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Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
-rw-r--r--arch/s390/kvm/kvm-s390.c56
1 files changed, 35 insertions, 21 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d47c19718615..6b74b92c1a58 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -545,6 +545,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_AIS_MIGRATION:
case KVM_CAP_S390_VCPU_RESETS:
case KVM_CAP_SET_GUEST_DEBUG:
+ case KVM_CAP_S390_DIAG318:
r = 1;
break;
case KVM_CAP_S390_HPAGE_1M:
@@ -1891,7 +1892,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args)
r = set_guest_storage_key(current->mm, hva, keys[i], 0);
if (r) {
- r = fixup_user_fault(current, current->mm, hva,
+ r = fixup_user_fault(current->mm, hva,
FAULT_FLAG_WRITE, &unlocked);
if (r)
break;
@@ -3267,7 +3268,8 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
KVM_SYNC_ACRS |
KVM_SYNC_CRS |
KVM_SYNC_ARCH0 |
- KVM_SYNC_PFAULT;
+ KVM_SYNC_PFAULT |
+ KVM_SYNC_DIAG318;
kvm_s390_set_prefix(vcpu, 0);
if (test_kvm_facility(vcpu->kvm, 64))
vcpu->run->kvm_valid_regs |= KVM_SYNC_RICCB;
@@ -3562,6 +3564,7 @@ static void kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->pp = 0;
vcpu->arch.sie_block->fpf &= ~FPF_BPBC;
vcpu->arch.sie_block->todpr = 0;
+ vcpu->arch.sie_block->cpnc = 0;
}
}
@@ -3579,6 +3582,7 @@ static void kvm_arch_vcpu_ioctl_clear_reset(struct kvm_vcpu *vcpu)
regs->etoken = 0;
regs->etoken_extension = 0;
+ regs->diag318 = 0;
}
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
@@ -3954,33 +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)
@@ -4175,8 +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;
@@ -4196,6 +4199,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID)
kvm_clear_async_pf_completion_queue(vcpu);
}
+ if (kvm_run->kvm_dirty_regs & KVM_SYNC_DIAG318) {
+ vcpu->arch.diag318_info.val = kvm_run->s.regs.diag318;
+ vcpu->arch.sie_block->cpnc = vcpu->arch.diag318_info.cpnc;
+ }
/*
* If userspace sets the riccb (e.g. after migration) to a valid state,
* we should enable RI here instead of doing the lazy enablement.
@@ -4242,8 +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) {
@@ -4272,7 +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
@@ -4291,12 +4300,15 @@ 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;
kvm_run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC;
+ kvm_run->s.regs.diag318 = vcpu->arch.diag318_info.val;
if (MACHINE_HAS_GS) {
__ctl_set_bit(2, 4);
if (vcpu->arch.gs_enabled)
@@ -4312,8 +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);
@@ -4332,7 +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)
@@ -4370,7 +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();
@@ -4392,7 +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);
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-19 21:16:20 +0000