path: root/arch/arm/include/asm/memory.h
diff options
authorRussell King <rmk+kernel@arm.linux.org.uk>2015-04-04 20:09:46 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2015-06-01 23:48:19 +0100
commitb2c3e38a54714e917c9e8675ff5812dca1c0f39d (patch)
tree0d5e9747b2c73ccd4c961c8d6a50841b52cf11fd /arch/arm/include/asm/memory.h
parentARM: cleanup early_paging_init() calling (diff)
ARM: redo TTBR setup code for LPAE
Re-engineer the LPAE TTBR setup code. Rather than passing some shifted address in order to fit in a CPU register, pass either a full physical address (in the case of r4, r5 for TTBR0) or a PFN (for TTBR1). This removes the ARCH_PGD_SHIFT hack, and the last dangerous user of cpu_set_ttbr() in the secondary CPU startup code path (which was there to re-set TTBR1 to the appropriate high physical address space on Keystone2.) Tested-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/memory.h')
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 184def0e1652..3a72d69b3255 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -18,8 +18,6 @@
#include <linux/types.h>
#include <linux/sizes.h>
-#include <asm/cache.h>
#include <mach/memory.h>
@@ -133,20 +131,6 @@
#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
- * Minimum guaranted alignment in pgd_alloc(). The page table pointers passed
- * around in head.S and proc-*.S are shifted by this amount, in order to
- * leave spare high bits for systems with physical address extension. This
- * does not fully accomodate the 40-bit addressing capability of ARM LPAE, but
- * gives us about 38-bits or so.
- */
-#define ARCH_PGD_SHIFT 0
-#define ARCH_PGD_MASK ((1 << ARCH_PGD_SHIFT) - 1)
* PLAT_PHYS_OFFSET is the offset (from zero) of the start of physical
* memory. This is used for XIP and NoMMU kernels, and on platforms that don't
* have CONFIG_ARM_PATCH_PHYS_VIRT. Assembly code must always use