From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Coquelin Subject: Re: [PATCH v2 0/3] Add code to release secondary cores from holding pen. Date: Wed, 10 Jun 2015 10:03:15 +0200 Message-ID: <5577EF43.6020600@st.com> References: <1433856824-30689-1-git-send-email-peter.griffin@linaro.org> <7hd214sx9b.fsf@deeprootsystems.com> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <7hd214sx9b.fsf-1D3HCaltpLuhEniVeURVKkEOCMrvLtNR@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Kevin Hilman , Peter Griffin Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, srinivas.kandagatla-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, patrice.chotard-qxv4g6HH51o@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org, lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org Hi Kevin, On 06/09/2015 05:43 PM, Kevin Hilman wrote: > Peter Griffin writes: > >> Hi Maxime, Patrice, Srini, Kevin, Olof & Arnd, >> >> This patchset adds in the necessary code to manage the holding pen for STi >> platforms. >> >> Due to all the STi upstream devs using JTAG to boot the STi boards, there >> is currently a SMP bug when booting upstream kernels via u-boot where >> only the primary core is brought up. >> >> This hasn't been noticed until now because when booting via JTAG the >> stlinux_arm_boot script sets the PC of the secondary cores directly. >> >> With these patches applied booting via u-boot now works correctly. >> >> [ 0.045456] CPU: Testing write buffer coherency: ok >> [ 0.045597] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 >> [ 0.045734] Setting up static identity map for 0x40209000 - 0x40209098 >> [ 0.065047] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 >> [ 0.065081] Brought up 2 CPUs >> [ 0.065089] SMP: Total of 2 processors activated (5983.43 BogoMIPS). >> [ 0.065092] CPU: All CPU(s) started in SVC mode. >> >> Kevin / Olof / Arnd - Can you put this fix into the next ARM SoC fixes pull >> request (if there is one)? > At this stage of the cycle (we're already at -rc7) we limit things to > strictly regression fixes, and seems this has been broken for some time, > so I think this will have to wait for v4.2. > > After addresing the comments, Maxime should queue this up for arm-soc so > we can get it in early in the v4.2-rc cycle. Ok, I will take it for v4.2-rc cycle. Thanks, Maxime -- 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