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authorJeremy Fitzhardinge <jeremy@goop.org>2008-03-17 16:37:13 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-24 23:57:31 +0200
commit68db065c845bd9d0eb96946ab104b4c82d0ae9da (patch)
treea12f007e11538af668227d6da1c476af6329899f /arch/x86/kernel/reboot.c
parent90e9f53662826db3cdd6d99bd394d727b05160c1 (diff)
x86: unify KERNEL_PGD_PTRS
Make KERNEL_PGD_PTRS common, as previously it was only being defined for 32-bit. There are a couple of follow-on changes from this: - KERNEL_PGD_PTRS was being defined in terms of USER_PGD_PTRS. The definition of USER_PGD_PTRS doesn't really make much sense on x86-64, since it can have two different user address-space configurations. I renamed USER_PGD_PTRS to KERNEL_PGD_BOUNDARY, which is meaningful for all of 32/32, 32/64 and 64/64 process configurations. - USER_PTRS_PER_PGD was also defined and was being used for similar purposes. Converting its users to KERNEL_PGD_BOUNDARY left it completely unused, and so I removed it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Andi Kleen <ak@suse.de> Cc: Zach Amsden <zach@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/reboot.c')
-rw-r--r--arch/x86/kernel/reboot.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 19c9386ac118..1791a751a772 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -8,6 +8,7 @@
#include <asm/apic.h>
#include <asm/desc.h>
#include <asm/hpet.h>
+#include <asm/pgtable.h>
#include <asm/reboot_fixups.h>
#include <asm/reboot.h>
@@ -15,7 +16,6 @@
# include <linux/dmi.h>
# include <linux/ctype.h>
# include <linux/mc146818rtc.h>
-# include <asm/pgtable.h>
#else
# include <asm/iommu.h>
#endif
@@ -275,7 +275,7 @@ void machine_real_restart(unsigned char *code, int length)
/* Remap the kernel at virtual address zero, as well as offset zero
from the kernel segment. This assumes the kernel segment starts at
virtual address PAGE_OFFSET. */
- memcpy(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
+ memcpy(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY,
sizeof(swapper_pg_dir [0]) * KERNEL_PGD_PTRS);
/*