From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FB60343D63; Thu, 7 May 2026 08:30:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778142656; cv=none; b=sL16+QRq3XcP3R5LV+QBl6C/ueKM9l/voQQdcbJsBkd6W7bOsrECa0MjIHHHMEMJn9vftSWB5+LF6RS9mIxRTC68K2Hm/Mm/9EXd71Xx9SrEYhkGhZlXDIYVvHZHn5F7DnnSjyKvysTBBzHyeD5/YxeHxEyFTTuFEnjGnvmuM84= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778142656; c=relaxed/simple; bh=geHavgZaZIVCiukXpx1HhV2cBMxsNeuDV0MhY4hXAok=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QkACzJ4Jmud+P9/u4H0UiNIqUiDu8osaqg+CojVYN3xv1zXDsR77fH1gOhj3zKz5cnrmY68TaHEVSoRSonX6OD9ZHHpHltqjotJ1M5yJjsg66K9bWnQwBBDgWpq0bfRN+F4VLIySUCodcAll5R/kWjbQd9GwVn8IegxiQ/bcjKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mV3UTGk+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mV3UTGk+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71A86C2BCB2; Thu, 7 May 2026 08:30:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778142655; bh=geHavgZaZIVCiukXpx1HhV2cBMxsNeuDV0MhY4hXAok=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mV3UTGk+MA0RxR/oH1m9bqdw82ETSU6Csmba+7UlV7HnQbDouCGG0lsP0O9hrxDC4 +kZMq6EAXIE0wF60O+9oTW5jtS1Q9sOXTDvL4GZPpJ870Or+Z68DSQKjIP32Uh2qYJ 5uX3vzsNVhrHcdR5Y1d+Ah7NBvXnwW8zPATQFH/9v7tNwrP7tMbFUiTky9sxsz+u6J JCxdr9ZrtfMP29JmC2+Ujkfxw48wolgQNtl9eEn9Y0oNMN+jbFLS9p04+Yb25Au5Cb rCMDJmaiAGP3fIao8i0g1x8Hlhbf+Zxni0uLiACCRCDwMWYl/RFDi0waJYCkFVDsek wXYs+BL0UgMbw== Date: Thu, 7 May 2026 10:30:50 +0200 From: Ingo Molnar To: Thorsten Leemhuis Cc: An , Thomas Gleixner , Borislav Petkov , Dave Hansen , "linux-kernel@vger.kernel.org" , Linux kernel regressions list , the arch/x86 maintainers , David Gow Subject: Re: [Regression in 7.0] OLPC-XO-1.5 will not boot after commit 157266edcc Message-ID: References: <7a0c8eec-2e97-4eaf-a8aa-f7e97da93908@mailbox.org> <00b05188-c352-42b9-888a-01e9bf00fb34@leemhuis.info> 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=us-ascii Content-Disposition: inline In-Reply-To: <00b05188-c352-42b9-888a-01e9bf00fb34@leemhuis.info> * Thorsten Leemhuis wrote: > Lo! Looks like nothing happened since the report (please correct me if > I'm wrong, it's easy to miss something). Adding a few more people and > lists to the recipients of this reply, maybe that will things rolling. > > FWIW, the culprit seems to be 157266edcc5671 ("x86/boot/e820: Simplify > append_e820_table() and remove restriction on single-entry tables") > [v7.0-rc1] from Ingo. Yeah, I missed the empty table case. :-/ > Therefore adding David Gow, who submitted a fix for the culprit -- but > that didn't make it anywhere afaics, unless I'm missing something. For > details see: > https://lore.kernel.org/all/20260416065746.1896647-1-david@davidgow.net/ This fix is now queued up and should go upstream later this week: 5772f6535227 ("x86/boot/e820: Re-enable BIOS fallback if e820 table is empty") Thanks, Ingo