From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9642C00A5A for ; Thu, 19 Jan 2023 05:27:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229923AbjASF1G (ORCPT ); Thu, 19 Jan 2023 00:27:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229646AbjASF0r (ORCPT ); Thu, 19 Jan 2023 00:26:47 -0500 Received: from mail-qt1-x836.google.com (mail-qt1-x836.google.com [IPv6:2607:f8b0:4864:20::836]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C020CE for ; Wed, 18 Jan 2023 21:26:46 -0800 (PST) Received: by mail-qt1-x836.google.com with SMTP id g9so818100qtu.2 for ; Wed, 18 Jan 2023 21:26:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tC4jG2P7TxWk2xJp/iiDtds8NtE5bfDPvvXdGd6AAck=; b=NAGaDdwxyXQU9vq7ltkCPRl1iGhpgYu/A2RgiYg6jwn1rEsUpWIb+1C7cEqotNB2dH 3kC8jzOXysoav7zP3YE+69BlP0NgLv69Ow30Q+l7FRS9H0JFopH80KG7yEsMmkLITON7 Y+av8jnv+G3M/d4rtXltAvKRf3LFLxiuTupvkvziaZOtddRCie0OdfyAdB0NEVdqNvkc B4svO4SegF0tP6xvxalxDC36jb8wGnEZMWfdoh7p1vGi0Fz5ArhGhu3OlkMBx3DfVbPA SxClmoaOnUNIkPS225ElDLrxWGLxfvvO89R39rK3hUtMTLno7NgOTRuAK5UH726aT6zv R6nA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tC4jG2P7TxWk2xJp/iiDtds8NtE5bfDPvvXdGd6AAck=; b=jk1xOs/vbf1u6u0n6qT4zTm3CTAl2z+cbO/QsId/j2Ml4P+i+y4r6JonXVQlimPKBy nH16VXSyQN0SPrMMQtfW4o0cFhIN58359u187OdSCJ2qLs2beAkRb/9ziqzAgBTdAmYF 3KJjOzXSsIu2AWeilYbGPwN5qD9sdgYcjSRoh9iUG7meAlajaW4kNIMK7Y4X6rwQBTQu eaGAc5y/hrkDzJfFvMDOu02N5sUN3jECNHu9eeg6UCvDIYMNp/MMmUvCFYbpgN4pTpAy CdTo9hUVBWUQabhmvwnA/mzlR6ERIoGZTwAAM18TRLBZm7Hu0zjSk/aCNBGjvlu7LCoZ 9CHw== X-Gm-Message-State: AFqh2kreSJRMJ+HKpmWAuOVDa1ouuCapO2ekfuA9tF8mYmpZQggPMEvi 49m8T8kWFnHprIZQWghAIfo= X-Google-Smtp-Source: AMrXdXtbA85An2UlTdL2XzbhfLYOvcD87z0EDVwbQ4RYCtnVmmT6y5CqsNyrZiS3va0/p+EQApDNig== X-Received: by 2002:ac8:5ed2:0:b0:3b6:313a:f461 with SMTP id s18-20020ac85ed2000000b003b6313af461mr12124149qtx.65.1674106005334; Wed, 18 Jan 2023 21:26:45 -0800 (PST) Received: from jesse-desktop.jtp-bos.lab (pool-108-26-182-112.bstnma.fios.verizon.net. [108.26.182.112]) by smtp.gmail.com with ESMTPSA id v21-20020ac87295000000b003a5430ee366sm507330qto.60.2023.01.18.21.26.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Jan 2023 21:26:45 -0800 (PST) From: Jesse Taube X-Google-Original-From: Jesse Taube To: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Jesse Taube , Yimin Gu , Waldemar Brodkorb , Albert Ou , Palmer Dabbelt , Paul Walmsley Subject: [PATCH v1 1/2] riscv: Kconfig: Allow RV32 to build with no MMU Date: Thu, 19 Jan 2023 00:26:41 -0500 Message-Id: <20230119052642.1112171-2-Mr.Bossman075@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> References: <20230119052642.1112171-1-Mr.Bossman075@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yimin Gu Some RISC-V 32bit ores do not have an MMU, and the kernel should be able to build for them. This patch enables the RV32 to be built with no MMU support. Signed-off-by: Yimin Gu CC: Jesse Taube Tested-By: Waldemar Brodkorb Signed-off-by: Jesse Taube --- arch/riscv/Kconfig | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 59d18881f35b..49759dbe6a8f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -163,8 +163,8 @@ config MMU config PAGE_OFFSET hex - default 0xC0000000 if 32BIT - default 0x80000000 if 64BIT && !MMU + default 0xC0000000 if 32BIT && MMU + default 0x80000000 if !MMU default 0xff60000000000000 if 64BIT config KASAN_SHADOW_OFFSET @@ -262,7 +262,6 @@ config ARCH_RV32I select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 - select MMU config ARCH_RV64I bool "RV64I" -- 2.39.0