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Tim Hockin bd78432c8f x86_64: mcelog tolerant level cleanup 
Background:
 The MCE handler has several paths that it can take, depending on various
 conditions of the MCE status and the value of the 'tolerant' knob.  The
 exact semantics are not well defined and the code is a bit twisty.

Description:
 This patch makes the MCE handler's behavior more clear by documenting the
 behavior for various 'tolerant' levels.  It also fixes or enhances
 several small things in the handler.  Specifically:
     * If RIPV is set it is not safe to restart, so set the 'no way out'
       flag rather than the 'kill it' flag.
     * Don't panic() on correctable MCEs.
     * If the _OVER bit is set *and* the _UC bit is set (meaning possibly
       dropped uncorrected errors), set the 'no way out' flag.
     * Use EIPV for testing whether an app can be killed (SIGBUS) rather
       than RIPV.  According to docs, EIPV indicates that the error is
       related to the IP, while RIPV simply means the IP is valid to
       restart from.
     * Don't clear the MCi_STATUS registers until after the panic() path.
       This leaves the status bits set after the panic() so clever BIOSes
       can find them (and dumb BIOSes can do nothing).

 This patch also calls nonseekable_open() in mce_open (as suggested by akpm).

Result:
 Tolerant levels behave almost identically to how they always have, but
 not it's well defined.  There's a slightly higher chance of panic()ing
 when multiple errors happen (a good thing, IMHO).  If you take an MBE and
 panic(), the error status bits are not cleared.

Alternatives:
 None.

Testing:
 I used software to inject correctable and uncorrectable errors.  With
 tolerant = 3, the system usually survives.  With tolerant = 2, the system
 usually panic()s (PCC) but not always.  With tolerant = 1, the system
 always panic()s.  When the system panic()s, the BIOS is able to detect
 that the cause of death was an MC4.  I was not able to reproduce the
 case of a non-PCC error in userspace, with EIPV, with (tolerant < 3).
 That will be rare at best.

