kernel_optimize_test/arch/s390/boot
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
..
compressed s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
.gitignore s390: introduce .boot.data section compile time validation 2018-10-09 11:21:08 +02:00
als.c s390: warn about clearing als implied facilities 2019-03-01 08:00:42 +01:00
boot.h s390/ipl: read IPL report at early boot 2019-04-26 12:34:05 +02:00
cmdline.c s390: move ipl block and cmd line handling to early boot phase 2018-10-09 11:21:14 +02:00
ctype.c s390: move ipl block and cmd line handling to early boot phase 2018-10-09 11:21:14 +02:00
ebcdic.c s390/decompressor: avoid reusing uncompressed image objects 2018-06-25 10:14:39 +02:00
head_kdump.S s390/boot: make head.S and als.c be part of the decompressor only 2018-06-25 10:14:38 +02:00
head.S s390/sclp: do not use static sccbs 2019-04-29 10:47:10 +02:00
install.sh s390: Remove redundant license text 2017-11-24 15:37:24 +01:00
ipl_parm.c s390/ipl: provide uapi header for list directed IPL 2019-04-26 12:34:05 +02:00
ipl_report.c s390/ipl: read IPL report at early boot 2019-04-26 12:34:05 +02:00
ipl_vmparm.c s390: move ipl block and cmd line handling to early boot phase 2018-10-09 11:21:14 +02:00
machine_kexec_reloc.c s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
Makefile s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
mem_detect.c s390/mem_detect: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD) 2019-03-29 07:23:44 +01:00
mem.S s390/decompressor: reuse lib/mem.S for mem functions 2018-06-25 10:14:39 +02:00
sclp_early_core.c s390/decompressor: avoid reusing uncompressed image objects 2018-06-25 10:14:39 +02:00
startup.c s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
string.c s390/kasan: improve string/memory functions checks 2019-01-18 09:34:18 +01:00
uv.c s390/uv: introduce guest side ultravisor code 2019-04-10 17:47:21 +02:00