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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>		19 years ago
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acpi	…
cpufreq	…
Makefile	…
aperture.c	…
apic.c	…
asm-offsets.c	…
crash.c	…
e820.c	…
early_printk.c	…
entry.S	…
genapic.c	…
genapic_cluster.c	…
genapic_flat.c	…
head.S	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
head64.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
i387.c	…
i8259.c	…
init_task.c	…
io_apic.c	…
ioport.c	…
irq.c	…
kprobes.c	…
ldt.c	…
machine_kexec.c	…
mce.c	…
mce_amd.c	…
mce_intel.c	…
module.c	…
mpparse.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
nmi.c	…
pci-dma.c	…
pci-gart.c	…
pci-nommu.c	…
pmtimer.c	…
process.c	…
ptrace.c	…
reboot.c	…
relocate_kernel.S	…
setup.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
setup64.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
signal.c	…
smp.c	…
smpboot.c	[PATCH] x86_64: Unmap NULL during early bootup	19 years ago
suspend.c	…
suspend_asm.S	…
sys_x86_64.c	…
syscall.c	…
time.c	…
trampoline.S	…
traps.c	…
vmlinux.lds.S	…
vsyscall.c	…
x8664_ksyms.c	…