From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (bilbo.ozlabs.org [103.22.144.67]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3zng5N5g4tzF1ky for ; Fri, 23 Feb 2018 16:39:20 +1100 (AEDT) In-Reply-To: To: Michael Bringmann , linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Cc: Nathan Fontenot , Michael Ellerman Subject: Re: powerpc: Revert support for ibm,drc-info devtree property Message-Id: <3zng5N43l3z9sWg@ozlabs.org> Date: Fri, 23 Feb 2018 16:39:20 +1100 (AEDT) List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2018-02-13 at 20:02:53 UTC, Michael Bringmann wrote: > This reverts commit 02ef6dd8109b581343ebeb1c4c973513682535d6. > > The earlier patch tried to enable support for a new property > "ibm,drc-info" on powerpc systems. > > Unfortunately, some errors in the associated patch set break things > in some of the DLPAR operations. In particular when attempting to > hot-add a new CPU or set of CPUs, the original patch failed to > properly calculate the available resources, and aborted the operation. > In addition, the original set missed several opportunities to compress > and reuse common code. > > As the associated patch set was meant to provide an optimization of > storage and performance of a set of device-tree properties for future > systems with large amounts of resources, reverting just restores > the previous behavior for existing systems. It seems unnecessary > to enable this feature and introduce the consequent problems in the > field that it will cause at this time, so please revert it for now > until testing of the corrections are finished properly. > > Signed-off-by: Michael W. Bringmann Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/c7a3275e0f9e461bb8942132aa6914 cheers