lkml.org 
[lkml]   [2012]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 40/91] powerpc: pseries: Fix kexec on machines with more than 4TB of RAM
2.6.27-longterm review patch.  If anyone has any objections, please let us know.

------------------

commit bed9a31527af8ff3dfbad62a1a42815cef4baab7 upstream.

On a box with 8TB of RAM the MMU hashtable is 64GB in size. That
means we have 4G PTEs. pSeries_lpar_hptab_clear was using a signed
int to store the index which will overflow at 2G.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
arch/powerpc/platforms/pseries/lpar.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

Index: longterm-2.6.27/arch/powerpc/platforms/pseries/lpar.c
===================================================================
--- longterm-2.6.27.orig/arch/powerpc/platforms/pseries/lpar.c 2012-02-05 22:34:33.813915314 +0100
+++ longterm-2.6.27/arch/powerpc/platforms/pseries/lpar.c 2012-02-05 22:34:40.526914898 +0100
@@ -371,7 +371,7 @@
unsigned long ptel;
} ptes[4];
long lpar_rc;
- int i, j;
+ unsigned long i, j;

/* Read in batches of 4,
* invalidate only valid entries not in the VRMA



\
 
 \ /
  Last update: 2012-02-05 23:39    [W:0.188 / U:5.312 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site