| 9062014cb60194630272709da82d5879d563865e |
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05-Jan-2011 |
Stefan Weinhuber <wein@de.ibm.com> |
[S390] cio: reduce memory consumption of itcw structures
Any list of indirect data adresses (TIDAL) used by a TCW must not
cross a page boundary. The original itcw implementation complies with
this restriction by allocating allmost twice as much memory as
actually needed, so that in any case there is enough room for the full
TIDAL, either above or below the page boundary.
This patch implements an alternative method, by using a TTIC TIDAW to
connect TIDAL parts below and above a page boundary.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/itcw.c
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| c2f0e8c803ceba530060ec9bb9c74a06c2c3d833 |
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08-Jun-2010 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
[S390] appldata/extmem/kvm: add missing GFP_KERNEL flag
Add missing GFP flag to memory allocations. The part in cio only
changes a comment.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
/drivers/s390/cio/itcw.c
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| 23f626894765d4c03b72a0d21e44bc46f5ccd12b |
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14-Jul-2008 |
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> |
[S390] cio: provide helper functions for fcx enabled I/O
Provide functions which can be used to incrementally construct fcx
enabled I/O control blocks.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
/drivers/s390/cio/itcw.c
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