From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 193523537F9 for ; Tue, 7 Jul 2026 13:45:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783431954; cv=none; b=sXpijP2Oc5PI9WZ7JV0pmj2QzL/+zXdHcVS1K1+SGb/nfMkcd9X4a5pIIwcN43crWAU3od2sGV0UmuYaiyKdglVkqA3wS3XzbBSLpFMBLAf1RSH6mxGqCN+UNWJu1HTiZ3qwtckHNJQugA9Lnz98claKo2LKZCoij+FkFuY13HE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783431954; c=relaxed/simple; bh=Y17fnj1uZPQvVE2gOwN2QeqJ2UMyTPbkJL7tQVxtT3A=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VYBeS3ofogIQRAr/LUSqwvVeECjhJ9jzhwVGNVbE0xmAdH1/Y/+f8iNyPruoaXC9USGKHnLRHzINEfQnvYmWEGV5uWC0p59QctaoHD0TKWK+N+uEiu4huBEZn0QAr08MB9lDv3XzblzklYN2qCQSfI0uQxfoOZmqQ8r/3w53jBU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Q95lGb91; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Q95lGb91" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D65571F000E9; Tue, 7 Jul 2026 13:45:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783431952; bh=rM0EBVxGJ8M9ullpFRAPvwAgrK02mbep7O7PE152JPo=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Q95lGb9166BzEJyLfy0LLHvUuYPGWc+Z6W/MAXsCT3gAU7fCm7+Kb8/wMtypdT629 lriPCYYOuOwA5gaQEXVTd1fDGd7EB3wAiw3y/p8FgLOYu20NvLzsJbqVKGcl2vRHUz fZo+1MVjpvlRW1xDw+wXrDVPDiG+twK7AYRFu9oc/8PFa7JYE67cnjqgGp6l5l9gCJ eGmwZyX4IiT4e5C5dzle6Et6a+4i8KygE8tNTxvNfJp9fttrYOL4yLqIPr+eYin5q4 Q3kX4G/PwlpY5Kxwb3SRo9ptdOj/uPcMPjPYQRfuM6tMBBM1Bb+o3PS94scXYLD2Ww ERhEGpmbEJyaA== Message-ID: Date: Tue, 7 Jul 2026 15:45:49 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/2] mm/mm_init: don't overlap NORMAL and MOVABLE zones with kernelcore=mirror To: Mike Rapoport , linux-mm@kvack.org Cc: Andrew Morton , Taku Izumi , Wei Yang , Yuan Liu , linux-kernel@vger.kernel.org References: <20260630072212.624305-1-rppt@kernel.org> <20260630072212.624305-2-rppt@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/30/26 09:22, Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > When kernelcore or movablecore kernel parameters define size of the > NORMAL and MOVABLE zones as percents of the total memory or by absolute > value, ZONE_NORMAL is clamped at the beginning of ZONE_MOVABLE. > > However, when kernelcore=mirror the ZONE_NORMAL span is not changed but > rather pages from ZONE_MOVABLE counted as absent in ZONE_NORMAL. > > Make the behaviour of kernelcore= parameter uniform and treat mirror > just as another way to size the zones. > > Co-developed-by: Wei Yang > Signed-off-by: Wei Yang > Signed-off-by: Mike Rapoport (Microsoft) > --- Reviewed-by: David Hildenbrand (Arm) -- Cheers, David