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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-03-25 15:44:06 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-03-25 15:44:06 +0100 |
| commit | f7b9ddb8a5e8a25954217fa25d114bd8cf4491a4 (patch) | |
| tree | 06837e268d145e59ad46d9cd5f6c36c16f2424c9 /arch/s390/kvm/kvm-s390.c | |
| parent | ea2108c9308071ae41ae6f537724cb2734045943 (diff) | |
| parent | 2ed10cc15e7edf2daf22ce807a877a1266e97711 (diff) | |
Merge tag 'kvm-s390-20140325' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next
3 fixes
- memory leak on certain SIGP conditions
- wrong size for idle bitmap (always too big)
- clear local interrupts on initial CPU reset
1 performance improvement
- improve performance with many guests on certain workloads
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ce5b659ec531..6e1b990e427f 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -255,6 +255,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { int rc; char debug_name[16]; + static unsigned long sca_offset; rc = -EINVAL; #ifdef CONFIG_KVM_S390_UCONTROL @@ -276,6 +277,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) kvm->arch.sca = (struct sca_block *) get_zeroed_page(GFP_KERNEL); if (!kvm->arch.sca) goto out_err; + spin_lock(&kvm_lock); + sca_offset = (sca_offset + 16) & 0x7f0; + kvm->arch.sca = (struct sca_block *) ((char *) kvm->arch.sca + sca_offset); + spin_unlock(&kvm_lock); sprintf(debug_name, "kvm-%u", current->pid); @@ -432,6 +437,7 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; kvm_clear_async_pf_completion_queue(vcpu); atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); + kvm_s390_clear_local_irqs(vcpu); } int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |