From nobody Sun Feb 8 17:03:33 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E02B13594F for ; Fri, 16 Jan 2026 06:19:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768544370; cv=none; b=KvZWwAQjk5VuEnLs2+7PBxpfB6UZQbgmG3kd/Ej7Jk8ag/w//OIMdprOj+lJoio1e2tth3eevBdzD4cl8Hh5gT43/xLUHTcQ9tuLRJETde1o7kkkJJ8rjGOB13leGXbTyH74815wP356DRa2JmPFGE1rxfjV8f1bu+C/fmfVN14= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768544370; c=relaxed/simple; bh=YsZODejPaMJUcZSBq/h58xHb2HRtC/WNXB0PXS59kuU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=ZcEbxAjF5+vU/TeyNpHsXfObEOcC5aNF7+b7mNAJqN16pwar/6yJSJ/aIpNCdvWjdF9j1kI39T5glHOnEK8Wf7OLdhgS93dbG1w61Y2Y4g0J9DMZjVpGmhcIZJjDWJ6HAz12vo30dZH5um8BctpqdoGZ31ir410g0s207WK+jns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=B4g63FGD; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=VRmUi2Gl; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="B4g63FGD"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="VRmUi2Gl" From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1768544367; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=flwjYtqlrMALIXZXtKpSQ7iMAml1HwYFImYMXwos3ec=; b=B4g63FGDMoWQRlfIoJKDPDTjb38sC0GwbLcsjCZz8Hvbktc16Pol1CSwckNbX5ryQgkBXG UT1n4tPSX/thqMsFEfXNnd1rJKRPYVGA+HNjq2ujooTnY54kThxIdI2yuo6zHZHOWhzqN2 wgVqxLN5OWR30vYd7hmwTIAo3igT3i3UvJNg5O/gTVgJa1UoWqgRPkugd4kyxEpu3kVhsl g8fv5P/al4bTP7QNGO6S6Z7N2bgpTsukX/G2ELn3144vwEyJbw6MgSqi5HBj8YXqpafbXn pFkvsP/qh4h7aJowpmvg+4y/MxxM+qcEjzNXji3pnC3QRgyyUE0zDQTv0/PyOQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1768544367; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=flwjYtqlrMALIXZXtKpSQ7iMAml1HwYFImYMXwos3ec=; b=VRmUi2Glr8EqDBOnL9vubwKSi5M9T+6FBpGt2aFvTL99g+2FOeBLtAQHUWtgNyXT3SyTiu s4YEgfYCBdmE1uBQ== Date: Fri, 16 Jan 2026 07:19:24 +0100 Subject: [PATCH v2] riscv: Implement ARCH_HAS_CC_CAN_LINK 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 Message-Id: <20260116-cc-can-link-riscv-v2-1-eaf362d74c90@linutronix.de> X-B4-Tracking: v=1; b=H4sIAGvYaWkC/32NQQ6CMBBFr0Jm7Zh2ihhdcQ/DgkwHmWiKabHBE O5u5QAu3//576+QJKokuFYrRMmadAoF6FABj324C6ovDGToZIkImZH7gE8ND4yaOKNn40zt6cx DDWX3ijLosjtvXeFR0zzFz36R7S/9Z8sWLTbOibtI3TfGt6V8z3EKuhy9QLdt2xfKnz4ctgAAA A== X-Change-ID: 20251222-cc-can-link-riscv-dc0304d27cf4 To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Developer-Signature: v=1; a=ed25519-sha256; t=1768544366; l=1847; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=YsZODejPaMJUcZSBq/h58xHb2HRtC/WNXB0PXS59kuU=; b=H9mOViyKCBg8gXI4naBTJ26ZDk6c98aTE/8zMcuL/c2UMleqawTjUyTOLGOu+tPwgKbDv5d9x ZQB7zioBRBlCMAxr/nyJU/qllTmg7x0Tijq5ECCv1JDJEn447xStT37 X-Developer-Key: i=thomas.weissschuh@linutronix.de; a=ed25519; pk=pfvxvpFUDJV2h2nY0FidLUml22uGLSjByFbM6aqQQws= The generic CC_CAN_LINK detection relies on -m32/-m64 compiler flags. These are not supported by riscv compilers. Use architecture-specific logic using -mabi instead. Prefer the 'd' ABI variant when possible as todays toolchains are most likely to provide a libc for that one. Signed-off-by: Thomas Wei=C3=9Fschuh --- Changes in v2: - Also handle !FPU case. - Extend commit message. - Link to v1: https://lore.kernel.org/r/20251222-cc-can-link-riscv-v1-1-633= e39e4a60d@linutronix.de --- arch/riscv/Kconfig | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 6b39f37f769a..1c636117b7e4 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -25,6 +25,7 @@ config RISCV select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_HAS_BINFMT_FLAT + select ARCH_HAS_CC_CAN_LINK select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEBUG_VM_PGTABLE @@ -1351,6 +1352,20 @@ config PORTABLE config ARCH_PROC_KCORE_TEXT def_bool y =20 +config ARCH_CC_CAN_LINK + bool + default $(cc_can_link_user,-mabi=3Dlp64d) if 64BIT && FPU + default $(cc_can_link_user,-mabi=3Dlp64) if 64BIT + default $(cc_can_link_user,-mabi=3Dilp32d) if FPU + default $(cc_can_link_user,-mabi=3Dilp32) + +config ARCH_USERFLAGS + string + default "-mabi=3Dlp64d" if 64BIT && FPU + default "-mabi=3Dlp64" if 64BIT + default "-mabi=3Dilp32d" if FPU + default "-mabi=3Dilp32" + menu "Power management options" =20 source "kernel/power/Kconfig" --- base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8 change-id: 20251222-cc-can-link-riscv-dc0304d27cf4 Best regards, --=20 Thomas Wei=C3=9Fschuh