| From b75f4c9afac2604feb971441116c07a24ecca1ec Mon Sep 17 00:00:00 2001 |
| From: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> |
| Date: Tue, 3 Mar 2015 09:54:41 +0100 |
| Subject: KVM: s390: Zero out current VMDB of STSI before including level3 data. |
| |
| From: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> |
| |
| commit b75f4c9afac2604feb971441116c07a24ecca1ec upstream. |
| |
| s390 documentation requires words 0 and 10-15 to be reserved and stored as |
| zeros. As we fill out all other fields, we can memset the full structure. |
| |
| Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> |
| Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> |
| Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| arch/s390/kvm/priv.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/arch/s390/kvm/priv.c |
| +++ b/arch/s390/kvm/priv.c |
| @@ -476,6 +476,7 @@ static void handle_stsi_3_2_2(struct kvm |
| for (n = mem->count - 1; n > 0 ; n--) |
| memcpy(&mem->vm[n], &mem->vm[n - 1], sizeof(mem->vm[0])); |
| |
| + memset(&mem->vm[0], 0, sizeof(mem->vm[0])); |
| mem->vm[0].cpus_total = cpus; |
| mem->vm[0].cpus_configured = cpus; |
| mem->vm[0].cpus_standby = 0; |