diff options
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/include/asm/Kbuild | 1 | ||||
-rw-r--r-- | arch/s390/include/asm/kvm_host.h | 8 | ||||
-rw-r--r-- | arch/s390/kvm/kvm-s390.c | 43 |
3 files changed, 29 insertions, 23 deletions
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild index 83f6e85de7bc..319efa0e6d02 100644 --- a/arch/s390/include/asm/Kbuild +++ b/arch/s390/include/asm/Kbuild @@ -6,5 +6,6 @@ generated-y += unistd_nr.h generic-y += asm-offsets.h generic-y += export.h +generic-y += kvm_types.h generic-y += local64.h generic-y += mcs_spinlock.h diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 371ec6beb618..463c24e26000 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -31,12 +31,12 @@ #define KVM_USER_MEM_SLOTS 32 /* - * These seem to be used for allocating ->chip in the routing table, - * which we don't use. 4096 is an out-of-thin-air value. If we need - * to look at ->chip later on, we'll need to revisit this. + * These seem to be used for allocating ->chip in the routing table, which we + * don't use. 1 is as small as we can get to reduce the needed memory. If we + * need to look at ->chip later on, we'll need to revisit this. */ #define KVM_NR_IRQCHIPS 1 -#define KVM_IRQCHIP_NUM_PINS 4096 +#define KVM_IRQCHIP_NUM_PINS 1 #define KVM_HALT_POLL_NS_DEFAULT 50000 /* s390-specific vcpu->requests bit members */ diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 08e6cf6cb454..66da278a67fb 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -3958,33 +3958,31 @@ bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu) return true; } -static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu) +static bool kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu) { hva_t hva; struct kvm_arch_async_pf arch; - int rc; if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) - return 0; + return false; if ((vcpu->arch.sie_block->gpsw.mask & vcpu->arch.pfault_select) != vcpu->arch.pfault_compare) - return 0; + return false; if (psw_extint_disabled(vcpu)) - return 0; + return false; if (kvm_s390_vcpu_has_irq(vcpu, 0)) - return 0; + return false; if (!(vcpu->arch.sie_block->gcr[0] & CR0_SERVICE_SIGNAL_SUBMASK)) - return 0; + return false; if (!vcpu->arch.gmap->pfault_enabled) - return 0; + return false; hva = gfn_to_hva(vcpu->kvm, gpa_to_gfn(current->thread.gmap_addr)); hva += current->thread.gmap_addr & ~PAGE_MASK; if (read_guest_real(vcpu, vcpu->arch.pfault_token, &arch.pfault_token, 8)) - return 0; + return false; - rc = kvm_setup_async_pf(vcpu, current->thread.gmap_addr, hva, &arch); - return rc; + return kvm_setup_async_pf(vcpu, current->thread.gmap_addr, hva, &arch); } static int vcpu_pre_run(struct kvm_vcpu *vcpu) @@ -4179,8 +4177,9 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) return rc; } -static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void sync_regs_fmt2(struct kvm_vcpu *vcpu) { + struct kvm_run *kvm_run = vcpu->run; struct runtime_instr_cb *riccb; struct gs_cb *gscb; @@ -4250,8 +4249,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) /* SIE will load etoken directly from SDNX and therefore kvm_run */ } -static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void sync_regs(struct kvm_vcpu *vcpu) { + struct kvm_run *kvm_run = vcpu->run; + 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) { @@ -4280,7 +4281,7 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) /* Sync fmt2 only data */ if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) { - sync_regs_fmt2(vcpu, kvm_run); + sync_regs_fmt2(vcpu); } else { /* * In several places we have to modify our internal view to @@ -4299,8 +4300,10 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) kvm_run->kvm_dirty_regs = 0; } -static void store_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void store_regs_fmt2(struct kvm_vcpu *vcpu) { + struct kvm_run *kvm_run = vcpu->run; + kvm_run->s.regs.todpr = vcpu->arch.sie_block->todpr; kvm_run->s.regs.pp = vcpu->arch.sie_block->pp; kvm_run->s.regs.gbea = vcpu->arch.sie_block->gbea; @@ -4321,8 +4324,10 @@ static void store_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) /* SIE will save etoken directly into SDNX and therefore kvm_run */ } -static void store_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void store_regs(struct kvm_vcpu *vcpu) { + struct kvm_run *kvm_run = vcpu->run; + kvm_run->psw_mask = vcpu->arch.sie_block->gpsw.mask; kvm_run->psw_addr = vcpu->arch.sie_block->gpsw.addr; kvm_run->s.regs.prefix = kvm_s390_get_prefix(vcpu); @@ -4341,7 +4346,7 @@ static void store_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc; current->thread.fpu.regs = vcpu->arch.host_fpregs.regs; if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) - store_regs_fmt2(vcpu, kvm_run); + store_regs_fmt2(vcpu); } int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) @@ -4379,7 +4384,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) goto out; } - sync_regs(vcpu, kvm_run); + sync_regs(vcpu); enable_cpu_timer_accounting(vcpu); might_fault(); @@ -4401,7 +4406,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) } disable_cpu_timer_accounting(vcpu); - store_regs(vcpu, kvm_run); + store_regs(vcpu); kvm_sigset_deactivate(vcpu); |