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linux/arch/x86_64/kernel
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Jan Beulich 8c914cb704 [PATCH] x86_64: actively synchronize vmalloc area when registering certain callbacks 
While the modular aspect of the respective i386 patch doesn't apply to
x86-64 (as the top level page directory entry is shared between modules
and the base kernel), handlers registered with register_die_notifier()
are still under similar constraints for touching ioremap()ed or
vmalloc()ed memory. The likelihood of this problem becoming visible is
of course significantly lower, as the assigned virtual addresses would
have to cross a 2**39 byte boundary. This is because the callback gets
invoked
(a) in the page fault path before the top level page table propagation
gets carried out (hence a fault to propagate the top level page table
entry/entries mapping to module's code/data would nest infinitly) and
(b) in the NMI path, where nested faults must absolutely not happen,
since otherwise the IRET from the nested fault re-enables NMIs,
potentially resulting in nested NMI occurences.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:53 -08:00
..
acpi [ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once 2005-12-01 01:30:35 -05:00
cpufreq Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
aperture.c [PATCH] x86_64: no_iommu removal in pci-gart.c 2006-02-26 09:53:29 -08:00
apic.c Revert "[PATCH] x86_64: Only do the clustered systems have unsynchronized TSC assumption on IBM systems" 2006-02-27 20:41:56 -08:00
asm-offsets.c [PATCH] x86_64: Allow nesting of int3 by default for kprobes 2006-01-16 11:27:58 -08:00
crash.c [PATCH] kdump: x86_64 save cpu registers upon crash 2006-01-10 08:01:28 -08:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
e820.c [PATCH] kdump: x86_64: add memmmap command line option 2006-01-10 08:01:27 -08:00
early_printk.c [PATCH] early_printk: cleanup trailiing whitespace 2006-03-24 07:33:25 -08:00
entry.S Revert "[PATCH] x86-64: Fix up handling of non canonical user RIPs" 2006-03-14 08:01:47 -08:00
genapic.c [PATCH] x86-64: Use physflat on Intel for < 8 CPUs with CPU hotplug 2005-09-12 10:50:56 -07:00
genapic_cluster.c [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI 2006-01-11 19:01:57 -08:00
genapic_flat.c [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI 2006-01-11 19:01:57 -08:00
head.S [PATCH] x86_64: Resolve the RIP of an early exception using kallsyms 2006-02-17 08:00:40 -08:00
head64.c [PATCH] i386/x86-64: make setup_early_printk() usage consistent 2006-01-11 19:05:04 -08:00
i387.c [PATCH] amd64: task_thread_info() 2006-01-12 09:08:51 -08:00
i8259.c [PATCH] amd64: task_thread_info() 2006-01-12 09:08:51 -08:00
init_task.c [PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros 2006-01-08 20:13:38 -08:00
io_apic.c [PATCH] x86_64: Better ATI timer fix 2006-02-26 09:53:31 -08:00
ioport.c [PATCH] capable/capability.h (arch/) 2006-01-11 18:42:14 -08:00
irq.c [PATCH] more for_each_cpu() conversions 2006-03-23 07:38:17 -08:00
kprobes.c [PATCH] sem2mutex: kprobes 2006-03-23 07:38:12 -08:00
ldt.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
machine_kexec.c [PATCH] fix kexec asm 2006-03-08 14:15:04 -08:00
Makefile [PATCH] x86-64: react to new topology.c location 2006-02-25 11:12:15 -08:00
mce.c [PATCH] x86_64: {set,clear,test}_bit() related cleanup and pci_mmcfg_init() fix 2006-03-24 07:33:15 -08:00
mce_amd.c [PATCH] x86_64: Sparse warnings fix. 2006-01-11 19:05:00 -08:00
mce_intel.c [PATCH] x86_64: Some housekeeping in local APIC code 2006-01-11 19:05:03 -08:00
module.c [PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support 2005-05-05 16:36:33 -07:00
mpparse.c [PATCH] x86_64: cleanup allocating logical cpu numbers in x86_64 2006-03-25 09:10:53 -08:00
nmi.c [PATCH] x86_64: actively synchronize vmalloc area when registering certain callbacks 2006-03-25 09:10:53 -08:00
pci-dma.c [PATCH] x86_64: Fix swiotlb dma_alloc_coherent fallback 2006-02-04 16:43:13 -08:00
pci-gart.c [PATCH] x86_64: Use cpu_relax in poll loop in GART IOMMU 2006-03-25 09:10:53 -08:00
pci-nommu.c [PATCH] x86_64: IOMMU printk cleanup 2006-02-04 16:43:15 -08:00
pci-swiotlb.c [PATCH] x86_64: IOMMU printk cleanup 2006-02-04 16:43:15 -08:00
pmtimer.c [PATCH] x86_64: Calibrate APIC timer using PM timer 2006-02-04 16:43:15 -08:00
process.c [PATCH] x86_64: save FPU context slightly later 2006-03-25 09:10:52 -08:00
ptrace.c [PATCH] x86_64: disallow multi-byte hardware execution breakpoints 2006-03-25 09:10:52 -08:00
reboot.c [PATCH] i386/x86-64: Don't IPI to offline cpus on shutdown 2006-01-11 19:04:50 -08:00
relocate_kernel.S [PATCH] kexec: x86_64 kexec implementation 2005-06-25 16:24:50 -07:00
setup.c [PATCH] x86_64: Report local APIC ID when initializing CPU 2006-03-25 09:10:53 -08:00
setup64.c [PATCH] x86_64: eliminate set_debug() 2006-03-25 09:10:52 -08:00
signal.c [PATCH] swsusp: finally solve mysqld problem 2006-03-23 07:38:08 -08:00
smp.c [PATCH] x86_64: Remove useless KDB vector 2006-01-11 19:05:00 -08:00
smpboot.c [PATCH] x86_64: Move the SMP time selection earlier 2006-02-26 09:53:31 -08:00
suspend.c [PATCH] x86_64: Align and pad x86_64 GDT on page boundary 2006-01-11 19:04:53 -08:00
suspend_asm.S [PATCH] x86_64: Set up safe page tables during resume 2005-10-10 08:36:46 -07:00
sys_x86_64.c [PATCH] x86_64: Use common sys_time64 2005-11-14 19:55:17 -08:00
syscall.c [PATCH] x86/x86_64: mark rodata section read-only: make some datastructures const 2006-01-06 08:33:36 -08:00
time.c [PATCH] x86_64: Don't need to read PIT in timer handler when PM timer is used 2006-03-25 09:10:53 -08:00
trampoline.S [PATCH] x86_64: Fix SMP bootup with CONFIG_KDUMP enabled 2006-01-11 19:09:58 -08:00
traps.c [PATCH] x86_64: actively synchronize vmalloc area when registering certain callbacks 2006-03-25 09:10:53 -08:00
vmlinux.lds.S [PATCH] x86_64: Let impossible CPUs point to reference per cpu data 2006-02-04 16:43:15 -08:00
vsmp.c [PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_arch 2006-01-11 19:05:01 -08:00
vsyscall.c [PATCH] x86_64: Use standard __always_inline in vsyscall.c 2006-01-11 19:04:58 -08:00
x8664_ksyms.c [PATCH] multiple exports of strpbrk 2006-03-22 07:53:56 -08:00