From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Message-ID: <1411604682.6001.178.camel@smoke> Subject: Re: [PATCH 08/13] arm64: Use cpu_ops for smp_stop From: Geoff Levand Date: Wed, 24 Sep 2014 17:24:42 -0700 In-Reply-To: <20140915190616.GC14191@leverpostej> References: <36ad9302497338a34cc7174a72a2ac99ceb16fdb.1410302383.git.geoff@infradead.org> <20140915190616.GC14191@leverpostej> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Mark Rutland Cc: Marc Zyngier , Catalin Marinas , Will Deacon , "linux-arm-kernel@lists.infradead.org" , "kexec@lists.infradead.org" , "christoffer.dall@linaro.org" Hi Mark, On Mon, 2014-09-15 at 20:06 +0100, Mark Rutland wrote: > Hi Geoff, > > On Tue, Sep 09, 2014 at 11:49:05PM +0100, Geoff Levand wrote: > > The current implementation of ipi_cpu_stop() is just a tight infinite loop > > around cpu_relax(). This infinite loop implementation is OK if the machine > > will soon do a poweroff, but it doesn't have any mechanism to allow a CPU > > to be brought back on-line, nor is it compatible with kexec re-boot. > > I don't see why we should use this when we have disable_nonboot_cpus. I decided to use disable_nonboot_cpus, so this patch is no longer needed. I'll put the rework of disable_nonboot_cpus to not depend on CONFIG_PM_SLEEP_SMP on my todo list. -Geoff _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec