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d2105b10fe
kernel_optimize_test/include/asm-x86_64
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Jon Mason d2105b10fe [PATCH] x86_64: Calgary IOMMU - Multi-Node NULL pointer dereference fix 
Calgary hits a NULL pointer dereference when booting in a multi-chassis
NUMA system.  See Redhat bugzilla number 198498, found by Konrad
Rzeszutek (konradr@redhat.com).

There are many issues that had to be resolved to fix this problem.
Firstly when I originally wrote the code to handle NUMA systems, I
had a large misunderstanding that was not corrected until now.  That was
that I thought the "number of nodes online" referred to number of
physical systems connected.  So that if NUMA was disabled, there
would only be 1 node and it would only show that node's PCI bus.
In reality if NUMA is disabled, the system displays all of the
connected chassis as one node but is only ignorant of the delays
in accessing main memory.  Therefore, references to num_online_nodes()
and MAX_NUMNODES are incorrect and need to be set to the maximum
number of nodes that can be accessed (which are 8).  I created a
variable, MAX_NUM_CHASSIS, and set it to 8 to fix this.

Secondly, when walking the PCI in detect_calgary, the code only
checked the first "slot" when looking to see if a device is present.
This will work for most cases, but unfortunately it isn't always the
case.  In the NUMA MXE drawers, there are USB devices present on the
3rd slot (with slot 1 being empty).  So, to work around this, all
slots (up to 8) are scanned to see if there are any devices present.

Lastly, the bus is being enumerated on large systems in a different
way the we originally thought.  This throws the ugly logic we had
out the window.  To more elegantly handle this, I reorganized the
kva array to be sparse (which removed the need to have any bus number
to kva slot logic in tce.c) and created a secondary space array to
contain the bus number to phb mapping.

With these changes Calgary boots on an x460 with 4 nodes with and
without NUMA enabled.

Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-29 20:59:55 -07:00
..
8253pit.h
a.out.h
acpi.h Revert "[PATCH] x86_64: Only do the clustered systems have unsynchronized TSC assumption on IBM systems" 2006-02-27 20:41:56 -08:00
agp.h
alternative.h [PATCH] SMP alternatives: skip with UP kernels 2006-07-01 09:56:02 -07:00
apic.h [PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle 2006-06-26 10:48:21 -07:00
apicdef.h x86_64: Remove stale lapic definition from apicdef.h 2006-04-01 22:50:03 -05:00
atomic.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
auxvec.h
bitops.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
boot.h
bootsetup.h
bug.h
bugs.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
byteorder.h
cache.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
cacheflush.h [PATCH] x86/x86_64: mark rodata section read-only: x86-64 support 2006-01-06 08:33:36 -08:00
calgary.h [PATCH] x86_64: Calgary IOMMU - Multi-Node NULL pointer dereference fix 2006-07-29 20:59:55 -07:00
calling.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
checksum.h
compat.h [PATCH] amd64: task_pt_regs() 2006-01-12 09:08:51 -08:00
cpu.h
cpufeature.h [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs 2006-06-26 10:48:22 -07:00
cputime.h
current.h
debugreg.h
delay.h
desc.h [PATCH] x86_64: Align and pad x86_64 GDT on page boundary 2006-01-11 19:04:53 -08:00
div64.h
dma-mapping.h [PATCH] x86_64: Calgary IOMMU - move valid_dma_direction into the callers 2006-06-26 10:48:18 -07:00
dma.h [PATCH] x86_64: Remove long obsolete CVS 2006-06-26 10:48:16 -07:00
dmi.h [PATCH] x86_64: Implement early DMI scanning 2006-03-25 09:10:55 -08:00
dwarf2.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
e820.h [PATCH] x86_64: Avoid EBDA area in early boot allocator 2006-05-08 09:34:56 -07:00
edac.h [PATCH] EDAC: core EDAC support code 2006-01-18 19:20:31 -08:00
elf.h [PATCH] x86_64: Fix stack/mmap randomization for compat tasks 2006-05-30 20:31:05 -07:00
emergency-restart.h
errno.h
fcntl.h
fixmap.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
floppy.h [PATCH] irq-flags: x86_64: Use the new IRQF_ constants 2006-07-02 13:58:49 -07:00
fpu32.h
futex.h [PATCH] lightweight robust futexes updates 2006-03-27 08:44:49 -08:00
genapic.h
hardirq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
hpet.h [PATCH] x86_64: Rename oem_force_hpet_timer to apic_is_clustered_box 2006-06-26 10:48:19 -07:00
hw_irq.h [PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend() 2006-06-29 10:26:23 -07:00
i387.h [PATCH] i386/x86-64: Fix x87 information leak between processes 2006-04-20 07:58:11 -07:00
ia32_unistd.h [PATCH] x86_64: Remove most of ia32_unistd.h 2006-06-26 10:48:15 -07:00
ia32.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
ide.h
idle.h [PATCH] x86_64: Add idle notifiers 2006-01-11 19:04:55 -08:00
intel_arch_perfmon.h [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs 2006-06-26 10:48:22 -07:00
io_apic.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-05-24 09:22:21 +01:00
io.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h
ipcbuf.h
ipi.h [PATCH] x86_64: Remove useless KDB vector 2006-01-11 19:05:00 -08:00
irq.h [PATCH] x86_64: Increase NR_IRQ_VECTORS to 32 * NR_CPUS 2006-01-16 11:27:59 -08:00
irqflags.h [PATCH] lockdep: irqtrace cleanup of include/asm-x86_64/irqflags.h 2006-07-03 15:27:03 -07:00
k8.h [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
Kbuild Add Kbuild file for x86_64 'make headers_install' 2006-06-18 12:19:11 +01:00
kdebug.h [PATCH] lockdep: beautify x86_64 stacktraces 2006-07-03 15:27:02 -07:00
kexec.h [PATCH] Compilation of kexec/kdump broken 2006-02-03 08:32:09 -08:00
kmap_types.h
kprobes.h [PATCH] Notify page fault call chain 2006-06-26 09:58:22 -07:00
ldt.h
linkage.h
local.h [PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels 2006-06-26 10:48:21 -07:00
mach_apic.h
mc146818rtc.h
mce.h [PATCH] x86_64: mce_amd support for family 0x10 processors 2006-06-26 10:48:20 -07:00
mman.h [PATCH] add asm-generic/mman.h 2006-02-15 15:32:22 -08:00
mmsegment.h
mmu_context.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
mmu.h
mmx.h
mmzone.h [PATCH] Delete unused definitions of kvaddr_to_nid 2006-06-23 07:42:52 -07:00
module.h
mpspec.h Pull pnpacpi into acpica branch 2006-01-07 03:50:18 -05:00
msgbuf.h
msi.h [PATCH] PCI: cleanup unused variable about msi driver 2006-06-21 12:00:00 -07:00
msr.h [PATCH] Fix x86_64/msr.h interface to agree with i386/msr.h 2005-11-20 11:52:59 -08:00
mtrr.h Move inclusion of <linux/compat.h> out of user scope in asm-x86_64/mtrr.h 2006-05-21 22:51:13 +01:00
mutex.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
namei.h
nmi.h [PATCH] x86_64: nmi watchdog header cleanup 2006-06-26 10:48:16 -07:00
node.h
numa.h [PATCH] Unify pxm_to_node() and node_to_pxm() 2006-06-23 07:42:48 -07:00
page.h [PATCH] x86_64: Enlarge debug stack for nested kprobes 2006-07-28 19:28:00 -07:00
param.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
parport.h
pci-direct.h
pci.h [PATCH] x86_64: Calgary IOMMU - Calgary specific bits 2006-06-26 10:48:19 -07:00
pda.h [PATCH] x86_64: Reorder one field of the PDA to reduce padding 2006-03-25 09:10:56 -08:00
percpu.h [PATCH] lockdep: add per_cpu_offset() 2006-07-03 15:27:00 -07:00
pgalloc.h [PATCH] x86_64: actively synchronize vmalloc area when registering certain callbacks 2006-03-25 09:10:53 -08:00
pgtable.h [PATCH] x86_64: Get rid of pud_offset_k / __pud_offset_k 2006-06-26 10:48:18 -07:00
poll.h [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
posix_types.h
prctl.h
processor.h [PATCH] x86_64: moving phys_proc_id and cpu_core_id to cpuinfo_x86 2006-06-26 10:48:19 -07:00
proto.h [PATCH] x86_64: Calgary IOMMU - IOMMU abstractions 2006-06-26 10:48:18 -07:00
ptrace.h
resource.h
rtc.h
rwlock.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
scatterlist.h
seccomp.h
sections.h
segment.h [PATCH] x86_64: Remove unused segments 2006-01-11 19:05:01 -08:00
semaphore.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
sembuf.h
serial.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
setup.h
shmbuf.h
shmparam.h
sigcontext32.h
sigcontext.h
siginfo.h
signal.h [PATCH] irq-flags: x86_64: Use the new IRQF_ constants 2006-07-02 13:58:49 -07:00
smp.h [PATCH] x86_64: moving phys_proc_id and cpu_core_id to cpuinfo_x86 2006-06-26 10:48:19 -07:00
socket.h [AF_UNIX]: Datagram getpeersec 2006-06-29 16:58:06 -07:00
sockios.h
sparsemem.h
spinlock_types.h
spinlock.h [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
stat.h
statfs.h
string.h [PATCH] x86_64: Use __always_inline for __inline_memcpy 2006-06-26 10:48:14 -07:00
suspend.h [PATCH] x86_64: eliminate set_debug() 2006-03-25 09:10:52 -08:00
swiotlb.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
system.h [PATCH] remove set_wmb - arch removal 2006-07-14 21:56:14 -07:00
tce.h [PATCH] x86_64: Fix Calgary copyright statements per IBM guidelines 2006-07-10 15:12:33 -07:00
termbits.h
termios.h
thread_info.h [PATCH] x86_64: x86_64 stack usage debugging 2006-06-26 10:48:22 -07:00
timex.h [PATCH] x86_64: fix sync before RDTSC on Intel cpus 2006-04-11 06:38:57 -07:00
tlb.h
tlbflush.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
topology.h [PATCH] sched: mc/smt power savings sched policy 2006-06-27 17:32:45 -07:00
types.h
uaccess.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
ucontext.h
unaligned.h
unistd.h [PATCH] sys_move_pages: x86_64 support 2006-06-23 07:42:53 -07:00
unwind.h [PATCH] i386/x86-64: fall back to old-style call trace if no unwinding 2006-06-26 10:48:18 -07:00
user32.h
user.h
vga.h [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
vsyscall32.h
vsyscall.h [PATCH] x86_64: sparse warning cleanups 2006-01-11 19:05:02 -08:00
xor.h