From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754640AbaDOOmc (ORCPT ); Tue, 15 Apr 2014 10:42:32 -0400 Received: from cantor2.suse.de ([195.135.220.15]:57091 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751428AbaDOOlW (ORCPT ); Tue, 15 Apr 2014 10:41:22 -0400 From: Mel Gorman To: Ingo Molnar , Peter Anvin Cc: Fengguang Wu , Linus Torvalds , Steven Noonan , Rik van Riel , David Vrabel , Andrew Morton , Peter Zijlstra , Andrea Arcangeli , Dave Hansen , Srikar Dronamraju , Cyrill Gorcunov , Mel Gorman , Linux-X86 , Linux-MM , LKML Subject: [PATCH 2/3] x86: Require x86-64 for automatic NUMA balancing Date: Tue, 15 Apr 2014 15:41:15 +0100 Message-Id: <1397572876-1610-3-git-send-email-mgorman@suse.de> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1397572876-1610-1-git-send-email-mgorman@suse.de> References: <1397572876-1610-1-git-send-email-mgorman@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 32-bit support for NUMA is an oddity on its own but with automatic NUMA balancing on top there is a reasonable risk that the CPUPID information cannot be stored in the page flags. This patch removes support for automatic NUMA support on 32-bit x86. Signed-off-by: Mel Gorman --- arch/x86/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 0af5250..084b1c1 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -26,7 +26,7 @@ config X86 select ARCH_MIGHT_HAVE_PC_SERIO select HAVE_AOUT if X86_32 select HAVE_UNSTABLE_SCHED_CLOCK - select ARCH_SUPPORTS_NUMA_BALANCING + select ARCH_SUPPORTS_NUMA_BALANCING if X86_64 select ARCH_SUPPORTS_INT128 if X86_64 select ARCH_WANTS_PROT_NUMA_PROT_NONE select HAVE_IDE -- 1.8.4.5