Commit 0f7451ff authored Jun 10, 2016 by Heiko Carstens Committed by Martin Schwidefsky Jun 13, 2016

s390/ipl: use load normal for LPAR re-ipl



Avoid clearing memory for CCW-type re-ipl within a logical
partition. This can save a significant amount of time if a logical
partition contains a lot of memory.

On the other hand we still clear memory if running within a second
level hypervisor, since the hypervisor can simply free all memory that
was used for the guest.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 6c22c986

arch/s390/kernel/ipl.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1085,6 +1085,9 @@ static void __reipl_run(void *unused)
		break;
		case REIPL_METHOD_CCW_DIAG:
		diag308(DIAG308_SET, reipl_block_ccw);
		if (MACHINE_IS_LPAR)
		diag308(DIAG308_DUMP, NULL);
		else
		diag308(DIAG308_IPL, NULL);
		break;
		case REIPL_METHOD_FCP_RW_DIAG:

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