OpenCloudOS-Kernel/drivers/s390
Ursula Braun 007b656851 s390/ism: clear dmbe_mask bit before SMC IRQ handling
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: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-14 14:21:20 -08:00
..
block s390 updates for the 4.20 merge window 2018-10-23 11:14:47 +01:00
char mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
cio mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
crypto KVM updates for v4.20 2018-10-25 17:57:35 -07:00
net s390/ism: clear dmbe_mask bit before SMC IRQ handling 2018-11-14 14:21:20 -08:00
scsi s390/dasd,zfcp: fix gcc 8 stringop-truncation warnings 2018-07-02 11:24:52 +02:00
virtio mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
Makefile kbuild: rename built-in.o to built-in.a 2018-03-26 02:01:19 +09:00