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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 21:17:07 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 21:17:07 +0100
commitb075083f35309c4f3e50886d6f31a3a0e07a29b5 (patch)
tree862c8241977ec13602b2026dd519c725c52ee2d9 /arch/s390
parente3c699b38ef3c59521fdd1732efcaaa789d81440 (diff)
[S390] Fix FCP dump feature detection.
FCP dump feature detection works only if the sclp command in head.S was succesful. Since the sclp command is skipped if diag260 works, we don't have any dump feature detection anymore. Bug was introduced with d57de5a36791cb1b7285649c62f183b0d3505f7d. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kernel/head64.S6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 6ba3f4512dd1..e940e802cb40 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -81,7 +81,6 @@ startup_continue:
aghi %r1,1 # size is one more than end
larl %r2,memory_chunk
stg %r1,8(%r2) # store size of chunk
- j .Ldonemem
.Lslowmemdetect:
l %r2,.Lrcp-.LPG1(%r13) # Read SCP forced command word
@@ -156,6 +155,11 @@ startup_continue:
#
# find memory chunks.
#
+ larl %r9,memory_chunk # skip tprot loop if diag260
+ lg %r9,8(%r9) # memory detection was successful
+ ltgr %r9,%r9
+ jne .Ldonemem
+
lgr %r9,%r3 # end of mem
larl %r1,.Lchkmem # set program check address
stg %r1,__LC_PGM_NEW_PSW+8