s=201606 header.b=IYc/LXRU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: 32-bit UML builds can be configured either by setting\n CONFIG_64BIT=n\n or with SUBARCH=i386. Both work with Rust-for-Linux when clang is the\n compiler,\n but when SUBARCH=i386, we don't set a bindgen targe [...]\n Content analysis details: (-2.1 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n -0.0 SPF_PASS SPF: sender matches SPF record\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]","X-BeenThere":"linux-um@lists.infradead.org","X-Mailman-Version":"2.1.34","Precedence":"list","List-Id":"","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Sender":"\"linux-um\" ","Errors-To":"linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org"},"content":"32-bit UML builds can be configured either by setting CONFIG_64BIT=n or\nwith SUBARCH=i386. Both work with Rust-for-Linux when clang is the\ncompiler, but when SUBARCH=i386, we don't set a bindgen target correctly if\ngcc is the compiler.\n\nAdd the appropriate bindgen target configuration for i386, as is done in\nMakefile.clang.\n\nFixes: ab0f4cedc355 (\"arch: um: rust: Add i386 support for Rust\")\nSigned-off-by: David Gow \n---\n\nThis could go in via either the rust or um trees. I suspect rust is less\nlikely to trigger conflicts, though.\n\nCheers,\n-- David\n\n---\n rust/Makefile | 2 ++\n 1 file changed, 2 insertions(+)","diff":"diff --git a/rust/Makefile b/rust/Makefile\nindex b361bfedfdf0..b9e9f512cec3 100644\n--- a/rust/Makefile\n+++ b/rust/Makefile\n@@ -403,6 +403,8 @@ 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+# This is only for i386 UM builds, which need the 32-bit target not -m32\n+BINDGEN_TARGET_i386\t:= i386-linux-gnu\n BINDGEN_TARGET_um\t:= $(BINDGEN_TARGET_$(SUBARCH))\n BINDGEN_TARGET\t\t:= $(BINDGEN_TARGET_$(SRCARCH))\n \n","prefixes":[]}