From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geoff Levand Subject: Re: [PATCH v5.5] of/fdt: export fdt blob as /sys/firmware/fdt Date: Wed, 19 Nov 2014 10:32:51 -0800 Message-ID: <1416421971.23886.71.camel@smoke> References: <1415984735-32388-1-git-send-email-ard.biesheuvel@linaro.org> <20141118165145.4F6A8C40966@trevor.secretlab.ca> <20141118172545.GC14323@leverpostej> <20141118221103.4ECB3C40966@trevor.secretlab.ca> <1416402576.29243.35.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1416402576.29243.35.camel-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ian Campbell Cc: Grant Likely , Mark Rutland , Ard Biesheuvel , "leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" , "rob.herring-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" List-Id: devicetree@vger.kernel.org Hi Ian, On Wed, 2014-11-19 at 13:09 +0000, Ian Campbell wrote: > On Tue, 2014-11-18 at 22:11 +0000, Grant Likely wrote: > > > > * It also helps with exposing the reserved map to userspace, but kexec > > > > has done without that feature for years, and it is in the process of > > > > being deprecated in favour of /reserved-memory anyway. > > > > > > This is the first I'd heard of the reserve map being deprecated, and > > > we're going to have DTs with reserved map entries for a long time going > > > forwards. > > > > Deprecated, not removed or disabled. It will still work pretty much > > forever, but users should be encouraged to move to the reserve-memory > > tree. > > I'm curious why that should be for the "OS should never touch this, here > be dragons" type memory, what are the benefits of the new scheme in that > case? /memreserve/ device tree entries are not available in /proc/device-tree, but reserved-memory nodes are. Some solution is needed to get all reserved memory info into the dtb passed to the second stage kernel during a kexec re-boot. -Geoff -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html