linux-kernel - Re: [PATCH] x86: Use online node real index in calulate_tbl

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Date:	Sun, 31 Oct 2010 11:38:59 +0800
From:	Shaohua Li <shaohua.li@...el.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: Use online node real index in
 calulate_tbl_offset()

On Fri, 2010-10-29 at 10:18 +0800, Yinghai Lu wrote:
> Found one numa system that doesn't have ram installed in first socket
> hang during executing init scripts.
> 
> bisect to:
> 
> |commit 932967202182743c01a2eee4bdfa2c42697bc586
> |Author: Shaohua Li <shaohua.li@...el.com>
> |Date:   Wed Oct 20 11:07:03 2010 +0800
> |
> |    x86: Spread tlb flush vector between nodes
> 
> It turns out when first socket is not online could have cpus on node1
> tlb_offset set to bigger than NUM_INVALIDATE_TLB_VECTORS.
> 
> that could affect systems like 4 sockets, but socket 2 doesn't
> have installed, sockets 3 will get too big tlb_offset.
> 
> Need to use real online node idx.
> 
Thanks for catching it up.

Acked-by: Shaohua Li <shaohua.li@...el.com>

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