path: root/Documentation
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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-06 12:34:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-06 12:34:53 -0700
commit2bf1bef0d6c3636353938dd1f183a4522957fc35 (patch)
tree3d0aae8c8454e60b0e53f456b7e94127d91f9ccf /Documentation
parentd7ab7302f970a254997687a1cdede421a5635c68 (diff)
parent996b4a7d8f4e5dd531369396f2312b97e9400cdc (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Martin Schwidefsky: "This is the second batch of s390 patches for the 3.10 merge window. Heiko improved the memory detection, this fixes kdump for large memory sizes. Some kvm related memory management work, new ipldev/condev keywords in cio and bug fixes." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mem_detect: remove artificial kdump memory types s390/mm: add pte invalidation notifier for kvm s390/zcrypt: ap bus rescan problem when toggle crypto adapters on/off s390/memory hotplug,sclp: get rid of per memory increment usecount s390/memory hotplug: provide memory_block_size_bytes() function s390/mem_detect: limit memory detection loop to "mem=" parameter s390/kdump,bootmem: fix bootmem allocator bitmap size s390: get rid of odd global real_memory_size s390/kvm: Change the virtual memory mapping location for Virtio devices s390/zcore: calculate real memory size using own get_mem_size function s390/mem_detect: add DAT sanity check s390/mem_detect: fix lockdep irq tracing s390/mem_detect: move memory detection code to mm folder s390/zfcpdump: exploit new cio_ignore keywords s390/cio: add condev keyword to cio_ignore s390/cio: add ipldev keyword to cio_ignore s390/uaccess: add "fallthrough" comments
Diffstat (limited to 'Documentation')
1 files changed, 7 insertions, 5 deletions
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index d378cba66456..6e0f63f343b4 100644
--- a/Documentation/s390/CommonIO
+++ b/Documentation/s390/CommonIO
@@ -8,9 +8,9 @@ Command line parameters
Enable logging of debug information in case of ccw device timeouts.
-* cio_ignore = {all} |
- {<device> | <range of devices>} |
- {!<device> | !<range of devices>}
+* cio_ignore = device[,device[,..]]
+ device := {all | [!]ipldev | [!]condev | [!]<devno> | [!]<devno>-<devno>}
The given devices will be ignored by the common I/O-layer; no detection
and device sensing will be done on any of those devices. The subchannel to
@@ -24,8 +24,10 @@ Command line parameters
device numbers (0xabcd or abcd, for 2.4 backward compatibility). If you
give a device number 0xabcd, it will be interpreted as 0.0.abcd.
- You can use the 'all' keyword to ignore all devices.
- The '!' operator will cause the I/O-layer to _not_ ignore a device.
+ You can use the 'all' keyword to ignore all devices. The 'ipldev' and 'condev'
+ keywords can be used to refer to the CCW based boot device and CCW console
+ device respectively (these are probably useful only when combined with the '!'
+ operator). The '!' operator will cause the I/O-layer to _not_ ignore a device.
The command line is parsed from left to right.
For example,