Signed-off-by: Tim Hockin <thockin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-07-21 18:37:10 -07:00
..
ABI USB: add power/persist device attribute 2007-07-12 16:34:30 -07:00
DocBook docbook: don't reference file without kernel-doc 2007-07-19 10:04:45 -07:00
RCU Document the fact that RCU callbacks can run in parallel 2007-07-16 09:05:47 -07:00
accounting taskstats: add context-switch counters 2007-07-16 09:05:46 -07:00
aoe Fix typos in Documentation/: 'D'-'E' 2006-10-03 22:47:42 +02:00
arm documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
auxdisplay documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
blackfin Blackfin arch: kgdb specific code 2007-06-29 16:35:17 +08:00
block Documentation/block/barrier.txt is not in sync with the actual code: - blk_queue_ordered() no longer has a gfp_mask parameter - blk_queue_ordered_locked() no longer exists - sd_prepare_flush() looks slightly different 2007-07-10 13:43:34 +02:00
cdrom remove the documentation for the legacy CDROM drivers 2007-07-16 14:39:04 +02:00
connector some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
console Typo: fro -> from 2007-07-19 10:04:47 -07:00
cpu-freq misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
cris Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
crypto documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
device-mapper dm: delay target 2007-05-09 12:30:47 -07:00
driver-model Documentation fix devres.txt: lib/iomap.c -> lib/devres.c 2007-07-18 15:49:49 -07:00
drivers/edac drivers/edac: add to edac docs 2007-07-19 10:04:57 -07:00
dvb V4L/DVB (5829): Firmware extract and loading for opera dvb-usb update 2007-07-18 14:24:41 -03:00
early-userspace earlyuserspace/README: fix homonym err 2005-11-08 17:16:50 +01:00
fault-injection fault-injection: fix example scripts in documentation 2007-07-16 09:05:45 -07:00
fb Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-05-09 12:54:17 -07:00
filesystems some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
firmware_class sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
fujitsu/frv misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
hrtimer Add a flag to indicate deferrable timers in /proc/timer_stats 2007-07-16 09:05:45 -07:00
hrtimers [PATCH] hrtimers: move and add documentation 2007-02-16 08:13:58 -08:00
hwmon hwmon/w83627ehf: Add support for the VID inputs 2007-07-19 14:22:17 -04:00
i2c i2c-rpx: Remove 2007-07-12 14:12:32 +02:00
i2o documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
i386 Define zero-page offset 0x1e4 as a scratch field, and use it 2007-07-12 10:55:54 -07:00
ia64 [IA64] prevent MCA when performing MMIO mmap to PCI config space 2007-07-11 11:34:49 -07:00
infiniband IB/umad: Clarify documentation of transaction ID 2007-04-24 21:30:38 -07:00
input misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
ioctl [PATCH] Document how to decode an IOCTL number 2006-12-10 09:55:40 -08:00
isdn documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
ja_JP Documentation: add Japanese translated stable_api_nonsense.txt 2007-07-18 16:02:12 -07:00
kbuild kbuild: document cc-fullversion 2007-07-16 21:15:48 +02:00
kdump [PATCH] PPC64 Kdump documentation update 2007-02-20 17:10:15 -08:00
lguest lguest: the documentation, example launcher 2007-07-19 10:04:53 -07:00
m68k more ACSI removal 2007-07-16 15:02:47 +02:00
mips [MIPS] Delete Documentation/mips/pci/pci.README 2007-05-11 14:28:30 +01:00
netlabel Fix occurrences of "the the " 2007-05-09 08:57:56 +02:00
networking more ACSI removal 2007-07-16 15:02:47 +02:00
parisc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pcmcia add new_id to PCMCIA drivers 2007-05-07 12:12:50 -07:00
power Documentation:reference notifiers.txt in freezing-of-tasks.txt 2007-07-21 17:49:16 -07:00
powerpc Add phy-connection-type to gianfar nodes 2007-07-18 18:29:37 -04:00
s390 [S390] cio: Update documentation. 2007-05-21 11:25:27 +02:00
scsi [SCSI] aacraid: add 51245, 51645 and 52245 adapters to documentation. 2007-07-14 19:09:28 -05:00
serial [SERIAL] Update parity handling documentation 2006-06-02 17:47:26 +01:00
sh sh: SH7722 clock framework support. 2007-05-07 02:11:56 +00:00
sound [ALSA] hda-intel: support for iMac 24'' released on 09/2006 2007-07-20 11:12:00 +02:00
