From nobody Fri Oct 31 11:32:55 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1750063859; cv=none; d=zohomail.com; s=zohoarc; b=fDur3viRVAFGq7wssKhk1HZMjJSi8/gat7BckW1JPaV8UYHEzp8W5/7yoVHICTCmSMcA6A3yoF5FLt+AibZ5aJLEbkC94zxDTu9Rv39uN3W5jB+aPwyDqwWhb3OgnkUZrbwILZbntVJEeC14ThUxzTRPPAcz/MoN0epb1OHjX3Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1750063859; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=IMg43rEyz8CpFoVtq3k2oUri4d2hHuQbI9tlZdtJd1M=; b=GLa0ofN19pUVqycCJfayjE+04DhBgEQn1aQzz6GmOVHb9qGgx5UoHwXuqRvWj6PDV2/Qq7UTmGjdXe5JnoeD4A9RwT1tZwuwAF+bpBI5QEowOLw/ZBPBDUNBuHPIUeWNbgYA6AlZhhlBVY03HQ6qkheiLt21xKeLRbAPkeiFC+k= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1750063859216270.8250282766619; Mon, 16 Jun 2025 01:50:59 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1016944.1393943 (Exim 4.92) (envelope-from ) id 1uR5YB-00048A-Oo; Mon, 16 Jun 2025 08:50:43 +0000 Received: by outflank-mailman (output) from mailman id 1016944.1393943; Mon, 16 Jun 2025 08:50:43 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1uR5YB-00047I-JT; Mon, 16 Jun 2025 08:50:43 +0000 Received: by outflank-mailman (input) for mailman id 1016944; Mon, 16 Jun 2025 08:50:42 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1uR5V4-0007hV-SQ for xen-devel@lists.xenproject.org; Mon, 16 Jun 2025 08:47:30 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 88f20ac5-4a8e-11f0-b894-0df219b8e170; Mon, 16 Jun 2025 10:47:29 +0200 (CEST) Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DD17221203; Mon, 16 Jun 2025 08:47:28 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id A87E4139E2; Mon, 16 Jun 2025 08:47:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id oGyWJyDaT2hFQAAAD6G6ig (envelope-from ); Mon, 16 Jun 2025 08:47:28 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 88f20ac5-4a8e-11f0-b894-0df219b8e170 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1750063649; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IMg43rEyz8CpFoVtq3k2oUri4d2hHuQbI9tlZdtJd1M=; b=RBycZqlgyhvjGURyBTEl+DgB6nQGhh31WKaVV+yTp1sAXttmg+yIRZ9ukSzGsZKHBoj0ij REk5qSbSMn7B/V/WkDfZJFZwpnGhvZxP0e6Vbm47m2+M3bB7WOMiJsEb42h7Vi8uUtIAfe XGe7W1XKAgxDD1/uhmOBMfx6dd+ohfU= Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.com header.s=susede1 header.b=dYaRylJK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1750063648; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IMg43rEyz8CpFoVtq3k2oUri4d2hHuQbI9tlZdtJd1M=; b=dYaRylJK0V/t4bUa7GTifIuxYGsBu9t85xuZtG1CaUoZoxuvd5an6xk4mHpO7Mnz3VLPp3 lyGpE1QHPLGkpJK7gIO0bQMrQee+GDMqR2JZL5rY7NJNs4DjFes4i3UVl51VExF0k8KaBk b9hndnRcm56g6Zm+Zo6APRP/RHPKP4k= From: Juergen Gross To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Cc: samuel.thibault@ens-lyon.org, Juergen Gross Subject: [MINI-OS PATCH v2 12/12] mini-os: kexec: do the final kexec step Date: Mon, 16 Jun 2025 10:46:19 +0200 Message-ID: <20250616084619.11112-13-jgross@suse.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250616084619.11112-1-jgross@suse.com> References: <20250616084619.11112-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; MIME_TRACE(0.00)[0:+]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim,suse.com:mid,suse.com:email,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; DKIM_TRACE(0.00)[suse.com:+] X-Spam-Level: X-Spam-Flag: NO X-Rspamd-Queue-Id: DD17221203 X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Score: -3.01 X-ZohoMail-DKIM: pass (identity @suse.com) (identity @suse.com) X-ZM-MESSAGEID: 1750063859575116600 Content-Type: text/plain; charset="utf-8" With all kexec preparations done, activate the new kernel. Signed-off-by: Juergen Gross Reviewed-by: Jason Andryuk --- kexec.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/kexec.c b/kexec.c index f42aa8ad..2607c819 100644 --- a/kexec.c +++ b/kexec.c @@ -168,6 +168,7 @@ int kexec(void *kernel, unsigned long kernel_size, cons= t char *cmdline) { int ret; unsigned long *func; + void *kexec_page; =20 ret =3D analyze_kernel(kernel, kernel_size); if ( ret ) @@ -191,6 +192,13 @@ int kexec(void *kernel, unsigned long kernel_size, con= st char *cmdline) if ( ret ) goto err; =20 + kexec_page =3D (void *)alloc_page(); + if ( !kexec_page ) + { + ret =3D ENOMEM; + goto err; + } + for ( func =3D __kexec_array_start; func < __kexec_array_end; func++ ) { ret =3D ((kexeccall_t)(*func))(false); @@ -203,10 +211,15 @@ int kexec(void *kernel, unsigned long kernel_size, co= nst char *cmdline) } } =20 - /* Error exit. */ - ret =3D ENOSYS; + /* Activate the new kernel. */ + do_kexec(kexec_page); + + /* do_kexec() shouldn't return, crash. */ + BUG(); =20 err: + if ( kexec_page ) + free_page(kexec_page); change_readonly(true); unreserve_memory_below(); kexec_move_used_pages_undo(); --=20 2.43.0