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authorVasily Gorbik <gor@linux.ibm.com>2018-06-12 15:11:40 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2018-06-25 10:14:38 +0200
commitbd79d66329580d6c3fd9556423d2e5124906cfdd (patch)
tree55f935b9009565849faa6100e1551c4f6ac2999b /arch/s390/kernel
parents390: remove uncompressed kernel image build (diff)
downloadlinux-bd79d66329580d6c3fd9556423d2e5124906cfdd.tar.xz
linux-bd79d66329580d6c3fd9556423d2e5124906cfdd.zip
s390/decompressor: trim the kernel image up to 1M
Move head64.S main kernel entry point "startup_continue" to 0x100000 and trim everything which is below 1M during build. So, that the decompressor would unpack the main kernel image, move it to 0x100000 and jump to startup_continue. Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/head64.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 791cb9000e86..53e5cb0d6f7f 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -16,6 +16,7 @@
#include <asm/page.h>
__HEAD
+ .org 0x100000 - 0x11000 # head.o ends at 0x11000
ENTRY(startup_continue)
tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ?
jz 0f
@@ -88,7 +89,6 @@ ENTRY(startup_continue)
ENTRY(_ehead)
- .org 0x100000 - 0x11000 # head.o ends at 0x11000
#
# startup-code, running in absolute addressing mode
#