diff mbox

[v4,07/13] arm64: use more granular reservations for static page table allocations

Message ID 1429112064-19952-8-git-send-email-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel April 15, 2015, 3:34 p.m. UTC 
Before introducing new statically allocated page tables and increasing
their alignment in subsequent patches, update the reservation logic
so that only pages that are in actual use end up as reserved with
memblock.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 arch/arm64/mm/init.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 1599a5c5e94a..0e7d9a2aad39 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -37,6 +37,7 @@ 
 
 #include <asm/fixmap.h>
 #include <asm/memory.h>
+#include <asm/mmu_context.h>
 #include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/sizes.h>
@@ -173,11 +174,13 @@  void __init arm64_memblock_init(void)
 	 * Register the kernel text, kernel data, initrd, and initial
 	 * pagetables with memblock.
 	 */
-	memblock_reserve(__pa(_text), _end - _text);
+	memblock_reserve(__pa(_text), __bss_stop - _text);
 #ifdef CONFIG_BLK_DEV_INITRD
 	if (initrd_start)
 		memblock_reserve(__virt_to_phys(initrd_start), initrd_end - initrd_start);
 #endif
+	memblock_reserve(__pa(idmap_pg_dir), IDMAP_DIR_SIZE);
+	memblock_reserve(__pa(swapper_pg_dir), SWAPPER_DIR_SIZE);
 
 	early_init_fdt_scan_reserved_mem();