linux/drivers/s390
Gerald Schaefer 087c4d7423 s390/sclp: do not use static sccbs
The sccbs for init/read/sdias/early have to be located below 2 GB, and
they are currently defined as a static buffer.

With a relocatable kernel that could reside at any place in memory, this
will no longer guarantee the location below 2 GB, so use a dynamic
GFP_DMA allocation instead.

The sclp_early_sccb buffer needs special handling, as it can be used
very early, and by both the decompressor and also the decompressed
kernel. Therefore, a fixed 4 KB buffer is introduced at 0x11000, the
former PARMAREA_END. The new PARMAREA_END is now 0x12000, and it is
renamed to HEAD_END, as it is rather the end of head.S and not the end
of the parmarea.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-29 10:47:10 +02:00
..
block s390/dasd: Fix capacity calculation for large volumes 2019-03-29 07:23:44 +01:00
char s390/sclp: do not use static sccbs 2019-04-29 10:47:10 +02:00
cio s390: show statistics for MSI IRQs 2019-04-29 10:47:01 +02:00
crypto s390/airq: recognize directed interrupts 2019-04-29 10:47:01 +02:00
net s390/ism: move oddities of device IO to wrapper function 2019-04-29 10:47:01 +02:00
scsi s390 updates for the 5.1 merge window 2019-03-05 11:13:10 -08:00
virtio s390/airq: recognize directed interrupts 2019-04-29 10:47:01 +02:00
Makefile kbuild: rename built-in.o to built-in.a 2018-03-26 02:01:19 +09:00