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Siddha, Suresh B f6c2e3330d [PATCH] x86_64: Unmap NULL during early bootup 
We should zap the low mappings, as soon as possible, so that we can catch
kernel bugs more effectively. Previously early boot had NULL mapped
and didn't trap on NULL references.

This patch introduces boot_level4_pgt, which will always have low identity
addresses mapped.  Druing boot, all the processors will use this as their
level4 pgt.  On BP, we will switch to init_level4_pgt as soon as we enter C
code and zap the low mappings as soon as we are done with the usage of
identity low mapped addresses.  On AP's we will zap the low mappings as
soon as we jump to C code.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:14 -08:00
..
acpi [ACPI] ACPICA 20050902 2005-09-03 00:15:11 -04:00
asm-alpha [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-arm [PATCH] ARM: Reverted 2918/1: [update] Base port of Comdial MP1000 platfrom 2005-11-04 17:28:34 +00:00
asm-arm26 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-cris [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-frv [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-generic [PATCH] mm: update comments to pte lock 2005-10-29 21:40:42 -07:00
asm-h8300 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-i386 Revert "i386: move apic init in init_IRQs" 2005-10-31 19:16:17 -08:00
asm-ia64 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-m32r [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-m68k [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-m68knommu [PATCH] m68knommu: add 5208 ColdFire reset/reboot support 2005-11-01 21:41:20 -08:00
asm-mips [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-parisc [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-powerpc powerpc: Merge smp.c and smp.h 2005-11-05 10:33:55 +11:00
asm-ppc Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-04 16:27:50 -08:00
asm-ppc64 powerpc: Merge smp.c and smp.h 2005-11-05 10:33:55 +11:00
asm-s390 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-sh [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-sh64 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-sparc [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-sparc64 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-um [PATCH] uml: remove old UM_FASTCALL, and make the thing work again 2005-10-30 17:37:16 -08:00
asm-v850 [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
asm-x86_64 [PATCH] x86_64: Unmap NULL during early bootup 2005-11-14 19:55:14 -08:00
asm-xtensa [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
keys [PATCH] Keys: Export user-defined keyring operations 2005-10-30 17:37:22 -08:00
linux [PATCH] x86_64: Speed up numa_node_id by putting it directly into the PDA 2005-11-14 19:55:14 -08:00
math-emu
media [PATCH] i2c: ID redefinition cleanups 2005-10-28 14:02:13 -07:00
mtd
net Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2005-10-29 11:25:16 -07:00
pcmcia [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
rdma [IB] ucm: 32/64 compatibility fixes 2005-11-01 13:18:54 -08:00
rxrpc [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
scsi Merge branch 'srp' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2005-11-04 16:32:36 -08:00
sound [PATCH] Creative Audigy 2 cardbus: Add IO window wakeup magic 2005-10-31 16:09:39 -08:00
video [PATCH] drivers/video: Replace custom macro with isdigit() 2005-09-13 08:22:33 -07:00