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 A68D13101C0; Fri, 18 Sep 2026 07:00:55 +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=1789714857; cv=none; b=d4PsbhOnR0I0hJ09l+cLM4tF6shnCeZAlh+iMM3ymnc8akrVWHjTDjHumHycnn31Iut25LhBjat7u/bMcRmNxzSpPo9PqT4+82YMGu5JC6A3eK4xTPZj+uKXzsCZIDTKfOZzrJBjVQGvYcxlQEy5YSvwzCTE1/quU9tLcTNQv7A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789714857; c=relaxed/simple; bh=CFwJEKxFbVk2oXpA6XmCb4eB1YfIUvoG93k8Zl1da0Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XDWp9w1t6TvjexH2SwRXs55mPJ/d+btEf8hPhzuh0UX7aEZTShgsyuYYltfyJT2Xq38Nfjt3AvheNNigUvX8nIQr0cH1TCgvjj/kDw+s526tdcx4Ut07AeEoRuRtWz8/9NfTopBT88O8MEuj2DSBAaQhesE7Qp2AeXb18cqoaco= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ddEaqhLh; 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="ddEaqhLh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 881A21F000FF; Fri, 18 Sep 2026 07:00:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789714854; bh=xoKeOk0v0E+lrs5eZG2JMMltTlaNFbdGi9KSvcSzDqE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=ddEaqhLhDpDSoBo7I/HnGD6o5TYNSCCk1vbkXYkLf2/bYgvnrydMc+ZR6x61gKESK UGKv/IbSNvNPBR1vOqX+r9JgWXrjvDTCFcOrJvX6CibAfDXYyk6MiteN00P/s7B3u+ 4zD3d4ENXshV5oFAYsQ0wtE3JwGN5yRx90fDESoEzj0+9cqfqRYDfdP6RS+BNKREuT If8/BphX6k0RBR5SE1XpB9ELckQp2CWM3mcQAwcOTD/Cv/a+7A17/8AghwaLxNVQ0B eUvYhxRKtRV4PGfHxJCp8USPFFWEE1cSPHIbDRVKPWKtzqf+hzV40iuv2VjMTh+sI1 CPFp1z3iL/qqw== Date: Fri, 18 Sep 2026 10:00:44 +0300 From: Mike Rapoport To: Wandun Chen Cc: catalin.marinas@arm.com, will@kernel.org, chenhuacai@kernel.org, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, robh@kernel.org, saravanak@kernel.org, akpm@linux-foundation.org, baoquan.he@linux.dev, pasha.tatashin@soleen.com, pratyush@kernel.org, m.szyprowski@samsung.com, mark.rutland@arm.com, kernel@xen0n.name, alex@ghiti.fr, hpa@zytor.com, ruirui.yang@linux.dev, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, kexec@lists.infradead.org, linux-mm@kvack.org, iommu@lists.linux.dev Subject: Re: [PATCH v6 06/10] memblock: introduce MEMBLOCK_NODUMP flag Message-ID: References: <20260902073116.802752-1-chenwandun1@gmail.com> <20260902073116.802752-7-chenwandun1@gmail.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=us-ascii Content-Disposition: inline In-Reply-To: <20260902073116.802752-7-chenwandun1@gmail.com> On Wed, Sep 02, 2026 at 03:31:12PM +0800, Wandun Chen wrote: > From: Wandun Chen > > Add MEMBLOCK_NODUMP to mark regions that should be excluded from > kdump vmcores. > > The flag is meant for reserved memory that carries no data useful for > crash analysis. Reusable reserved regions such as CMA may hold useful > data, so these regions must not be marked MEMBLOCK_NODUMP. Subsequent > patches wire this up for /reserved-memory and /memreserve/ entries. > > Suggested-by: Rob Herring > Signed-off-by: Wandun Chen > Tested-by: Meijing Zhao Reviewed-by: Mike Rapoport (Microsoft) > --- > include/linux/memblock.h | 9 +++++++++ > mm/memblock.c | 16 ++++++++++++++++ > 2 files changed, 25 insertions(+) -- Sincerely yours, Mike.