From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754365Ab2L1UlA (ORCPT ); Fri, 28 Dec 2012 15:41:00 -0500 Received: from jacques.telenet-ops.be ([195.130.132.50]:38925 "EHLO jacques.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754003Ab2L1Uk7 (ORCPT ); Fri, 28 Dec 2012 15:40:59 -0500 From: Geert Uytterhoeven To: Ralf Baechle , linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH] mips: Export min_low_pfn if CONFIG_FLATMEM Date: Fri, 28 Dec 2012 21:40:56 +0100 Message-Id: <1356727256-3172-1-git-send-email-geert@linux-m68k.org> X-Mailer: git-send-email 1.7.0.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If CONFIG_FLATMEM=y on MIPS, pfn_valid() (and thus virt_addr_valid()) uses min_low_pfn. However, min_low_pfn is not exported by the generic bootmem code. As of commit e52a29326462badd9ceec90a9eb2ac2a8550e02e ("aoe: avoid races between device destruction and discovery"), aoeblk_open() uses virt_addr_valid(), causing a link error in the modular case: ERROR: "min_low_pfn" [drivers/block/aoe/aoe.ko] undefined! Add a custom export to fix this, just like is done for ia64 in arch/ia64/kernel/ia64_ksyms.c. Signed-off-by: Geert Uytterhoeven --- http://kisskb.ellerman.id.au/kisskb/buildresult/7864918/ arch/mips/kernel/mips_ksyms.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c index df1e3e4..8579bb8 100644 --- a/arch/mips/kernel/mips_ksyms.c +++ b/arch/mips/kernel/mips_ksyms.c @@ -60,3 +60,8 @@ EXPORT_SYMBOL(invalid_pte_table); /* _mcount is defined in arch/mips/kernel/mcount.S */ EXPORT_SYMBOL(_mcount); #endif + +#ifdef CONFIG_FLATMEM +#include +EXPORT_SYMBOL(min_low_pfn); /* defined by bootmem.c, but not exported by generic code */ +#endif -- 1.7.0.4