diff options
| author | Carsten Otte <cotte@de.ibm.com> | 2011-07-24 10:48:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-07-24 10:48:21 +0200 |
| commit | f7850c92884b40915001e332a0a33ed4f10158e8 (patch) | |
| tree | 224c0d42a958aadcd198b1258578e7a07b36ff9f /arch/s390/kvm/kvm-s390.c | |
| parent | 092670cd90eb88c33661de21f1b4ee08d2597171 (diff) | |
[S390] remove kvm mmu reload on s390
This patch removes the mmu reload logic for kvm on s390. Via Martin's
new gmap interface, we can safely add or remove memory slots while
guest CPUs are in-flight. Thus, the mmu reload logic is not needed
anymore.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 5a99f342fd0b..f17296e4fc89 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -294,7 +294,6 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) { atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH | CPUSTAT_SM); - set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests); vcpu->arch.sie_block->ecb = 6; vcpu->arch.sie_block->eca = 0xC1002001U; vcpu->arch.sie_block->fac = (int) (long) facilities; @@ -485,10 +484,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) sigset_t sigsaved; rerun_vcpu: - if (vcpu->requests) - if (test_and_clear_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests)) - kvm_s390_vcpu_set_mem(vcpu); - if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); @@ -701,21 +696,13 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, struct kvm_memory_slot old, int user_alloc) { - int i, rc; - struct kvm_vcpu *vcpu; + int rc; rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr, mem->guest_phys_addr, mem->memory_size); if (rc) - return; - - /* request update of sie control block for all available vcpus */ - kvm_for_each_vcpu(i, vcpu, kvm) { - if (test_and_set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests)) - continue; - kvm_s390_inject_sigp_stop(vcpu, ACTION_RELOADVCPU_ON_STOP); - } + printk(KERN_WARNING "kvm-s390: failed to commit memory region\n"); return; } |