linux-stable/drivers/s390
Alexander Egorenkov 0029b4d194 s390/sclp: use only one sclp early buffer to send commands
A buffer that can be used for communication with SCLP is required
to lie below 2GB memory address. Therefore, both sclp_info_sccb
and sclp_early_sccb must fulfill this requirement if passed directly
to the sclp_early_cmd() function. Instead, use only sclp_early_sccb
for communication with SCLP. This allows the buffer sclp_info_sccb
to be placed anywhere in the memory address space and, therefore,
simplifies the process of making the decompressor relocatable later on,
one thing less to relocate. And make sure that the length of the new unified
early SCLP buffer is no less than the length of the removed sclp_info_sccb
buffer which might be larger than the length of the sclp_early_sccb buffer.

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-07-27 09:39:13 +02:00
..
block block-5.14-2021-07-08 2021-07-09 12:05:33 -07:00
char s390/sclp: use only one sclp early buffer to send commands 2021-07-27 09:39:13 +02:00
cio s390/qdio: get rid of register asm 2021-06-28 11:18:29 +02:00
crypto s390/ap: Rework ap_dqap to deal with messages greater than recv buffer 2021-07-08 15:37:27 +02:00
net s390: Fix fall-through warnings for Clang 2021-07-13 14:43:09 -05:00
scsi scsi: zfcp: Report port fc_security as unknown early during remote cable pull 2021-07-12 21:51:50 -04:00
virtio virtio/s390: get rid of open-coded kvm hypercall 2021-06-28 11:18:28 +02:00
Makefile s390: remove pointless drivers-y in drivers/s390/Makefile 2019-09-16 13:21:51 +02:00