From nobody Thu Apr 9 12:08:46 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 9DF8130F95C for ; Fri, 27 Feb 2026 06:49:46 +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=1772174987; cv=none; b=Jw2xyneDaBMhdi8PxL1v3DMQ564YVA093zWdCWS53iKQjkW8c97kVHPN/cxAi6CfI7RPGuYi+xRLlrdGbEUxdbssOyVyMz/xDg3tGcctgpvJRMbpPzBvVFFtrWhrd2N1Hsp6QTw+CTddrXhI0/giSLxzzLFbZyucUTT0Df++hes= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772174987; c=relaxed/simple; bh=Tg2RFHj9eoQO5TzJVPaXMOYmW8CobLV5TZqXWixFR2U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=gITN63sqsckk0EeFQ9ZWKRnLJ5sKNSYcB8EXlUK0KhQ5lRWjzgIhY/wXwp8kUQUgEsEmF7KB6MAixxN6uiJxDqEJHmAZu6P+Jun6B1P2dFLNBpuqX5I4qyKghLQayWfyPbV3ZC71J0Cv5hDr59z68vClftRIK9AY6c84+70DGRI= 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=0yR4XJQo; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=Lps2T4aB; 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="0yR4XJQo"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Lps2T4aB" From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1772174985; 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=XditmXZ2NnCC8sU2rfkKSVe/maZouU+2bHr9lNmNQ/E=; b=0yR4XJQoQEwtE9eeG2+DzKfZNCfLPGiexMzmnNnuOMO2H/sVuH/0qjbvDyfDW1iTGhnIju h+Zk+XCOqZA/TgczL4FYXJ6OUJRfBkjrwcPT1ELG69/LJ6I5DiJYzjqk3NVZ4Cp2dHoOaQ fBZ9SbvogxU3q8cCcOWiWUKpnzuYjn345HotIh4LIJvEK4XUpzaofV2f1Gp2CwFyKI6l19 +ozh5D6kmKW0R8V1fPGWKCWSoN8uMqt1OaWOReD80OYV7dbp/vAznmVY24vyVWQTuFmNYy B/qEbCj4mezXvrdHTpDoVtQJ5tDkHX/bDsMiwFP4wLGfVA3whMJZMsb6WJF+Yg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1772174985; 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=XditmXZ2NnCC8sU2rfkKSVe/maZouU+2bHr9lNmNQ/E=; b=Lps2T4aBBwULt+lvi83w8JJ+f61FJM+cNQJvbP6Km0gGWdnKcpg9BoBSM1u+es4LndIr2I 2fU+yMo5TuZwPpBg== Date: Fri, 27 Feb 2026 07:49:44 +0100 Subject: [PATCH v3] 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: <20260227-cc-can-link-riscv-v3-1-b0baf0fff571@linutronix.de> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/33NwQrCMAyA4VcZPRtp09oxT76HeBht5oLSSTvLZ Ozd7QZeRDz+Cfkyi0SRKYljNYtImRMPoYTeVcL1bbgSsC8tUOJBISI4B64NcOdwg8jJZfBOamk 81q4zotw9InU8beb5UrrnNA7xtb3Iap3+07ICBVZr0g2Z1kp/KsvnGIfA096TWMWMH8VKpewvB YtCbact+tq4Rn4ry7K8AVoxZrj8AAAA 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=1772174984; l=1987; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=Tg2RFHj9eoQO5TzJVPaXMOYmW8CobLV5TZqXWixFR2U=; b=08UtNZMD4sKmYzGSO8dQo8sbuIv+eB2HZ4lpqIXa95hEDTLVTqQjy5RTYvsXOBJ001qQZerbk 2IQfl+2fxBjCCJolabsH5Cydz02//tsDKF8oTjctJPMCQj1mTXsvHY3 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 v3: - Rebase on v7.0-rc1 - Link to v2: https://lore.kernel.org/r/20260116-cc-can-link-riscv-v2-1-eaf= 362d74c90@linutronix.de 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 90c531e6abf5..a9d111da37c2 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 @@ -1374,6 +1375,20 @@ 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: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f change-id: 20251222-cc-can-link-riscv-dc0304d27cf4 Best regards, --=20 Thomas Wei=C3=9Fschuh