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 DC0F0606A33B for ; Fri, 6 Nov 2026 07:15:12 +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=Ux61SriL; 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=kyWtLpC+ 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=jJG+oWzeBiYTOj3RU2JHcsvV/qqXp37vXx+hYTPpTbg=; b=Ux61SriLhdHHD0 hz75McXK6VyLysWc9IZ65tYtG7es/gvbS0yCz6Ak6PYEFaUNKso+chjgBDvu4LEHl29OHp+KSTTbw vCp8lH8+wMUK/fEBrfHixSLyxgkY3fJj34tI77aHWi4EdZQrPPB8l0x08N7MYQnQGr+PBCTDvX7GL E+5QBIfwswK5pgb6sssvuR5iD5+edIMBodXmrDo8kCF8Bz5TyXq5LfWuLukWquBdkLzTHOHySFNkf /XNS7de0zdiUKiwUTA1t9wg28k+XLiLQMcknp2Ax7CGKm1dmx0p83CJ4r6sbOqkxBE/R1oBj8lRMc CkEHFDVPXLLkiTB+8rlg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPEAK-0000000BPsa-2B8o; Fri, 06 Nov 2026 07:15:12 +0000 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPEAH-0000000BPpR-18A1; Fri, 06 Nov 2026 07:15:10 +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=jJG+oWzeBiYTOj3RU2JHcsvV/qqXp37vXx+hYTPpTbg=; b=kyWtLpC++GGMYwZOyrC80s33E13MFo8+fwxj+sja6iO3A7zAzooPvb9xGOK9s7hrVyd9jHlwD7T09Bnb+LW9g97wrbFK0iYL7Tx3jyQEmZOs+i0/B7wt3zQIaH4QxZi9mBDkFuggJhZhRRjF35Bit6gGwD3NFymttSsNHYOA12s= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045098064;MF=cp0613@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0XEAtjN9_1793949304; Received: from DESKTOP-S9E58SO.localdomain(mailfrom:cp0613@linux.alibaba.com fp:SMTPD_---0XEAtjN9_1793949304 cluster:ay36) by smtp.aliyun-inc.com; Fri, 06 Nov 2026 15:15:05 +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 2/4] riscv: Add support for kexec handover (KHO) Date: Fri, 6 Nov 2026 15:14:57 +0800 Message-ID: <20261106071459.2003-3-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_231509_492965_1E66F00C X-CRM114-Status: UNSURE ( 7.81 ) 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 The generic handover paths are already in place on RISC-V: the outgoing kernel publishes the handover FDT and the bootmem list in /chosen of the DTB built by of_kexec_alloc_and_setup_fdt(), and the incoming kernel picks both up while scanning that node. Only the architecture symbol is missing. Set it to 64BIT && MMU: ARCH_SUPPORTS_KEXEC_FILE is already 64BIT only, and KEXEC_HANDOVER selects CMA, which depends on MMU. Signed-off-by: Chen Pei --- arch/riscv/Kconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bde1f1885038..bffef6b903e1 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -1125,6 +1125,9 @@ config ARCH_SELECTS_KEXEC_FILE config ARCH_SUPPORTS_KEXEC_PURGATORY def_bool ARCH_SUPPORTS_KEXEC_FILE +config ARCH_SUPPORTS_KEXEC_HANDOVER + def_bool 64BIT && MMU + config ARCH_SUPPORTS_CRASH_DUMP def_bool y -- 2.50.1