From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ozlabs.org ([2402:b800:7003:1:1::1]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QlvX6-00072P-46 for kexec@lists.infradead.org; Wed, 27 Jul 2011 04:15:45 +0000 Date: Wed, 27 Jul 2011 14:15:03 +1000 From: Anton Blanchard Subject: [PATCH] powerpc: pseries: Fix kexec on machines with more than 4TB of RAM Message-ID: <20110727141503.3faa93f5@kryten> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=twosheds.infradead.org@lists.infradead.org To: benh@kernel.crashing.org, paulus@samba.org, mikey@neuling.org, miltonm@bga.com Cc: kexec@lists.infradead.org, linuxppc-dev@lists.ozlabs.org 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 Cc: --- Index: linux-powerpc/arch/powerpc/platforms/pseries/lpar.c =================================================================== --- linux-powerpc.orig/arch/powerpc/platforms/pseries/lpar.c 2011-07-27 13:50:18.408091576 +1000 +++ linux-powerpc/arch/powerpc/platforms/pseries/lpar.c 2011-07-27 13:51:19.359196131 +1000 @@ -203,7 +203,7 @@ static void pSeries_lpar_hptab_clear(voi 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 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec