linux-kernel - Re: [PATCH] x86: bau_msg_head points to a_queue_first in uv_table_bases

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Message-ID: <20100117071227.GC19512@elte.hu>
Date:	Sun, 17 Jan 2010 08:12:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Roel Kluin <roel.kluin@...il.com>, Cliff Wickman <cpw@....com>,
	Robin Holt <holt@....com>, Mike Travis <travis@....com>
Cc:	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: bau_msg_head points to a_queue_first in
 uv_table_bases_finish()


* Roel Kluin <roel.kluin@...il.com> wrote:

> bau_msg_head should point to bau_msg_head
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
> ---
> Is this correct?
> 
> diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c
> index 364d015..3d66331 100644
> --- a/arch/x86/kernel/tlb_uv.c
> +++ b/arch/x86/kernel/tlb_uv.c
> @@ -691,7 +691,7 @@ uv_table_bases_finish(int blade,
>  			continue;
>  
>  		bcp = (struct bau_control *)&per_cpu(bau_control, cpu);
> -		bcp->bau_msg_head	= bau_tablesp->va_queue_first;
> +		bcp->bau_msg_head	= bau_tablesp->bau_msg_head;
>  		bcp->va_queue_first	= bau_tablesp->va_queue_first;
>  		bcp->va_queue_last	= bau_tablesp->va_queue_last;
>  		bcp->msg_statuses	= bau_tablesp->msg_statuses;

Seems like you either caught a real bug - or that there's a somewhat quirky 
initialization sequence here which should be commented upon in the source.

Cliff, Robin, what's your take on Roel's patch?

Thanks,

	Ingo
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