| | Date | Sun, 05 Feb 2012 23:10:29 +0100 | | From | Willy Tarreau <> | | Subject | [PATCH 40/91] powerpc: pseries: Fix kexec on machines with more than 4TB of RAM |
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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
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