This patch tries to unify the behaviour of i386 and x86-64 when parsing
the memory (mem/memmap) parameter of the kernel command line:
On i386, the view was limited (i.e. the actual view was presented).
On x86-64, the view was full (i.e. the BIOS view was presented).
This patch moves the limit_regions() function and the print_memory_map()
function to a new file e820.c, shared between the two x86 flavours. Then
it adds calls to limit_regions() in 64 bit code.
I gave the patch a bit testing. However, it's not for merging, it's just
to get early feedback to see if that goes into the right direction.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
---
arch/x86/kernel/Makefile | 2 -
arch/x86/kernel/e820.c | 75 +++++++++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/e820_32.c | 60 +-----------------------------------
arch/x86/kernel/e820_64.c | 4 ++
arch/x86/kernel/setup_32.c | 4 +-
include/asm-x86/e820.h | 4 ++
6 files changed, 88 insertions(+), 61 deletions(-)
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -22,7 +22,7 @@ obj-y += setup_$(BITS).o i8259_$(BITS)
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
-obj-y += bootflag.o e820_$(BITS).o
+obj-y += bootflag.o e820_$(BITS).o e820.o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o
obj-$(CONFIG_X86_64) += bugs_64.o
--- /dev/null
+++ b/arch/x86/kernel/e820.c
@@ -0,0 +1,75 @@
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/kexec.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/pfn.h>
+#include <linux/uaccess.h>
+#include <linux/suspend.h>
+
+#inc...
