From mboxrd@z Thu Jan 1 00:00:00 1970 From: sudeep.holla@arm.com (Sudeep Holla) Date: Tue, 17 Jul 2018 16:34:28 +0100 Subject: [PATCH v3 5/7] arm64: smp: remove cpu and numa topology information when hotplugging out CPU In-Reply-To: References: <1530874968-5960-1-git-send-email-sudeep.holla@arm.com> <1530874968-5960-6-git-send-email-sudeep.holla@arm.com> <20180717140536.GA27323@e107155-lin> Message-ID: <1c47b3fd-59ba-aba4-43b2-ed98e750887b@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 17/07/18 16:06, Geert Uytterhoeven wrote: > Hi Sudeep, > > On Tue, Jul 17, 2018 at 4:05 PM Sudeep Holla wrote: >> On Tue, Jul 17, 2018 at 02:58:14PM +0200, Geert Uytterhoeven wrote: >>> On Fri, Jul 6, 2018 at 1:04 PM Sudeep Holla wrote: [...] >>> All but CPU0 tested, as expected. >> >> OK, does the firmware on this system not allow CPU0 to be hotplugged out ? > > Correct. But that's not the issue. > Yes, was just trying to understand the behavior. [..] >>> Woops, CPU5-7 are not tested. >> >> I don't understand what you mean by that. From the logs, it looks fine. >> What do you mean by "CPU5-7 are not tested" ? >> Sorry, but I am finding it hard to understand the issue from the log. > > The above is not the log, but the diff between the log before and after the bad > commit. So lines prefixed with "-" are no longer printed. > Before, CPU4-7 were tested for hotplug in group 1. > After, only CPU4 is tested for hotplug in group 1. > Ah OK, I think I now understand what is the issue, will try to replicate at my end and get back to you. >> Also, it would be good to know your config. Is it defconfig - NUMA as before ? > > arm64 defconfig + CONFIG_ARM_PSCI_CHECKER=y should do. > OK thanks, that is simpler. -- Regards, Sudeep