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5c1cfb1c39
linux_dsm_epyc7002/drivers/s390/cio
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Dong Jia Shi 5c1cfb1c39 vfio: ccw: refactor and improve pfn_array_alloc_pin() 
This refactors pfn_array_alloc_pin() and also improves it by adding
defensive code in error handling so that calling pfn_array_unpin_free()
after error return won't lead to problem. This mainly does:
1. Merge pfn_array_pin() into pfn_array_alloc_pin(), since there is no
   other user of pfn_array_pin(). As a result, also remove kernel-doc
   for pfn_array_pin() and add/update kernel-doc for pfn_array_alloc_pin()
   and struct pfn_array.
2. For a vfio_pin_pages() failure, set pa->pa_nr to zero to indicate
   zero pages were pinned.
3. Set pa->pa_iova_pfn to NULL right after it was freed.

Suggested-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.ibm.com>
Message-Id: <20180523025645.8978-3-bjsdjshi@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-05-29 09:27:42 +02:00
..
airq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.h s390: add a few more SPDX identifiers 2017-12-05 07:51:09 +01:00
ccwgroup.c s390/cio: add test for ccwgroup device 2018-05-23 08:06:58 +02:00
ccwreq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chp.c s390/cio: add util_string sysfs attribute 2018-03-28 08:38:22 +02:00
chp.h s390/chsc: query utility strings via fmt3 channel path descriptor 2018-03-26 16:13:16 +02:00
chsc_sch.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
chsc_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chsc.c s390/cio: update chpid descriptor after resource accessibility event 2018-04-23 07:57:16 +02:00
chsc.h s390/chsc: query utility strings via fmt3 channel path descriptor 2018-03-26 16:13:16 +02:00
cio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
cio.c s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
cio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmf.c s390/cmf: fix kerneldoc 2018-02-02 10:47:14 +01:00
crw.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
css.c treewide: Use DEVICE_ATTR_RO 2018-01-09 16:34:34 +01:00
css.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_fsm.c s390/cio: clear timer when terminating driver I/O 2018-02-22 10:09:27 +01:00
device_id.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_ops.c s390/cio: add helper to query utility strings per given ccw device 2018-05-23 08:06:56 +02:00
device_pgid.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_status.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device.c s390/cio: fix unbind of io_subchannel_driver 2018-03-26 16:13:06 +02:00
device.h s390/cio: Convert timers to use timer_setup() 2017-11-14 11:01:36 +01:00
eadm_sch.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
eadm_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fcx.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io_sch.h s390/cio: fix return code after missing interrupt 2018-02-22 10:09:25 +01:00
ioasm.c s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
ioasm.h s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
isc.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
itcw.c s390/cio: fix kernel-doc usage 2018-02-05 07:34:52 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
orb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qdio_debug.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qdio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
qdio_main.c s390/qdio: clear intparm during shutdown 2018-04-10 07:38:58 +02:00
qdio_setup.c s390/qdio: lock device while installing IRQ handler 2018-04-10 07:38:58 +02:00
qdio_thinint.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
qdio.h s390: qdio: Convert timers to use timer_setup() 2017-11-14 11:01:33 +01:00
scm.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_cp.c vfio: ccw: refactor and improve pfn_array_alloc_pin() 2018-05-29 09:27:42 +02:00
vfio_ccw_cp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_drv.c vfio: ccw: fix error return in vfio_ccw_sch_event 2018-05-29 09:27:41 +02:00
vfio_ccw_fsm.c vfio: ccw: process ssch with interrupts disabled 2018-04-23 07:57:17 +02:00
vfio_ccw_ops.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_private.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00