sparc Fix typos in Documentation/: 'Q'-'R' 2006-10-03 22:54:15 +02:00
spi spi_lm70llp parport adapter driver 2007-07-17 10:23:04 -07:00
sysctl handle kernelcore=: generic 2007-07-17 10:22:59 -07:00
telephony Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uml Fix typos in /Documentation : 'U-Z' 2006-11-30 04:58:40 +01:00
usb USB: usb/dma doc updates 2007-07-12 16:34:42 -07:00
video4linux V4L/DVB (5803): Bttv: add support for DViCO FusionHDTV 2 2007-07-18 14:24:26 -03:00
vm SLUB: change error reporting format to follow lockdep loosely 2007-07-17 10:23:01 -07:00
w1 [PATCH] w1: Userspace communication protocol over connector. 2006-06-22 11:22:50 -07:00
watchdog [WATCHDOG] clean-up watchdog documentation 2007-05-24 17:26:11 +00:00
x86_64 x86_64: mcelog tolerant level cleanup 2007-07-21 18:37:10 -07:00
zh_CN zh_CN/HOWTO: update URLs of git trees 2007-07-18 16:02:12 -07:00
00-INDEX Add missing files and dirs to 00-INDEX in Documentation/ 2007-07-16 09:05:51 -07:00
BUG-HUNTING Documentation: How to use GDB to decode OOPSes 2007-06-01 08:18:28 -07:00
Changes Fix typos in doc and comments 2006-11-30 05:32:19 +01:00
CodingStyle dev_vdbg() documentation 2007-07-18 15:49:50 -07:00
DMA-API.txt [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
DMA-ISA-LPC.txt Fix typos in /Documentation : 'T'' 2006-11-30 04:55:36 +01:00
DMA-mapping.txt PCI: remove pci_dac_dma_... APIs 2007-07-11 16:02:11 -07:00
HOWTO HOWTO: Add the knwon_regression URI to the documentation 2007-07-18 15:49:50 -07:00
IO-mapping.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
IPMI.txt [PATCH] IPMI: system interface hotplug 2006-12-07 08:39:47 -08:00
IRQ-affinity.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
IRQ.txt [PATCH] genirq: irq: document what an IRQ is 2006-06-29 10:26:25 -07:00
MSI-HOWTO.txt misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
ManagementStyle Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
PCIEBUS-HOWTO.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
README.DAC960 [PATCH] devfs: Last little devfs cleanups throughout the kernel tree. 2006-06-26 12:25:09 -07:00
README.cycladesZ Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SAK.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SM501.txt SM501: Add Documentation/SM501.txt 2007-06-24 08:59:11 -07:00
SecurityBugs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
SubmitChecklist SubmitChecklist update, fix spelling error 2007-07-16 09:05:46 -07:00
SubmittingDrivers Documentation: Ask driver writers to provide PM support 2007-05-08 11:14:59 -07:00
SubmittingPatches update checkpatch.pl to version 0.07 2007-07-16 09:05:34 -07:00
VGA-softcursor.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
applying-patches.txt [PATCH] Docs update: typos, corrections and additions to applying-patches.txt 2006-01-10 08:01:54 -08:00
atomic_ops.txt Documentation/atomic_ops.txt typo fix 2007-06-08 17:23:33 -07:00
basic_profiling.txt [PATCH] oprofile: report anonymous region samples 2005-06-24 00:06:27 -07:00
binfmt_misc.txt documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
cachetlb.txt [POWERPC] unmap_vm_area becomes unmap_kernel_range for the public 2007-06-14 22:29:56 +10:00
cciss.txt Documentation: cciss: detecting failed drives 2007-05-08 11:15:10 -07:00
cli-sti-removal.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
computone.txt remove mentionings of devfs in documentation 2006-10-03 22:17:48 +02:00
cpqarray.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-hotplug.txt Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
cpu-load.txt [PATCH] Documentation: CPU load calculation description 2007-03-01 14:53:39 -08:00
cpusets.txt [PATCH] CPUSETS: add mems to basic usage documentation 2007-04-02 10:06:08 -07:00
cputopology.txt Fix typos in Documentation/: 'D'-'E' 2006-10-03 22:47:42 +02:00
dcdbas.txt [PATCH] dcdbas: add Dell Systems Management Base Driver with sysfs support 2005-09-07 16:57:27 -07:00
debugging-modules.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dell_rbu.txt Fix typos in Documentation/: 'N'-'P' 2006-10-03 22:52:05 +02:00
devices.txt [PATCH] New updated devices.txt - LANANA 2006-12-07 08:39:45 -08:00
digiepca.txt typo fixes: aquire -> acquire 2006-06-30 18:23:04 +02:00
