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[91.13.112.110]) by smtp.gmail.com with ESMTPSA id i186sm5305532wmd.19.2019.02.08.07.17.56 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 08 Feb 2019 07:17:57 -0800 (PST) Received: from localhost.daheim ([127.0.0.1] helo=debian64.localnet) by debian64.daheim with esmtp (Exim 4.92-RC5) (envelope-from ) id 1gs7ue-0003cP-HM; Fri, 08 Feb 2019 16:17:56 +0100 From: Christian Lamparter To: Michael Ellerman Subject: Re: powerpc: Enable kernel XZ compression option on 44x Date: Fri, 08 Feb 2019 16:17:56 +0100 Message-ID: <2535516.UbJpQZMh7o@debian64> In-Reply-To: <43wwMR1cjjz9sPG@ozlabs.org> References: <43wwMR1cjjz9sPG@ozlabs.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Mackerras , Pawel Dembicki , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Friday, February 8, 2019 2:02:41 PM CET Michael Ellerman wrote: > On Thu, 2019-01-31 at 20:59:04 UTC, Christian Lamparter wrote: > > Enable kernel XZ compression option on 44x. > > Tested on a Western Digital - MyBook Live NAS. > > It takes 22 seconds for the 800 MHz CPU to decompress > > and boot a 2.63 MiB XZ-compressed kernel simpleImage. > > > > Signed-off-by: Christian Lamparter > > Applied to powerpc next, thanks. > > https://git.kernel.org/powerpc/c/423bfc69d7f491c47fc35921f7d460be > > cheers > Hello, I'm happy to report that a xz compressed kernel (as simpleImage) also booted on a TP-Link WDR4900-v1 (Freescale P1014): Hence, I'm inclined to also add PPC_85xx to list in /arch/powerpc/KConfig |select HAVE_KERNEL_XZ if PPC_BOOK3S || 44x || PPC_85xx But on the other hand, it could very well be that more or all? PPC would benifit from having HAVE_KERNEL_XZ available. What do you think? (If you know of any interesting ARCHs, I could ask around too.) Regards, Christian