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Message-ID: <20140414115600.0d5dbbb5@thinkpad> Date: Mon, 14 Apr 2014 11:56:00 +0200 From: Igor Mammedov <imammedo@...hat.com> To: Ingo Molnar <mingo@...nel.org> Cc: linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, x86@...nel.org, bp@...e.de, paul.gortmaker@...driver.com, JBeulich@...e.com, prarit@...hat.com, drjones@...hat.com, toshi.kani@...com, riel@...hat.com, gong.chen@...ux.intel.com, andi@...stfloor.org, lenb@...nel.org, rjw@...ysocki.net, linux-acpi@...r.kernel.org Subject: Re: [PATCH v3 3/5] x86: fix list corruption on CPU hotplug On Mon, 14 Apr 2014 11:19:54 +0200 Ingo Molnar <mingo@...nel.org> wrote: > > * Igor Mammedov <imammedo@...hat.com> wrote: > > > currently if AP wake up is failed, master CPU marks AP as not present > > in do_boot_cpu() by calling set_cpu_present(cpu, false). > > That leads to following list corruption on the next physical CPU > > hotplug: > > Shouldn't this fix precede the main change to the smp bootup logic? > > Can this bug trigger with current upstream kernels? That's not impossible, tests showed that with current kernel there will be other problems due wild AP running around. I'll reorder patch anyway. > > Thanks, > > Ingo -- Regards, Igor -- 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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