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s390/mm: let kernel text section always begin at 1MB

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Let the kernel text section always begin at 1MB. This allows to always have
a large frame in the identity mapping of the kernel image for beginning of
the text section, if the machine has EDAT1 support.
Moving the beginning from 64K to 1MB doesn't cost any memory, since we make
the memory between 64K and 1MB available for the page allocator.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2012-10-04 17:13:44 +02:00 committed by Martin Schwidefsky
parent 8fe234d3c8
commit 9be5f34f3f
2 changed files with 0 additions and 6 deletions
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3
arch/s390/kernel/head31.S
View File

@ -78,10 +78,7 @@ ENTRY(startup_continue)
ENTRY(_ehead)
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000 - 0x11000 # head.o ends at 0x11000
#endif
#
# startup-code, running in absolute addressing mode
#

3
arch/s390/kernel/head64.S
View File

@ -76,10 +76,7 @@ ENTRY(startup_continue)
ENTRY(_ehead)
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000 - 0x11000 # head.o ends at 0x11000
#endif
#
# startup-code, running in absolute addressing mode
#