dnotify.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dontdiff update dontdiff file 2007-05-23 20:14:14 -07:00
eisa.txt Fix typos in /Documentation : 'U-Z' 2006-11-30 04:58:40 +01:00
exception.txt Documentation: remove duplicated words 2006-10-03 22:57:56 +02:00
feature-removal-schedule.txt Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6 2007-07-19 14:24:57 -07:00
floppy.txt [PATCH] kernel Doc/ URL corrections 2005-11-22 09:14:30 -08:00
gpio.txt gpio calls don't need i/o barriers 2007-07-19 10:04:43 -07:00
hayes-esp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
highuid.txt Fix "can not" in Documentation and Kconfig 2006-10-03 22:53:09 +02:00
hpet.txt Documentation/hpet.txt typo 2006-01-15 02:09:54 +01:00
hw_random.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.txt ide: make legacy IDE VLB modules check for the "probe" kernel params (v2) 2007-03-03 17:48:55 +01:00
initrd.txt documentation: Documentation/initrd.txt 2007-05-23 20:14:14 -07:00
io_ordering.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl-number.txt Remove the last few UMSDOS leftovers 2007-07-16 09:05:51 -07:00
iostats.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irqflags-tracing.txt [PATCH] lockdep: irqtrace subsystem, docs 2006-07-03 15:27:03 -07:00
isapnp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
java.txt documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
kernel-doc-nano-HOWTO.txt [PATCH] Discuss a couple common errors in kernel-doc usage. 2007-02-11 10:51:32 -08:00
kernel-docs.txt documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
kernel-parameters.txt x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu 2007-07-21 18:37:08 -07:00
keys-request-key.txt [PATCH] Keys: Allow in-kernel key requestor to pass auxiliary data to upcaller 2006-06-29 10:26:20 -07:00
keys.txt [AF_RXRPC]: Key facility changes for AF_RXRPC 2007-04-26 15:46:23 -07:00
kobject.txt Fix typos in Documentation/: 'D'-'E' 2006-10-03 22:47:42 +02:00
kprobes.txt jprobes: remove JPROBE_ENTRY() 2007-07-19 10:04:44 -07:00
kref.txt Fix wrong identifier name in Documentation/kref.txt 2007-05-11 19:07:14 +02:00
laptop-mode.txt laptop-mode URL update 2007-05-08 11:15:14 -07:00
ldm.txt LDM: Fix for Windows Vista dynamic disks 2007-05-21 09:58:40 -07:00
leds-class.txt [PATCH] LED: class documentation 2006-03-31 12:18:56 -08:00
local_ops.txt [PATCH] local_t: Documentation 2007-02-11 10:51:32 -08:00
lockdep-design.txt [PATCH] fix lockdep-design.txt 2006-10-11 11:14:24 -07:00
locks.txt [PATCH] Docs update: remove obsolete patch from locks.txt 2006-01-10 08:01:54 -08:00
logo.gif Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
logo.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
magic-number.txt Magic number prefix consistency change to Documentation/magic-number.txt 2007-05-09 08:58:18 +02:00
mandatory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mca.txt Fix some typos in Documentation/: 'A' 2006-10-03 22:45:33 +02:00
md.txt md: allow reshape_position for md arrays to be set via sysfs 2007-05-09 12:30:57 -07:00
memory-barriers.txt Documentation/memory-barriers.txt: various fixes 2007-05-23 20:14:15 -07:00
memory.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mono.txt Fix "can not" in Documentation and Kconfig 2006-10-03 22:53:09 +02:00
moxa-smartio Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mtrr.txt [PATCH] Doc: fix mtrr userspace programs to build cleanly 2006-04-11 06:18:44 -07:00
mutex-design.txt [PATCH] mutex subsystem, documentation 2006-01-09 15:59:20 -08:00
nbd.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nfsroot.txt [PATCH] fix the defaults mentioned in Documentation/nfsroot.txt 2007-02-12 09:48:28 -08:00
nmi_watchdog.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nommu-mmap.txt [PATCH] NOMMU: Make futexes work under NOMMU conditions 2006-09-27 08:26:15 -07:00
numastat.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
oops-tracing.txt Report that kernel is tainted if there was an OOPS 2007-07-17 10:23:02 -07:00
paride.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport-lowlevel.txt [PATCH] parport: fix documentation 2006-02-03 08:32:06 -08:00
parport.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci-error-recovery.txt Documentation: remove duplicated words 2006-10-03 22:57:56 +02:00
