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

From: Kamal Mostafa
Date: Thu Feb 04 2016 - 17:45:22 EST


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

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

From: Kamal Mostafa <kamal@xxxxxxxxxxxxx>

This reverts commit 22140f9ffcaf90af70738b818e60be7a0c189c45.

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

Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
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