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-rw-r--r--arch/s390/kernel/head64.S12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index c526279e112..6ba3f4512dd 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -172,12 +172,15 @@ startup_continue:
srl %r7,28
clr %r6,%r7 # compare cc with last access code
je .Lsame
- j .Lchkmem
+ lghi %r8,0 # no program checks
+ j .Lsavchk
.Lsame:
algr %r5,%r1 # add 128KB to end of chunk
# no need to check here,
brc 12,.Lloop # this is the same chunk
.Lchkmem: # > 16EB or tprot got a program check
+ lghi %r8,1 # set program check flag
+.Lsavchk:
clgr %r4,%r5 # chunk size > 0?
je .Lchkloop
stg %r4,0(%r3) # store start address of chunk
@@ -204,8 +207,15 @@ startup_continue:
chi %r10, 0 # do we have chunks left?
je .Ldonemem
.Lhsaskip:
+ chi %r8,1 # program check ?
+ je .Lpgmchk
+ lgr %r4,%r5 # potential new chunk
+ algr %r5,%r1 # add 128KB to end of chunk
+ j .Llpcnt
+.Lpgmchk:
algr %r5,%r1 # add 128KB to end of chunk
lgr %r4,%r5 # potential new chunk
+.Llpcnt:
clgr %r5,%r9 # should we go on?
jl .Lloop
.Ldonemem: