[patch 10/12] s390: 31 bit memory size limit.
From: Heiko Carstens <[email protected]>
Limit reported memory size to 2GB if running in 31 bit mode.
Signed-off-by: Martin Schwidefsky <[email protected]>
diffstat:
arch/s390/kernel/head.S | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletion(-)
diff -urpN linux-2.6/arch/s390/kernel/head.S linux-2.6-patched/arch/s390/kernel/head.S
--- linux-2.6/arch/s390/kernel/head.S 2005-07-11 17:37:45.000000000 +0200
+++ linux-2.6-patched/arch/s390/kernel/head.S 2005-07-11 17:37:49.000000000 +0200
@@ -535,8 +535,13 @@ startup:basr %r13,0
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
-
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