linux-kernel - Re: kvm kdump regression

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Date:	Mon, 20 Sep 2010 20:40:13 -0400 (EDT)
From:	CAI Qian <caiqian@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	graff yang <graff.yang@...il.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	kexec <kexec@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>, dhowells@...hat.com,
	sonic adi <sonic.adi@...il.com>,
	Chris Lalancette <clalance@...hat.com>,
	Avi Kivity <avi@...hat.com>
Subject: Re: kvm kdump regression


----- "Tejun Heo" <tj@...nel.org> wrote:

> Hello,
> 
> Thanks a lot for testing.  Can you please verify whether the
> following patch fixes the problem?
Yes, it did.
> 
> diff --git a/mm/percpu.c b/mm/percpu.c
> index 58c572b..c76ef38 100644
> --- a/mm/percpu.c
> +++ b/mm/percpu.c
> @@ -1401,9 +1401,9 @@ int __init pcpu_setup_first_chunk(const struct
> pcpu_alloc_info *ai,
> 
>  			if (pcpu_first_unit_cpu == NR_CPUS)
>  				pcpu_first_unit_cpu = cpu;
> +			pcpu_last_unit_cpu = cpu;
>  		}
>  	}
> -	pcpu_last_unit_cpu = cpu;
>  	pcpu_nr_units = unit;
> 
>  	for_each_possible_cpu(cpu)
--
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