KVM: s390: Fix storage attributes migration with memory slots

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This is a fix for several issues that were found in the original code
for storage attributes migration.

Now no bitmap is allocated to keep track of dirty storage attributes;
the extra bits of the per-memslot bitmap that are always present anyway
are now used for this purpose.

The code has also been refactored a little to improve readability.

Fixes: 190df4a212 ("KVM: s390: CMMA tracking, ESSA emulation, migration mode")
Fixes: 4036e3874a ("KVM: s390: ioctls to get and set guest storage attributes")
Acked-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Message-Id: <1525106005-13931-3-git-send-email-imbrenda@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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This commit is contained in:

Claudio Imbrenda 2018-04-30 18:33:25 +02:00 • committed by Christian Borntraeger

parent 03133347b4

commit afdad61615

3 changed files with 195 additions and 135 deletions

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9

arch/s390/include/asm/kvm_host.h

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297

arch/s390/kvm/kvm-s390.c

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28

arch/s390/kvm/priv.c

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