linux-kernel - [PATCH] x86: change cachemode symbols to non-gpl to avoid breaking out-of-tree modules

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Date:	Thu, 22 Jan 2015 12:43:17 +0100
From:	Juergen Gross <jgross@...e.com>
To:	hpa@...or.com, x86@...nel.org, tglx@...utronix.de,
	mingo@...hat.com, linux-kernel@...r.kernel.org, toshi.kani@...com,
	steven@...inklabs.net
Cc:	Juergen Gross <jgross@...e.com>
Subject: [PATCH] x86: change cachemode symbols to non-gpl to avoid breaking out-of-tree modules

Commit 281d4078bec366d60990add9d91a952953bd0d72 ("x86: Make page
cache mode a real type") introduced the symbols __cachemode2pte_tbl
and __pte2cachemode_tbl and exported them via EXPORT_SYMBOL_GPL.
This will break building out-of-tree non-gpl modules which need to
set caching mode in ptes.

Change EXPORT_SYMBOL_GPL to EXPORT-SYMBOL for these two symbols.

Reported-by: Stevan Noonan <steven@...inklabs.net>
Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/mm/init.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 08a7d31..079c3b6 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -43,7 +43,7 @@ uint16_t __cachemode2pte_tbl[_PAGE_CACHE_MODE_NUM] = {
 	[_PAGE_CACHE_MODE_WT]		= _PAGE_PCD,
 	[_PAGE_CACHE_MODE_WP]		= _PAGE_PCD,
 };
-EXPORT_SYMBOL_GPL(__cachemode2pte_tbl);
+EXPORT_SYMBOL(__cachemode2pte_tbl);
 uint8_t __pte2cachemode_tbl[8] = {
 	[__pte2cm_idx(0)] = _PAGE_CACHE_MODE_WB,
 	[__pte2cm_idx(_PAGE_PWT)] = _PAGE_CACHE_MODE_WC,
@@ -54,7 +54,7 @@ uint8_t __pte2cachemode_tbl[8] = {
 	[__pte2cm_idx(_PAGE_PCD | _PAGE_PAT)] = _PAGE_CACHE_MODE_UC_MINUS,
 	[__pte2cm_idx(_PAGE_PWT | _PAGE_PCD | _PAGE_PAT)] = _PAGE_CACHE_MODE_UC,
 };
-EXPORT_SYMBOL_GPL(__pte2cachemode_tbl);
+EXPORT_SYMBOL(__pte2cachemode_tbl);
 
 static unsigned long __initdata pgt_buf_start;
 static unsigned long __initdata pgt_buf_end;
-- 
2.1.2

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