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-rw-r--r--arch/s390/kernel/head31.S12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index 4388b3309e0c..eca507050e47 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -164,11 +164,14 @@ startup_continue:
164 srl %r7,28 164 srl %r7,28
165 clr %r6,%r7 # compare cc with last access code 165 clr %r6,%r7 # compare cc with last access code
166 be .Lsame-.LPG1(%r13) 166 be .Lsame-.LPG1(%r13)
167 b .Lchkmem-.LPG1(%r13) 167 lhi %r8,0 # no program checks
168 b .Lsavchk-.LPG1(%r13)
168.Lsame: 169.Lsame:
169 ar %r5,%r1 # add 128KB to end of chunk 170 ar %r5,%r1 # add 128KB to end of chunk
170 bno .Lloop-.LPG1(%r13) # r1 < 0x80000000 -> loop 171 bno .Lloop-.LPG1(%r13) # r1 < 0x80000000 -> loop
171.Lchkmem: # > 2GB or tprot got a program check 172.Lchkmem: # > 2GB or tprot got a program check
173 lhi %r8,1 # set program check flag
174.Lsavchk:
172 clr %r4,%r5 # chunk size > 0? 175 clr %r4,%r5 # chunk size > 0?
173 be .Lchkloop-.LPG1(%r13) 176 be .Lchkloop-.LPG1(%r13)
174 st %r4,0(%r3) # store start address of chunk 177 st %r4,0(%r3) # store start address of chunk
@@ -190,8 +193,15 @@ startup_continue:
190 je .Ldonemem # if not, leave 193 je .Ldonemem # if not, leave
191 chi %r10,0 # do we have chunks left? 194 chi %r10,0 # do we have chunks left?
192 je .Ldonemem 195 je .Ldonemem
196 chi %r8,1 # program check ?
197 je .Lpgmchk
198 lr %r4,%r5 # potential new chunk
199 alr %r5,%r1 # add 128KB to end of chunk
200 j .Llpcnt
201.Lpgmchk:
193 alr %r5,%r1 # add 128KB to end of chunk 202 alr %r5,%r1 # add 128KB to end of chunk
194 lr %r4,%r5 # potential new chunk 203 lr %r4,%r5 # potential new chunk
204.Llpcnt:
195 clr %r5,%r9 # should we go on? 205 clr %r5,%r9 # should we go on?
196 jl .Lloop 206 jl .Lloop
197.Ldonemem: 207.Ldonemem: