diff options
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 4 | ||||
| -rw-r--r-- | arch/s390/include/uapi/asm/kvm.h | 7 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 11 | ||||
| -rw-r--r-- | arch/s390/kvm/vsie.c | 1 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 1 |
5 files changed, 20 insertions, 4 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index cee3cb6455a2..371ec6beb618 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -260,7 +260,8 @@ struct kvm_s390_sie_block { __u32 scaol; /* 0x0064 */ __u8 sdf; /* 0x0068 */ __u8 epdx; /* 0x0069 */ - __u8 reserved6a[2]; /* 0x006a */ + __u8 cpnc; /* 0x006a */ + __u8 reserved6b; /* 0x006b */ __u32 todpr; /* 0x006c */ #define GISA_FORMAT1 0x00000001 __u32 gd; /* 0x0070 */ @@ -745,6 +746,7 @@ struct kvm_vcpu_arch { bool gs_enabled; bool skey_enabled; struct kvm_s390_pv_vcpu pv; + union diag318_info diag318_info; }; struct kvm_vm_stat { diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h index 436ec7636927..7a6b14874d65 100644 --- a/arch/s390/include/uapi/asm/kvm.h +++ b/arch/s390/include/uapi/asm/kvm.h @@ -231,11 +231,13 @@ struct kvm_guest_debug_arch { #define KVM_SYNC_GSCB (1UL << 9) #define KVM_SYNC_BPBC (1UL << 10) #define KVM_SYNC_ETOKEN (1UL << 11) +#define KVM_SYNC_DIAG318 (1UL << 12) #define KVM_SYNC_S390_VALID_FIELDS \ (KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \ KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \ - KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN) + KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \ + KVM_SYNC_DIAG318) /* length and alignment of the sdnx as a power of two */ #define SDNXC 8 @@ -264,7 +266,8 @@ struct kvm_sync_regs { __u8 reserved2 : 7; __u8 padding1[51]; /* riccb needs to be 64byte aligned */ __u8 riccb[64]; /* runtime instrumentation controls block */ - __u8 padding2[192]; /* sdnx needs to be 256byte aligned */ + __u64 diag318; /* diagnose 0x318 info */ + __u8 padding2[184]; /* sdnx needs to be 256byte aligned */ union { __u8 sdnx[SDNXL]; /* state description annex */ struct { diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index d47c19718615..08e6cf6cb454 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: @@ -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) @@ -4196,6 +4200,10 @@ 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. @@ -4297,6 +4305,7 @@ static void store_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) 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) diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index 9e9056cebfcf..4f3cbf6003a9 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -548,6 +548,7 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) scb_s->ecd |= scb_o->ecd & ECD_ETOKENF; scb_s->hpid = HPID_VSIE; + scb_s->cpnc = scb_o->cpnc; prepare_ibc(vcpu, vsie_page); rc = shadow_crycb(vcpu, vsie_page); diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 4fdf30316582..35cdb4307904 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1031,6 +1031,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_PPC_SECURE_GUEST 181 #define KVM_CAP_HALT_POLL 182 #define KVM_CAP_ASYNC_PF_INT 183 +#define KVM_CAP_S390_DIAG318 184 #ifdef KVM_CAP_IRQ_ROUTING |