From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 67EBEC77B6F for ; Fri, 14 Apr 2023 09:51:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Md+v7KF1iD0YTucrvK0DTTx096BwXAqZlofYUcTOuDc=; b=B3BRZYF4/1CiBv Ag7i7Zooh9NGhNDVUKCnti0V5MZ3voKYWMiU03ehGs6FWZKvZFV9Y5uCuE+IWIik+HjEoNn9uHf20 9rsITMjNadLIVCV6NyrhiKF8QN+iN1G5X6nlTBsuApNbiFLFqUZhAlgPdQcAv+BQeol8VQ4scW1x6 VXJtGlC7Laz8wFLUbMzQ8GiVC2uPsTflI86pSDJAXVfszikvcUg/VazRP3LOP3eEydg12ZqXf11Q8 H5cHfUnPUOhL6UlxkSgdUy4iPfbC78XSxgczEFBu96/ZHFksRjpB2BvaKWScIRIlgXbAkFURlu8iB P6RKfKPGluKBcpCD2/gw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pnG4L-008uuE-0A; Fri, 14 Apr 2023 09:50:13 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pnG4I-008usr-2V for linux-arm-kernel@lists.infradead.org; Fri, 14 Apr 2023 09:50:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1681465807; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=yyikU5M9d76wbxiGEiGM6t7sb6u7giUEixuT9mv0t1Y=; b=JMn/U+0r8SIJLM7TFaVBtFUo+ya1hpVxotVVXo2wVr3oPAJT9JuWp+4kZea2XXNpDOVM6G 7cvSZqHSchSs+uTaOaBGx0N+RCCTEIWQElm1hrm+zDJdybah9HgWEc5AkMk6zRZ9fwB2js PuDX4LuDPuHmbk07cUowXMN5CnpV3K8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-627-XS39Y3QeNJW4OlVc1qG7KQ-1; Fri, 14 Apr 2023 05:50:02 -0400 X-MC-Unique: XS39Y3QeNJW4OlVc1qG7KQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 810C6185A7A8; Fri, 14 Apr 2023 09:50:01 +0000 (UTC) Received: from localhost (ovpn-12-58.pek2.redhat.com [10.72.12.58]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AF76A2027043; Fri, 14 Apr 2023 09:50:00 +0000 (UTC) Date: Fri, 14 Apr 2023 17:49:56 +0800 From: Baoquan He To: Catalin Marinas Cc: linux-kernel@vger.kernel.org, horms@kernel.org, thunder.leizhen@huawei.com, John.p.donnelly@oracle.com, will@kernel.org, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v5] arm64: kdump: simplify the reservation behaviour of crashkernel=,high Message-ID: References: <20230407022419.19412-1-bhe@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230414_025010_884475_85753349 X-CRM114-Status: GOOD ( 16.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 04/13/23 at 03:30pm, Catalin Marinas wrote: > On Thu, Apr 13, 2023 at 03:45:50PM +0800, Baoquan He wrote: > > I am OK with this version, or the version with min(SZ_4G, > > arm64_dma_phys_limit), or v4. Please help point out if I got your idea > > correctly. Thanks a lot. > > I think we should stick to this patch. The disabling of the ZONE_DMA(32) > is fairly specialised and you are right that we should not introduce an > artificial 4GB crashkernel boundary on such systems. The slight > confusion may be that ,high triggers a search above 4GB where there's > not such boundary but this would match the documentation anyway. OK, sounds good to me. Thanks a lot for all those careful reviewing and helpful suggestions. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel