powerpc: pseries: Fix kexec on machines with more than 4TB of RAM

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>
Cc: <stable@kernel.org>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index f7205d344efd7577c8069bfc565dc21506101e4f..225aecf7b425dcae4c81d9b164b0c19baf5efba0 100644 (file)
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -204,7 +204,7 @@ static void pSeries_lpar_hptab_clear(void)
                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