AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

KVM: s390: clear kvm_dirty_regs when dropping to user space

Browse Source 
We should make sure that all kvm_dirty_regs bits are cleared before dropping
to user space. Until now, some would remain pending.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2014-07-29 08:22:33 +02:00 committed by Christian Borntraeger
parent d8482c0d87
commit fbfa304963
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/s390/kvm/kvm-s390.c
View File

@ -1319,15 +1319,13 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask;
vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr;
if (kvm_run->kvm_dirty_regs & KVM_SYNC_PREFIX) {
kvm_run->kvm_dirty_regs &= ~KVM_SYNC_PREFIX;
if (kvm_run->kvm_dirty_regs & KVM_SYNC_PREFIX)
kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix);
}
if (kvm_run->kvm_dirty_regs & KVM_SYNC_CRS) {
kvm_run->kvm_dirty_regs &= ~KVM_SYNC_CRS;
memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128);
kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix);
}
kvm_run->kvm_dirty_regs = 0;
might_fault();
rc = __vcpu_run(vcpu);