pci.txt PCI: add pci_try_set_mwi 2007-07-11 16:02:11 -07:00
pcieaer-howto.txt documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
pi-futex.txt fix a typo in Documentation/pi-futex.txt 2006-10-03 23:39:02 +02:00
pm.txt Fix "can not" in Documentation and Kconfig 2006-10-03 22:53:09 +02:00
pnp.txt misc doc and kconfig typos 2007-05-09 08:58:15 +02:00
power_supply_class.txt [BATTERY] Universal power supply class (was: battery class) 2007-07-10 11:25:44 +01:00
preempt-locking.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
prio_tree.txt Documentation: remove duplicated words 2006-10-03 22:57:56 +02:00
ramdisk.txt [PATCH] Update ramdisk documentation 2006-07-14 21:53:53 -07:00
rbtree.txt [PATCH] Documentation/rbtree.txt 2007-02-11 10:51:35 -08:00
riscom8.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
robust-futex-ABI.txt Fix typos in /Documentation : 'U-Z' 2006-11-30 04:58:40 +01:00
robust-futexes.txt Fix typos in /Documentation : Misc 2006-11-30 05:21:10 +01:00
rocket.txt Fix typos in Documentation/: 'S' 2006-10-03 22:55:17 +02:00
rpc-cache.txt Documentation: remove duplicated words 2006-10-03 22:57:56 +02:00
rt-mutex-design.txt [PATCH] typo fixes for rt-mutex-design.txt 2006-10-01 00:39:24 -07:00
rt-mutex.txt [PATCH] pi-futex: rt mutex docs 2006-06-27 17:32:47 -07:00
rtc.txt rtc: make example code jump to done instead of return when ioctl not supported 2007-07-17 10:23:08 -07:00
sched-arch.txt [PATCH] sched: resched and cpu_idle rework 2005-11-09 07:56:33 -08:00
sched-coding.txt Fix typos in Documentation/: 'H'-'M' 2006-10-03 22:50:39 +02:00
sched-design-CFS.txt sched: add CFS documentation 2007-07-09 18:52:00 +02:00
sched-design.txt Fix typos in Documentation/: 'H'-'M' 2006-10-03 22:50:39 +02:00
sched-domains.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched-stats.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial-console.txt [PATCH] doc: more serial-console info 2006-03-25 08:23:00 -08:00
sgi-ioc4.txt [PATCH] ioc4: Core driver rewrite 2005-06-21 18:46:32 -07:00
sgi-visws.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sharedsubtree.txt Fix typos in /Documentation : 'T'' 2006-11-30 04:55:36 +01:00
smart-config.txt kbuild: remove checkconfig.pl 2006-02-19 09:51:22 +01:00
smp.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sony-laptop.txt sony-laptop: update documentation and Kconfig help 2007-04-10 16:01:19 -04:00
sonypi.txt documentation: convert the Documentation directory to UTF-8 2007-05-09 08:58:19 +02:00
sparse.txt [PATCH] update 'getting sparse' info. 2007-03-08 16:47:58 -08:00
specialix.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlocks.txt docs: static initialization of spinlocks is OK 2007-07-16 09:05:52 -07:00
stable_api_nonsense.txt [PATCH] i386: always enable regparm 2006-12-07 02:14:12 +01:00
stable_kernel_rules.txt Fix typos in /Documentation : Misc 2006-11-30 05:21:10 +01:00
stallion.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
svga.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sx.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sysfs-rules.txt Rules on how to use sysfs in userspace programs 2007-07-11 16:09:00 -07:00
sysrq.txt doc: Update sysrq doc for sh kgdb trigger. 2007-05-07 02:10:53 +00:00
thinkpad-acpi.txt ACPI: thinkpad-acpi: do not use named sysfs groups 2007-05-31 12:53:00 -04:00
tipar.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tty.txt tty: Clarify documentation of ->write() 2007-05-08 11:14:59 -07:00
unicode.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unshare.txt Documentation: remove duplicated words 2006-10-03 22:57:56 +02:00
video-output.txt output: Add output class document 2006-12-20 01:46:58 -05:00
volatile-considered-harmful.txt "volatile considered harmful" 2007-06-24 08:59:11 -07:00
voyager.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xterm-linux.xpm Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
zorro.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00

README.cycladesZ 

The Cyclades-Z must have firmware loaded onto the card before it will
operate.  This operation should be performed during system startup,

The firmware, loader program and the latest device driver code are
available from Cyclades at
    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/