s390/ism: clear dmbe_mask bit before SMC IRQ handling
Ursula Braun authored

SMC-D stress workload showed connection stalls. Since the firmware
decides to skip raising an interrupt if the SBA DMBE mask bit is
still set, this SBA DMBE mask bit should be cleared before the
IRQ handling in the SMC code runs. Otherwise there are small windows
possible with missing interrupts for incoming data.
SMC-D currently does not care about the old value of the SBA DMBE
mask.
Acked-by: default avatarSebastian Ott <sebott@linux.ibm.com>
Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
007b6568
Name Last commit Last update
Documentation Merge tag 'linux-can-fixes-for-4.20-20181109' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
LICENSES Merge tag 'docs-4.20' of git://git.lwn.net/linux
arch Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
block Merge tag 'for-linus-20181109' of git://git.kernel.dk/linux-block
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()
crypto KEYS: asym_tpm: Add support for the sign operation [ver #2]
drivers s390/ism: clear dmbe_mask bit before SMC IRQ handling
firmware kbuild: remove all dummy assignments to obj-
fs Merge tag 'for-4.20-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
include Merge tag 'linux-can-fixes-for-4.20-20181109' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
init memblock: stop using implicit alignment to SMP_CACHE_BYTES
ipc ipc: IPCMNI limit check for semmni
kernel Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
lib lib/raid6: Fix arm64 test build
mm memory_hotplug: cond_resched in __remove_pages
net Merge tag 'linux-can-fixes-for-4.20-20181109' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
samples Merge tag 'vfio-v4.20-rc1.v2' of git://github.com/awilliam/linux-vfio
scripts builddeb: Fix inclusion of dtbs in debian package
security Merge tag 'apparmor-pr-2018-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
sound ALSA: hda - Fix incorrect clearance of thinkpad_acpi hooks
tools Merge tag 'perf-urgent-for-mingo-4.20-20181106' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/
virt Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks"
.clang-format page cache: Convert find_get_pages_contig to XArray
.cocciconfig scripts: add Linux .cocciconfig for coccinelle
.get_maintainer.ignore
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