linux-kernel - [PATCH 4.2.y-ckt 01/64] [4.2-stable only] Revert "arm64: mm: use correct mapping granularity under DEBUG

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Message-Id: <1454625887-18915-2-git-send-email-kamal@canonical.com>
Date:	Thu,  4 Feb 2016 14:43:44 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 01/64] [4.2-stable only] Revert "arm64: mm: use correct mapping granularity under DEBUG_RODATA"

4.2.8-ckt4 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Kamal Mostafa <kamal@...onical.com>

This reverts commit 22140f9ffcaf90af70738b818e60be7a0c189c45.

Not suitable for 4.2-stable (no SWAPPER_BLOCK_SIZE definition).

Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm64/mm/mmu.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 3d016b9..9cc82a4 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -308,8 +308,8 @@ static void __init __map_memblock(phys_addr_t start, phys_addr_t end)
 	 * for now. This will get more fine grained later once all memory
 	 * is mapped
 	 */
-	unsigned long kernel_x_start = round_down(__pa(_stext), SWAPPER_BLOCK_SIZE);
-	unsigned long kernel_x_end = round_up(__pa(__init_end), SWAPPER_BLOCK_SIZE);
+	unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
+	unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
 
 	if (end < kernel_x_start) {
 		create_mapping(start, __phys_to_virt(start),
@@ -397,18 +397,18 @@ void __init fixup_executable(void)
 {
 #ifdef CONFIG_DEBUG_RODATA
 	/* now that we are actually fully mapped, make the start/end more fine grained */
-	if (!IS_ALIGNED((unsigned long)_stext, SWAPPER_BLOCK_SIZE)) {
+	if (!IS_ALIGNED((unsigned long)_stext, SECTION_SIZE)) {
 		unsigned long aligned_start = round_down(__pa(_stext),
-							 SWAPPER_BLOCK_SIZE);
+							SECTION_SIZE);
 
 		create_mapping(aligned_start, __phys_to_virt(aligned_start),
 				__pa(_stext) - aligned_start,
 				PAGE_KERNEL);
 	}
 
-	if (!IS_ALIGNED((unsigned long)__init_end, SWAPPER_BLOCK_SIZE)) {
+	if (!IS_ALIGNED((unsigned long)__init_end, SECTION_SIZE)) {
 		unsigned long aligned_end = round_up(__pa(__init_end),
-							  SWAPPER_BLOCK_SIZE);
+							SECTION_SIZE);
 		create_mapping(__pa(__init_end), (unsigned long)__init_end,
 				aligned_end - __pa(__init_end),
 				PAGE_KERNEL);
-- 
1.9.1