From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 034301E4EF1 for ; Wed, 7 Aug 2024 10:41:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723027294; cv=none; b=LKQ8v1Uc+Afw415ezHFrW2FwvrY6bhvTfh8w50s73O8WRugAjj865VukHDdrsPIdW0Q+EmbRCf06VsmP+C94U7fKHZLyb3U7h9n/008RI7wcZEDMMQMkJs3fIf/5Vu0GtdOPaAJlVW8cp/TB7JqJLGdUSVra+j4ytFFMiV6JRho= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723027294; c=relaxed/simple; bh=lR2WsDlOYl/ZUfQPjJQt0WsulZRzgAzEfNlMyfU4TCE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lSXXtTcyTK2TIivVMBBgHl5GGz3w2+NLM+zSQELS0o8XzotdPHKf21asIJxJcHvPFBzbra3y+oi28JnfnZuXq80awxm6jMptcR4DHzuU4yaAg8GS6wd7XJ0suj6B9pwoaQ98zos3MjcVMG69aG9RguQsN/epKiRGqV31baeyN/8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=qnE8fYFP; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=qnE8fYFP; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="qnE8fYFP"; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="qnE8fYFP" Received: from imap1.dmz-prg2.suse.org (unknown [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 4718221D09; Wed, 7 Aug 2024 10:41:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1723027291; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dWJJMR8rBuh/QPRtNN+RcR8hDqRUcjKWCA7J80NLso8=; b=qnE8fYFP4gwW+nXwpdR80jZOfndfb8Y101T9TucjArPeBoAuu5NCh26FxkpLUfqHm9d337 JJGGWMlPMDTnN/dryUuQj5wuXwoQlK1gJI5n+rZauRhzL4t5mdByRms8c8ghks23PYC8jV a+m5cWwebAIabk/tl0zpo/Yk4UK4HLQ= Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1723027291; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dWJJMR8rBuh/QPRtNN+RcR8hDqRUcjKWCA7J80NLso8=; b=qnE8fYFP4gwW+nXwpdR80jZOfndfb8Y101T9TucjArPeBoAuu5NCh26FxkpLUfqHm9d337 JJGGWMlPMDTnN/dryUuQj5wuXwoQlK1gJI5n+rZauRhzL4t5mdByRms8c8ghks23PYC8jV a+m5cWwebAIabk/tl0zpo/Yk4UK4HLQ= 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 DCB2113297; Wed, 7 Aug 2024 10:41:30 +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 su46NFpPs2YkIgAAD6G6ig (envelope-from ); Wed, 07 Aug 2024 10:41:30 +0000 From: Juergen Gross To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Juergen Gross , Boris Ostrovsky , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , xen-devel@lists.xenproject.org, =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?= Subject: [PATCH 3/5] xen: move checks for e820 conflicts further up Date: Wed, 7 Aug 2024 12:41:08 +0200 Message-ID: <20240807104110.18117-4-jgross@suse.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240807104110.18117-1-jgross@suse.com> References: <20240807104110.18117-1-jgross@suse.com> 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: 8bit X-Spam-Level: X-Spamd-Result: default: False [-4.30 / 50.00]; REPLY(-4.00)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCPT_COUNT_SEVEN(0.00)[11]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,invisiblethingslab.com:email,suse.com:email] X-Spam-Flag: NO X-Spam-Score: -4.30 Move the checks for e820 memory map conflicts using the xen_chk_is_e820_usable() helper further up in order to prepare resolving some of the possible conflicts by doing some e820 map modifications, which must happen before evaluating the RAM layout. Signed-off-by: Juergen Gross Tested-by: Marek Marczykowski-Górecki --- arch/x86/xen/setup.c | 44 ++++++++++++++++++++++---------------------- 1 file changed, 22 insertions(+), 22 deletions(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 96765180514b..dba68951ed6b 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -764,6 +764,28 @@ char * __init xen_memory_setup(void) /* Make sure the Xen-supplied memory map is well-ordered. */ e820__update_table(&xen_e820_table); + /* + * Check whether the kernel itself conflicts with the target E820 map. + * Failing now is better than running into weird problems later due + * to relocating (and even reusing) pages with kernel text or data. + */ + xen_chk_is_e820_usable(__pa_symbol(_text), + __pa_symbol(_end) - __pa_symbol(_text), + "kernel"); + + /* + * Check for a conflict of the xen_start_info memory with the target + * E820 map. + */ + xen_chk_is_e820_usable(__pa(xen_start_info), sizeof(*xen_start_info), + "xen_start_info"); + + /* + * Check for a conflict of the hypervisor supplied page tables with + * the target E820 map. + */ + xen_pt_check_e820(); + max_pages = xen_get_max_pages(); /* How many extra pages do we need due to remapping? */ @@ -836,28 +858,6 @@ char * __init xen_memory_setup(void) e820__update_table(e820_table); - /* - * Check whether the kernel itself conflicts with the target E820 map. - * Failing now is better than running into weird problems later due - * to relocating (and even reusing) pages with kernel text or data. - */ - xen_chk_is_e820_usable(__pa_symbol(_text), - __pa_symbol(_end) - __pa_symbol(_text), - "kernel"); - - /* - * Check for a conflict of the xen_start_info memory with the target - * E820 map. - */ - xen_chk_is_e820_usable(__pa(xen_start_info), sizeof(*xen_start_info), - "xen_start_info"); - - /* - * Check for a conflict of the hypervisor supplied page tables with - * the target E820 map. - */ - xen_pt_check_e820(); - xen_reserve_xen_mfnlist(); /* Check for a conflict of the initrd with the target E820 map. */ -- 2.43.0