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KVM: s390: Fix and feature for 5.15
- enable interpretion of specification exceptions - fix a vcpu_idx vs vcpu_id mixup -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJhKxuYAAoJEBF7vIC1phx8w80P/i3mOFrNWyS9eVuFnFc34Bb5 soueWQKv3HR3pdjPhN6GnfkZsZlHjcflTQzvB3QNi6xlfhJSkwh+hoYZvhjZUJCa 25/vRYJfkkp6xWu+tGsfrBC+2e6muFMLE5PRBVvjEcrCb/IM3rfzBazcXwahBuTW oT2j9+eYvlD6hy2kQSHaAkhIW5ldJj6RJ9cVE1lcWs+6YjP6e17a3SHMUXoBUjSv RAIv3iCgK0IuVALGzvC4QeKblTv2l+TrcUyIiQdFjnzv7IIcfPzzJFdYRg6g6pbR vsz5a309MyOaiVERUNqmNhDC0j6TLwS2eSvdqksJXhfmoT1kbK+rkum10IM7Q4ii rmKw3Wmvb+Dyde4SILcpQt2zsg5KjGAOFOqIb0f8lq7cIvrqdA1FbY8XxjJgkmSo EM9GkRWqS6K5nwNV7bSeLmFmdzYeCTFfzeYIPWI/cjZB4KPd9K0aU8LtiLJjZn2y xjfvZE+iRzPZL2sBZLtovhfOrqh8LLTd6o+i6KIgCC98CPOL0Y3ShNxPsCgN1sXH REK9dPKymoXEbFyUabUAerrUrjWZc80AnFZMWTz9wybwTuSWyIGxIUBuq2W1aLSV AKN8BEVdiB2PGsTlzio8JUtDb8dzHbEHyNrzKrYYdPb681b5EYRHZE5Eh9YejiaI I4d6bO1OmJD8uSaF+qRV =Usbs -----END PGP SIGNATURE----- Merge tag 'kvm-s390-next-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Fix and feature for 5.15 - enable interpretion of specification exceptions - fix a vcpu_idx vs vcpu_id mixup
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commit
0d0a19395b
5 changed files with 14 additions and 8 deletions
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@ -244,6 +244,7 @@ struct kvm_s390_sie_block {
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__u8 fpf; /* 0x0060 */
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#define ECB_GS 0x40
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#define ECB_TE 0x10
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#define ECB_SPECI 0x08
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#define ECB_SRSI 0x04
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#define ECB_HOSTPROTINT 0x02
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__u8 ecb; /* 0x0061 */
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@ -957,6 +958,7 @@ struct kvm_arch{
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atomic64_t cmma_dirty_pages;
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/* subset of available cpu features enabled by user space */
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DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
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/* indexed by vcpu_idx */
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DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
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struct kvm_s390_gisa_interrupt gisa_int;
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struct kvm_s390_pv pv;
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@ -419,13 +419,13 @@ static unsigned long deliverable_irqs(struct kvm_vcpu *vcpu)
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static void __set_cpu_idle(struct kvm_vcpu *vcpu)
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{
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kvm_s390_set_cpuflags(vcpu, CPUSTAT_WAIT);
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set_bit(vcpu->vcpu_id, vcpu->kvm->arch.idle_mask);
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set_bit(kvm_vcpu_get_idx(vcpu), vcpu->kvm->arch.idle_mask);
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}
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static void __unset_cpu_idle(struct kvm_vcpu *vcpu)
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{
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kvm_s390_clear_cpuflags(vcpu, CPUSTAT_WAIT);
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clear_bit(vcpu->vcpu_id, vcpu->kvm->arch.idle_mask);
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clear_bit(kvm_vcpu_get_idx(vcpu), vcpu->kvm->arch.idle_mask);
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}
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static void __reset_intercept_indicators(struct kvm_vcpu *vcpu)
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@ -3050,18 +3050,18 @@ int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, __u8 __user *buf, int len)
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static void __airqs_kick_single_vcpu(struct kvm *kvm, u8 deliverable_mask)
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{
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int vcpu_id, online_vcpus = atomic_read(&kvm->online_vcpus);
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int vcpu_idx, online_vcpus = atomic_read(&kvm->online_vcpus);
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struct kvm_s390_gisa_interrupt *gi = &kvm->arch.gisa_int;
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struct kvm_vcpu *vcpu;
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for_each_set_bit(vcpu_id, kvm->arch.idle_mask, online_vcpus) {
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vcpu = kvm_get_vcpu(kvm, vcpu_id);
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for_each_set_bit(vcpu_idx, kvm->arch.idle_mask, online_vcpus) {
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vcpu = kvm_get_vcpu(kvm, vcpu_idx);
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if (psw_ioint_disabled(vcpu))
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continue;
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deliverable_mask &= (u8)(vcpu->arch.sie_block->gcr[6] >> 24);
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if (deliverable_mask) {
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/* lately kicked but not yet running */
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if (test_and_set_bit(vcpu_id, gi->kicked_mask))
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if (test_and_set_bit(vcpu_idx, gi->kicked_mask))
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return;
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kvm_s390_vcpu_wakeup(vcpu);
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return;
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@ -3196,6 +3196,8 @@ static int kvm_s390_vcpu_setup(struct kvm_vcpu *vcpu)
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vcpu->arch.sie_block->ecb |= ECB_SRSI;
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if (test_kvm_facility(vcpu->kvm, 73))
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vcpu->arch.sie_block->ecb |= ECB_TE;
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if (!kvm_is_ucontrol(vcpu->kvm))
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vcpu->arch.sie_block->ecb |= ECB_SPECI;
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if (test_kvm_facility(vcpu->kvm, 8) && vcpu->kvm->arch.use_pfmfi)
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vcpu->arch.sie_block->ecb2 |= ECB2_PFMFI;
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@ -4040,7 +4042,7 @@ static int vcpu_pre_run(struct kvm_vcpu *vcpu)
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kvm_s390_patch_guest_per_regs(vcpu);
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}
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clear_bit(vcpu->vcpu_id, vcpu->kvm->arch.gisa_int.kicked_mask);
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clear_bit(kvm_vcpu_get_idx(vcpu), vcpu->kvm->arch.gisa_int.kicked_mask);
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vcpu->arch.sie_block->icptcode = 0;
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cpuflags = atomic_read(&vcpu->arch.sie_block->cpuflags);
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@ -79,7 +79,7 @@ static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
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static inline int is_vcpu_idle(struct kvm_vcpu *vcpu)
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{
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return test_bit(vcpu->vcpu_id, vcpu->kvm->arch.idle_mask);
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return test_bit(kvm_vcpu_get_idx(vcpu), vcpu->kvm->arch.idle_mask);
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}
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static inline int kvm_is_ucontrol(struct kvm *kvm)
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@ -510,6 +510,8 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
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prefix_unmapped(vsie_page);
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scb_s->ecb |= ECB_TE;
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}
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/* specification exception interpretation */
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scb_s->ecb |= scb_o->ecb & ECB_SPECI;
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/* branch prediction */
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if (test_kvm_facility(vcpu->kvm, 82))
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scb_s->fpf |= scb_o->fpf & FPF_BPBC;
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