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[S390] kernel: Fix dump on panic for DASDs under LPAR.

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Currently the ccw method is used to ipl the DASD dump record under LPAR.
This mechanism is not reliable, which can cause dump failures. This fix
now uses the diag 308 ipl method for all machines, which have diag308
subcode 5 and 4 support.

Signed-off-by: Michael Holzheu <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Michael Holzheu 2007-10-22 12:52:43 +02:00 • committed by Martin Schwidefsky
commit e3d3683d14
1 changed files with 2 additions and 0 deletions
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2
arch/s390/kernel/ipl.c
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@ -648,6 +648,8 @@ static int dump_set_type(enum dump_type type)
case DUMP_TYPE_CCW:
if (MACHINE_IS_VM)
dump_method = DUMP_METHOD_CCW_VM;
else if (diag308_set_works)
dump_method = DUMP_METHOD_CCW_DIAG;
else
dump_method = DUMP_METHOD_CCW_CIO;
break;