From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 55E4D211F9D77 for ; Tue, 9 Apr 2019 05:13:22 -0700 (PDT) Date: Tue, 9 Apr 2019 05:13:18 -0700 From: Christoph Hellwig Subject: Re: [RFC PATCH 4/5] acpi/hmat: Register special purpose memory as a device Message-ID: <20190409121318.GA16955@infradead.org> References: <155440490809.3190322.15060922240602775809.stgit@dwillia2-desk3.amr.corp.intel.com> <155440492988.3190322.4475460421334178449.stgit@dwillia2-desk3.amr.corp.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <155440492988.3190322.4475460421334178449.stgit@dwillia2-desk3.amr.corp.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Dan Williams Cc: linux-nvdimm@lists.01.org, x86@kernel.org, "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jonathan Cameron , Len Brown List-ID: On Thu, Apr 04, 2019 at 12:08:49PM -0700, Dan Williams wrote: > Memory that has been tagged EFI_SPECIAL_PURPOSE, and has performance > properties described by the ACPI HMAT is expected to have an application > specific consumer. > > Those consumers may want 100% of the memory capacity to be reserved from > any usage by the kernel. By default, with this enabling, a platform > device is created to represent this differentiated resource. This sounds more than weird. Since when did we let the firmware decide who can use the memory? _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm