From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53DD6606A33F for ; Fri, 6 Nov 2026 07:15:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=DInl8Yg7; dkim=pass (1024-bit key, unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.a=rsa-sha256 header.s=default header.b=Hl3o2weq DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; bh=Q+m8DC4cfdQZ3xwF8aoJbUjRqYnCvVbB75BJhmdshTY=; b=DInl8Yg7hYqvd+ /jjYJIXd9cNN5AGH7twNUBGYohKT8oaJ3aEycLcMyjtkAFOC4LA59PCuLAcmLdSISt8INgs4694MS 8gMzJ+0mx7juHo4x7Gcb4X9rWAK6b9EoIeP8Ve/dM+QxyTlCClHXWL2By17SbFCQBpfoNkJXymhiN 0ugVNqqn3BGBDIfcRPnac4EQlOpVNEzvJ5V3nzfcSZRg7AMQ5EK94og/HmN59O05us9iadyvHSG9p 38XM8kNZm0vQVGSdHdRsW9xD1JngTZJR8LSxIFF8p3pWhTDo5yYyFeVxU4qgSWtH2uEdcm8D45keW MOHvGDYZWUTbDmIvPIUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPEAI-0000000BPqj-0ZxH; Fri, 06 Nov 2026 07:15:10 +0000 Received: from out30-112.freemail.mail.aliyun.com ([115.124.30.112]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPEAF-0000000BPpQ-1owS; Fri, 06 Nov 2026 07:15:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1793949305; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=Q+m8DC4cfdQZ3xwF8aoJbUjRqYnCvVbB75BJhmdshTY=; b=Hl3o2weqnkZwsYIusJDJryh5AJmTnOZWZcfU4b19UghowGy3k+O08szVVPnN6JFBN58y+ixQIXkz+lf0/LsTxTW2BXFlSTZTiXfRwSGzcQfQ0KcgFtgOuCXTTPvv1GWzUEwxXs7h+2stdyf4NGWh9qOc9IBnGwTbc7yfs2Im05A= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037026112;MF=cp0613@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0XEAtjMh_1793949304; Received: from DESKTOP-S9E58SO.localdomain(mailfrom:cp0613@linux.alibaba.com fp:SMTPD_---0XEAtjMh_1793949304 cluster:ay36) by smtp.aliyun-inc.com; Fri, 06 Nov 2026 15:15:04 +0800 From: Chen Pei To: pjw@kernel.org, palmer@dabbelt.com, alex@ghiti.fr, rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org, graf@amazon.com, shuah@kernel.org Cc: guoren@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, kexec@lists.infradead.org Subject: [PATCH v3 1/4] riscv: Call early_ioremap_setup() before parsing the DTB Date: Fri, 6 Nov 2026 15:14:56 +0800 Message-ID: <20261106071459.2003-2-cp0613@linux.alibaba.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261106071459.2003-1-cp0613@linux.alibaba.com> References: <20261106071459.2003-1-cp0613@linux.alibaba.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261105_231507_627626_BDA01A65 X-CRM114-Status: UNSURE ( 8.89 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -17.6 (-----------------) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" X-Spam-Status: No, score=-26.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 parse_dtb() can reach early_memremap(), whose return value is composed from the slot table that early_ioremap_setup() fills in - and on RISC-V that setup ran after the scan, so the mapping came back NULL. The DT based kexec handover parsing is the first caller to hit this: kho_populate() cannot map the handover FDT and the handover is dropped. Run early_ioremap_setup() before parse_dtb(), as arm64 and x86 already do. Signed-off-by: Chen Pei --- arch/riscv/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index d79f99b86033..45e2ef9d32fa 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -308,12 +308,12 @@ extern void __init init_rt_signal_env(void); void __init setup_arch(char **cmdline_p) { + early_ioremap_setup(); parse_dtb(); setup_initial_init_mm(_stext, _etext, _edata, _end); *cmdline_p = boot_command_line; - early_ioremap_setup(); sbi_init(); jump_label_init(); parse_early_param(); -- 2.50.1