- 20 Sep, 2006 40 commits
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Peter Oberparleiter authored
Reappearing channel paths are sometimes not utilized by CCW devices because path verification incorrectly relies on path-operational-mask information which is not updated until a channel path has been used again. Modify path verification procedure to always query all available paths to a device. Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Peter Oberparleiter authored
CHPIDs that are logically varied off will not be removed from a CCW device's path group because resign-from-pathgroup command is issued with invalid path mask of 0 because internal CCW operations are masked by the logical path mask after the relevant bits are cleared by the vary operation. Do not apply logical path mask to internal operations. Signed-off-by:
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Peter Oberparleiter authored
Subchannel may incorrectly remain in state no-path after channel paths have reappeared. Currently the scan for subchannels which are using a channel path ends at the first occurrence if a full link address was provided by the channel subsystem. The scan needs to continue over all subchannels. Signed-off-by:
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Peter Oberparleiter authored
Specifying kernel parameter "dasd=nopav" on systems running under VM has no function but results in message "disable PAV mode". Correct message is "'nopav' not supported on VM". Signed-off-by:
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Peter Oberparleiter authored
Add the MODALIAS environment variable for ccw bus uevents. Signed-off-by:
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Cornelia Huck authored
Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Gerald Schaefer authored
This introduces new user-copy operations which are optimized for copying more than 256 Bytes on new hardware. Signed-off-by:
Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by:
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Gerald Schaefer authored
Introduces a struct uaccess_ops which allows setting user-copy operations at run-time. Signed-off-by:
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Gerald Schaefer authored
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Gerald Schaefer authored
Changed and simplified some page table related #defines and code. Signed-off-by:
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Melissa Howland authored
This patch delivers a new Linux API in the form of a misc char device that is useable from user space and allows write access to the z/VM APPLDATA Monitor Records collected by the *MONITOR System Service of z/VM. Signed-off-by:
Melissa Howland <melissah@us.ibm.com> Signed-off-by:
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Christian Borntraeger authored
The xpram driver shows and uses 4096 bytes less than available. Signed-off-by:
Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Follow other architectures and remove kexec experimental flag. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Gerald Schaefer authored
Introduce asm header that contains the appldata data structures and the diag inline assembly. Signed-off-by:
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Christian Borntraeger authored
Fix comment typo in vmcp, it is z/VM and not v/VM. Signed-off-by:
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Heiko Carstens authored
Substract the size of the initial stack frame from the correct register. Otherwise we will end up in a program check loop. Fix the offset into the save area as well. Signed-off-by:
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Frank Pavlic authored
The last SLSB has to be set to STATE_PROCESSING if we really want to use the PROCESSING feature. Signed-off-by:
Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Previous patch that was intended to reduce stack usage within common i/o layer didn't consider implicit memset(..., 0, ...) used with the initializations used before. Add these missing memsets wherever it's not obvious that the concerned memory region is zeroed. This should give the same semantics as before. Signed-off-by:
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Heiko Carstens authored
Convert GET_IPL_DEVICE assembler macro to C function. Signed-off-by:
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Heiko Carstens authored
Signed-off-by:
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Martin Schwidefsky authored
With System z9 additional fields have been added to the output of the store system information instruction. This patch adds the new model information field and the alternate cpu capability fields to the output of /proc/sysinfo. While we at it clean up the code as well. Signed-off-by: -
Horst Hummel authored
Enhanced default DBF level to get most important messages in debug feature files. Signed-off-by:
Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
The dasd_device_from_cdev function is called from interrupt context to get the struct dasd_device associated with a ccw device. The driver_data of the ccw device points to the dasd_devmap structure which contains the pointer to the dasd_device structure. The lock that protects the dasd_devmap structure is acquire with out irqsave. To prevent the deadlock in dasd_device_from_cdev if it is called from interrupt context the dependency to the dasd_devmap structure needs to be removed. Let the driver_data of the ccw device point to the dasd_device structure directly and use the ccw device lock to protect the access. Signed-off-by: -
Frank Pavlic authored
qdio_get_micros is supposed to return microseconds. The get_clock() return value needs to be shifted by 12 to get to microseconds. Signed-off-by:
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Heiko Carstens authored
Fix compile warning with some configurations: arch/s390/mm/cmm.c:58: warning: 'cmm_strtoul' defined but not used Originally cmm_strtoul was introduced because simple_strtoul couldn't handle strings with hexadecimal numbers that contained a capital 'X'. Since this is no longer true cmm_strtoul can be removed. Signed-off-by:
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Martin Schwidefsky authored
Add Heiko Carstens as co-maintainer for the s390 architecture. Signed-off-by: -
Martin Schwidefsky authored
Avoid using #undef in unistd.h. Signed-off-by: -
Heiko Carstens authored
If do_signal() gets called several times before returning to user space and no signal is pending (e.g. cancelled by a debugger) syscall restart handling could be done several times. This would change the user space PSW to an address prior to the syscall instruction. Fix this by making sure that syscall restart handling is only done once. Signed-off-by:
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Heiko Carstens authored
Use do { } while (0) constructs instead of empty defines to avoid subtle compile bugs. Signed-off-by: -
Michael Holzheu authored
It is now possible to specify a ccw/fcp dump device which is used to automatically create a system dump in case of a kernel panic. The dump device can be configured under /sys/firmware/dump. In addition it is now possible to specify a ccw/fcp device which is used for the next reboot of Linux. The reipl device can be configured under /sys/firmware/reipl. Signed-off-by:
Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
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Michael Holzheu authored
Add casts to avoid compiler warnings. Signed-off-by:
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Michael Holzheu authored
Correct some comments in the hypervisor filesystem. Signed-off-by:
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Heiko Carstens authored
Move initrd if the bitmap of the bootmem allocator would overwrite it. In addition this patch sets the default size and address of the initrd to 0. Therefore all boot loaders must set the initrd size and address correctly. This is especially relevant for ftp boot via HMC/SE, where this change requires a special patch file entry in the .ins file which sets these two values contained at address 0x10408 and 0x10410. Signed-off-by:
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Michael Grundy authored
Signed-off-by:
Michael Grundy <grundym@us.ibm.com> Signed-off-by:
David Wilder <dwilder@us.ibm.com> Signed-off-by:
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Ralph Wuerthner authored
Allow the user space to send extended cprb messages directly to the PCIXCC / CEX2C cards. This allows the CCA library to construct special crypto requests that use "secure" keys that are stored on the card. Signed-off-by:
Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
The Makefile and Kconfig changes should be obvious. The monolithic build option is there to create an old-style z90crypt module for backward compatability to older distributions. Signed-off-by:
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Martin Schwidefsky authored
Signed-off-by:
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Martin Schwidefsky authored
Signed-off-by:
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Martin Schwidefsky authored
The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by:
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Martin Schwidefsky authored
Add a bus for the adjunct processor interface. Up to 64 devices can be connect to the ap bus interface, each device with 16 domains. That makes 1024 message queues. The interface is asynchronous, the answer to a message sent to a queue needs to be received at some later point in time. Unfortunately the interface does not provide interrupts when a message reply is pending. So the ap bus needs to implement some fancy polling, each active queue is polled once per 1/HZ second or continuously if an idle cpus exsists and the poll thread is activ (see poll_thread parameter). The ap bus uses the sysfs path /sys/bus/ap and has two bus attributes, ap_domain and config_time. The ap_domain selects one of the 16 domains to be used for this system. This limits the maximum number of ap devices to 64. The config_time attribute contains the number of seconds between two ap bus scans to find new devices. The ap bus uses the modalias entries of the form "ap:tN" to autoload the ap driver for hardware type N. Currently known types are: 3 - PCICC, 4 - PCICA, 5 - PCIXCC, 6 - CEX2A and 7 - CEX2C. Signed-off-by:
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