linux-kernel - Re: [PULL] x86 cpumask work

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Date:	Tue, 17 Mar 2009 13:56:30 -0500
From:	Cliff Wickman <cpw@....com>
To:	mingo@...e.hu
Cc:	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au,
	travis@....com, steiner@....com
Subject: Re: [PULL] x86 cpumask work


From: Cliff Wickman <cpw@....com>

A patch on Mar13 2009 introduced a bug. I hope the below 1-line fix can
make the 'urgent' list, and get fixed before that patch moves on.

The Mar13 patch is saved at
http://marc.info/?l=linux-kernel&m=123683186504948&w=2

The allocation of per-cpu uv_flush_tlb_mask's in arch/x86/kernel/tlb_uv.c
changed a variable that should been reset to 0.

Signed-off-by: Cliff Wickman <cpw@....com>
Acked-by: Mike Travis <travis@....com>
---
 arch/x86/kernel/tlb_uv.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux/arch/x86/kernel/tlb_uv.c
===================================================================
--- linux.orig/arch/x86/kernel/tlb_uv.c	2009-03-16 11:14:40.000000000 -0500
+++ linux/arch/x86/kernel/tlb_uv.c	2009-03-16 11:15:38.000000000 -0500
@@ -777,6 +777,7 @@ static int __init uv_bau_init(void)
 	BUG_ON(!uv_bau_table_bases);
 
 	last_blade = -1;
+	cur_cpu = 0;
 	for_each_online_node(node) {
 		blade = uv_node_to_blade_id(node);
 		if (blade == last_blade)
--
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