Harald Freudenberger a758b1d4ca s390/ap: fix state machine hang after failure to enable irq ... [ Upstream commit cabebb697c ] If for any reason the interrupt enable for an ap queue fails the state machine run for the queue returned wrong return codes to the caller. So the caller assumed interrupt support for this queue in enabled and thus did not re-establish the high resolution timer used for polling. In the end this let to a hang for the user space process waiting "forever" for the reply. This patch reworks these return codes to return correct indications for the caller to re-establish the timer when a queue runs without interrupt support. Please note that this is fixing a wrong behavior after a first failure (enable interrupt support for the queue) failed. However, looks like this occasionally happens on KVM systems. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-15 09:50:27 +02:00
..
ap_bus.c	s390/ap: fix state machine hang after failure to enable irq	2021-09-15 09:50:27 +02:00
ap_bus.h	s390/ap: fix state machine hang after failure to enable irq	2021-09-15 09:50:27 +02:00
ap_card.c
ap_debug.h
ap_queue.c	s390/ap: fix state machine hang after failure to enable irq	2021-09-15 09:50:27 +02:00
Makefile
pkey_api.c
vfio_ap_drv.c
vfio_ap_ops.c	s390/crypto: return -EFAULT if copy_to_user() fails	2021-03-17 17:06:19 +01:00
vfio_ap_private.h
zcrypt_api.c
zcrypt_api.h
zcrypt_card.c	s390/zcrypt: fix zcard and zqueue hot-unplug memleak	2021-05-11 14:47:11 +02:00
zcrypt_cca_key.h
zcrypt_ccamisc.c	s390/zcrypt: fix wrong offset index for APKA master key valid state	2021-09-15 09:50:26 +02:00
zcrypt_ccamisc.h
zcrypt_cex2a.c
zcrypt_cex2a.h
zcrypt_cex2c.c
zcrypt_cex2c.h
zcrypt_cex4.c
zcrypt_cex4.h
zcrypt_debug.h
zcrypt_ep11misc.c
zcrypt_ep11misc.h
zcrypt_error.h
zcrypt_msgtype6.c
zcrypt_msgtype6.h
zcrypt_msgtype50.c
zcrypt_msgtype50.h
zcrypt_queue.c	s390/zcrypt: fix zcard and zqueue hot-unplug memleak	2021-05-11 14:47:11 +02:00