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linux/arch/i386
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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
..
boot [PATCH] fbdev: Resurrect hooks to get EDID from firmware 2005-09-09 13:57:59 -07:00
crypto [PATCH] arch/i386/crypto/aes.c: fix sparse warnings 2005-06-25 16:24:59 -07:00
kernel [PATCH] x86_64: Unmap NULL during early bootup 2005-11-14 19:55:14 -08:00
lib [LIB]: Consolidate _atomic_dec_and_lock() 2005-09-14 21:47:01 -07:00
mach-default [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
mach-es7000 [PATCH] ES7000 platform update 2005-10-30 17:37:12 -08:00
mach-generic [PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs 2005-09-05 00:06:10 -07:00
mach-visws [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
mach-voyager [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
math-emu [PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management 2005-09-05 00:06:11 -07:00
mm [PATCH] x86: add an accessor function for getting the per-CPU gdt 2005-10-30 17:37:12 -08:00
oprofile [PATCH] mm: kill check_user_page_readable 2005-10-29 21:40:41 -07:00
pci [PATCH] toshiba_ohci1394_dmi_table should be __devinitdata, not __devinit 2005-11-01 21:27:22 -08:00
power [PATCH] FPU context corrupted after resume 2005-10-30 17:37:11 -08:00
defconfig [ACPI] delete CONFIG_ACPI_PCI 2005-08-25 12:40:44 -04:00
Kconfig [PATCH] i386: CONFIG_PC removal 2005-10-31 09:20:54 -08:00
Kconfig.cpu [PATCH] uml: reuse i386 cpu-specific tuning 2005-10-30 17:37:16 -08:00
Kconfig.debug [PATCH] i386: add missing Kconfig help text 2005-07-27 16:25:58 -07:00
Makefile [PATCH] uml: reuse i386 cpu-specific tuning 2005-10-30 17:37:16 -08:00
Makefile.cpu [PATCH] i386: use -mcpu, not -mtune, for GCCs older than 3.4 2005-10-30 17:37:16 -08:00