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Commit f878e436 authored Jul 27, 2005 by Heiko Carstens Committed by Linus Torvalds Jul 27, 2005

[PATCH] s390: 31 bit memory size limit



Limit reported memory size to 2GB if running in 31 bit mode.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 4111796d

arch/s390/kernel/head.S

+6 −1

Original line number	Diff line number	Diff line
		@@ -535,8 +535,13 @@ startup:basr %r13,0 # get base
		lhi %r1,0
		icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0
		jnz .Lscnd
		l %r1,.Lscpincr2-PARMAREA+4(%r4) # otherwise use this one
		lhi %r1,0x800 # otherwise report 2GB
		.Lscnd:
		lhi %r3,0x800 # limit reported memory size to 2GB
		cr %r1,%r3
		jl .Lno2gb
		lr %r1,%r3
		.Lno2gb:
		xr %r3,%r3 # same logic
		ic %r3,.Lscpa1-PARMAREA(%r4)
		chi %r3,0x00