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KVM: s390: Fix clock comparator field for STORE STATUS

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Only the most 7 significant bytes of the clock comparator must be
saved to the status area, and the byte at offset 304 has to be zero.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Thomas Huth 2013-11-13 20:28:18 +01:00 committed by Cornelia Huck
parent e879892c72
commit 178bd78977
1 changed files with 3 additions and 1 deletions
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4
arch/s390/kvm/kvm-s390.c
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@ -877,6 +877,7 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr)
{
unsigned char archmode = 1;
int prefix;
u64 clkcomp;
if (addr == KVM_S390_STORE_STATUS_NOADDR) {
if (copy_to_guest_absolute(vcpu, 163ul, &archmode, 1))
@ -920,8 +921,9 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr)
&vcpu->arch.sie_block->cputm, 8, prefix))
return -EFAULT;
clkcomp = vcpu->arch.sie_block->ckc >> 8;
if (__guestcopy(vcpu, addr + offsetof(struct save_area, clk_cmp),
&vcpu->arch.sie_block->ckc, 8, prefix))
&clkcomp, 8, prefix))
return -EFAULT;
if (__guestcopy(vcpu, addr + offsetof(struct save_area, acc_regs),