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 935BD3CB8EF; Tue, 30 Jun 2026 11:06:27 +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=1782817589; cv=none; b=ioxAOg/TsHAoNJxdYK13uofHHq4lImctPuC+ZKH5G1GvEWxw2KMOhWhfVde3KyQdP5sKny1Qyhj1DSg9DbOBNHj2VvBySK9yebach/gKx/r9LKAuSi/gVXoG0z5V7zP49wWVuRuSPnybHANZ1LkQOLBYfFLM3ZGAU3Ow5B8L3ok= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782817589; c=relaxed/simple; bh=Y8D71ksWjDUHnBAOs/hfrlKqpKuju7Vo3jhZubtX+nw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=kzwccSiPUB6DmFsk5YjCi8tWZ4QOlxSn3suI7pifNKIIPU0iE+lb6/u67xH+5nTPFaqTTapNBN4qb1l1P94PNMuKOHDU6ngCHEQg3p//wvkcckMewjBXCaSS30Fbp7QsYgTukJTod2pnteY/GJ5xqUyPYsC8o9v7jbqLqEsZrr8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gbSReGHG; 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="gbSReGHG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 970C51F000E9; Tue, 30 Jun 2026 11:06:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782817586; bh=KziUE99JyCXJvfI9gWixTL5K4MSlxqncGllEjWQ7FFU=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=gbSReGHGi6BBBm1jGbagqwMr3EDZYuq6/aVP0SmPh5q3XsQf2OyoXmHLpD7jKFuXN rz/DuYqpdl8L3DXfBDTvQ7kL0hoqzMjWXWkW8p3niXHmRq2KJO1lhQLr2BGi+0/xW1 1QN7bIbJ1gjbY8koWTFN6rYpDeBENnDuuo3Di/Qb6ZxIaSfy0sRjdwCT0pQ7sNxCeM zOq3PScln3ortRJ02gpXTvE3pm2Lk4DnNeyCU0ee7DMVL+uHvo0MsRKXj5dTHKpBrf Xhnkz9uFlwHhr0XSswtrvXEZTcdZ9vbGyco4qHRo1JKwGuORedI6VrlOrYZTkpFs86 RPXDfpVVtd2LA== From: Pratyush Yadav To: Wandun Chen Cc: chenhuacai@kernel.org, kernel@xen0n.name, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, robh@kernel.org, saravanak@kernel.org, bhe@redhat.com, rppt@kernel.org, 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, iommu@lists.linux.dev, zhaomeijing@lixiang.com, catalin.marinas@arm.com, will@kernel.org, alex@ghiti.fr, akpm@linux-foundation.org, pasha.tatashin@soleen.com, pratyush@kernel.org, ruirui.yang@linux.dev, m.szyprowski@samsung.com, robin.murphy@arm.com Subject: Re: [PATCH v4 07/10] of: reserved_mem: add kdump helpers to exclude non-dumpable regions In-Reply-To: <20260630074715.4126796-8-chenwandun1@gmail.com> (Wandun Chen's message of "Tue, 30 Jun 2026 15:47:11 +0800") References: <20260630074715.4126796-1-chenwandun1@gmail.com> <20260630074715.4126796-8-chenwandun1@gmail.com> Date: Tue, 30 Jun 2026 13:06:21 +0200 Message-ID: <2vxzmrwci8ya.fsf@kernel.org> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Tue, Jun 30 2026, Wandun Chen wrote: > From: Wandun Chen > > Add two helpers to exclude non-dumpable regions for arch-specific > code. > > - of_reserved_mem_kdump_nr_ranges() returns the count of regions > that are not dumpable. Each excluded region may split an existing > crash_mem range into two, so callers use this to calculate > crash_mem allocation size. > > - of_reserved_mem_kdump_exclude() walks reserved_mem[] and calls > crash_exclude_mem_range() for every non-dumpable region. > > Signed-off-by: Wandun Chen > Tested-by: Meijing Zhao Acked-by: Pratyush Yadav [...] -- Regards, Pratyush Yadav