[PATCH] ppc64: Updated Olof misc updates 3/3
Replace some of the hard-coded constants with PAGE_SIZE/SHIFT/ORDER where
appropriate.
Likewise, in a couple of places it doesn't make sense to base some
allocations on page size when all that's required is a constant 4K,
etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index 72c6104..22a5ee0 100644
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -1992,7 +1992,7 @@
*/
.section ".bss"
- .align 12
+ .align PAGE_SHIFT
.globl empty_zero_page
empty_zero_page:
diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S
index e7241ad..a25b597 100644
--- a/arch/ppc64/kernel/misc.S
+++ b/arch/ppc64/kernel/misc.S
@@ -329,7 +329,7 @@
/* Flush the dcache */
ld r7,PPC64_CACHES@toc(r2)
- clrrdi r3,r3,12 /* Page align */
+ clrrdi r3,r3,PAGE_SHIFT /* Page align */
lwz r4,DCACHEL1LINESPERPAGE(r7) /* Get # dcache lines per page */
lwz r5,DCACHEL1LINESIZE(r7) /* Get dcache line size */
mr r6,r3
diff --git a/arch/ppc64/kernel/vmlinux.lds.S b/arch/ppc64/kernel/vmlinux.lds.S
index 0306510..f34d514 100644
--- a/arch/ppc64/kernel/vmlinux.lds.S
+++ b/arch/ppc64/kernel/vmlinux.lds.S
@@ -1,3 +1,4 @@
+#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
OUTPUT_ARCH(powerpc:common64)
@@ -17,7 +18,7 @@
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
_etext = .;
}
@@ -43,7 +44,7 @@
/* will be freed after init */
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
__init_begin = .;
.init.text : {
@@ -83,7 +84,7 @@
SECURITY_INIT
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
.init.ramfs : {
__initramfs_start = .;
*(.init.ramfs)
@@ -96,18 +97,21 @@
__per_cpu_end = .;
}
+ . = ALIGN(PAGE_SIZE);
. = ALIGN(16384);
__init_end = .;
/* freed after init ends here */
/* Read/write sections */
+ . = ALIGN(PAGE_SIZE);
. = ALIGN(16384);
/* The initial task and kernel stack */
.data.init_task : {
*(.data.init_task)
}
+ . = ALIGN(PAGE_SIZE);
.data.page_aligned : {
*(.data.page_aligned)
}
@@ -129,18 +133,18 @@
__toc_start = .;
*(.got)
*(.toc)
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
_edata = .;
}
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
.bss : {
__bss_start = .;
*(.bss)
__bss_stop = .;
}
- . = ALIGN(4096);
+ . = ALIGN(PAGE_SIZE);
_end = . ;
}
diff --git a/include/asm-ppc64/elf.h b/include/asm-ppc64/elf.h
index c919a89..e27c294 100644
--- a/include/asm-ppc64/elf.h
+++ b/include/asm-ppc64/elf.h
@@ -5,6 +5,7 @@
#include <asm/ptrace.h>
#include <asm/cputable.h>
#include <asm/auxvec.h>
+#include <asm/page.h>
/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
@@ -146,7 +147,7 @@
#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)
#define USE_ELF_CORE_DUMP
-#define ELF_EXEC_PAGESIZE 4096
+#define ELF_EXEC_PAGESIZE PAGE_SIZE
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of
diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 737e85a..d2b0b79 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -30,7 +30,7 @@
/* Location of cpu0's segment table */
#define STAB0_PAGE 0x6
-#define STAB0_PHYS_ADDR (STAB0_PAGE<<PAGE_SHIFT)
+#define STAB0_PHYS_ADDR (STAB0_PAGE<<12)
#ifndef __ASSEMBLY__
extern char initial_stab[];
diff --git a/include/asm-ppc64/thread_info.h b/include/asm-ppc64/thread_info.h
index 0494df6..71244d8 100644
--- a/include/asm-ppc64/thread_info.h
+++ b/include/asm-ppc64/thread_info.h
@@ -54,9 +54,9 @@
/* thread information allocation */
-#define THREAD_ORDER 2
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
-#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER)
+#define THREAD_SHIFT 14
+#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT)
+#define THREAD_SIZE (1 << THREAD_SHIFT)
#ifdef CONFIG_DEBUG_STACK_USAGE
#define alloc_thread_info(tsk) \
({ \