KVM: s390: implement KVM_REQ_TLB_FLUSH and make use of it
Use the KVM_REQ_TLB_FLUSH request in order to trigger tlb flushes instead of manipulating the SIE control block whenever we need it. Also trigger it for a control register sync directly instead of (ab)using kvm_s390_set_prefix(). Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Родитель
b028ee3edd
Коммит
d3d692c82e
|
@ -1051,6 +1051,11 @@ retry:
|
|||
goto retry;
|
||||
}
|
||||
|
||||
if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu)) {
|
||||
vcpu->arch.sie_block->ihcpu = 0xffff;
|
||||
goto retry;
|
||||
}
|
||||
|
||||
if (kvm_check_request(KVM_REQ_ENABLE_IBS, vcpu)) {
|
||||
if (!ibs_enabled(vcpu)) {
|
||||
trace_kvm_s390_enable_disable_ibs(vcpu->vcpu_id, 1);
|
||||
|
@ -1306,7 +1311,8 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
|
|||
kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix);
|
||||
if (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);
|
||||
/* some control register changes require a tlb flush */
|
||||
kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
|
||||
}
|
||||
if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) {
|
||||
vcpu->arch.sie_block->cputm = kvm_run->s.regs.cputm;
|
||||
|
@ -1519,7 +1525,7 @@ void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu)
|
|||
* Another VCPU might have used IBS while we were offline.
|
||||
* Let's play safe and flush the VCPU at startup.
|
||||
*/
|
||||
vcpu->arch.sie_block->ihcpu = 0xffff;
|
||||
kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
|
||||
spin_unlock(&vcpu->kvm->arch.start_stop_lock);
|
||||
return;
|
||||
}
|
||||
|
|
|
@ -70,7 +70,7 @@ static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
|
|||
static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
|
||||
{
|
||||
vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
|
||||
vcpu->arch.sie_block->ihcpu = 0xffff;
|
||||
kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
|
||||
kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
|
||||
}
|
||||
|
||||
|
|
Загрузка…
Ссылка в новой задаче