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Date: Thu, 6 Mar 2014 08:08:32 +0100 From: Ingo Molnar <mingo@...nel.org> To: Igor Mammedov <imammedo@...hat.com> Cc: linux-kernel@...r.kernel.org, drjones@...hat.com, toshi.kani@...com, prarit@...hat.com, kirill.shutemov@...ux.intel.com, JBeulich@...e.com, peterz@...radead.org, paul.gortmaker@...driver.com, seiji.aguchi@....com, bp@...e.de, hpa@...or.com, mingo@...hat.com, x86@...nel.org, tglx@...utronix.de, riel@...hat.com Subject: Re: [PATCH] abort secondary CPU bring-up gracefully if do_boot_cpu timed out on cpu_callin_mask * Igor Mammedov <imammedo@...hat.com> wrote: > Master CPU may timeout before cpu_callin_mask is set and cancel > booting CPU, but being onlined CPU still continues to boot, sets > cpu_active_mask (CPU_STARTING notifiers) and spins in > check_tsc_sync_target() for master cpu to arrive. Following attempt > to online another cpu hangs in stop_machine, initiated from here: The changelog needs to prominently contain a description of the practical relevance of this patch: has the hang triggered on any system and under what circumstances, and did the patch resolve the hang, etc.? Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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