| Message ID | 20200419075106.16248-2-tianjia.zhang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | clean up redundant 'kvm_run' parameters | expand |
On 19.04.20 09:51, Tianjia Zhang wrote: > In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu' > structure. Earlier than historical reasons, many kvm-related function > parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. > This patch does a unified cleanup of these remaining redundant parameters. > > Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> > --- > arch/s390/kvm/kvm-s390.c | 127 +++++++++++++++++++++------------------ > 1 file changed, 67 insertions(+), 60 deletions(-) > > diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c > index 443af3ead739..cf420d013ba3 100644 > --- a/arch/s390/kvm/kvm-s390.c > +++ b/arch/s390/kvm/kvm-s390.c > @@ -4173,24 +4173,25 @@ 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 *run = vcpu->run; Please use kvm_run as variable name. This makes all of the changes below go away. > struct runtime_instr_cb *riccb; > struct gs_cb *gscb; > > - riccb = (struct runtime_instr_cb *) &kvm_run->s.regs.riccb; > - gscb = (struct gs_cb *) &kvm_run->s.regs.gscb; > - vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask; > - vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr; > - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { > - vcpu->arch.sie_block->todpr = kvm_run->s.regs.todpr; > - vcpu->arch.sie_block->pp = kvm_run->s.regs.pp; > - vcpu->arch.sie_block->gbea = kvm_run->s.regs.gbea; > - } > - if (kvm_run->kvm_dirty_regs & KVM_SYNC_PFAULT) { > - vcpu->arch.pfault_token = kvm_run->s.regs.pft; > - vcpu->arch.pfault_select = kvm_run->s.regs.pfs; > - vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; > + riccb = (struct runtime_instr_cb *) &run->s.regs.riccb; > + gscb = (struct gs_cb *) &run->s.regs.gscb; > + vcpu->arch.sie_block->gpsw.mask = run->psw_mask; > + vcpu->arch.sie_block->gpsw.addr = run->psw_addr; > + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { > + vcpu->arch.sie_block->todpr = run->s.regs.todpr; > + vcpu->arch.sie_block->pp = run->s.regs.pp; > + vcpu->arch.sie_block->gbea = run->s.regs.gbea; > + } > + if (run->kvm_dirty_regs & KVM_SYNC_PFAULT) { > + vcpu->arch.pfault_token = run->s.regs.pft; > + vcpu->arch.pfault_select = run->s.regs.pfs; > + vcpu->arch.pfault_compare = run->s.regs.pfc; > if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) > kvm_clear_async_pf_completion_queue(vcpu); > } > @@ -4198,7 +4199,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > * If userspace sets the riccb (e.g. after migration) to a valid state, > * we should enable RI here instead of doing the lazy enablement. > */ > - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_RICCB) && > + if ((run->kvm_dirty_regs & KVM_SYNC_RICCB) && > test_kvm_facility(vcpu->kvm, 64) && > riccb->v && > !(vcpu->arch.sie_block->ecb3 & ECB3_RI)) { > @@ -4209,7 +4210,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > * If userspace sets the gscb (e.g. after migration) to non-zero, > * we should enable GS here instead of doing the lazy enablement. > */ > - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_GSCB) && > + if ((run->kvm_dirty_regs & KVM_SYNC_GSCB) && > test_kvm_facility(vcpu->kvm, 133) && > gscb->gssm && > !vcpu->arch.gs_enabled) { > @@ -4218,10 +4219,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; > vcpu->arch.gs_enabled = 1; > } > - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_BPBC) && > + if ((run->kvm_dirty_regs & KVM_SYNC_BPBC) && > test_kvm_facility(vcpu->kvm, 82)) { > vcpu->arch.sie_block->fpf &= ~FPF_BPBC; > - vcpu->arch.sie_block->fpf |= kvm_run->s.regs.bpbc ? FPF_BPBC : 0; > + vcpu->arch.sie_block->fpf |= run->s.regs.bpbc ? FPF_BPBC : 0; > } > if (MACHINE_HAS_GS) { > preempt_disable(); > @@ -4232,45 +4233,47 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > } > if (vcpu->arch.gs_enabled) { > current->thread.gs_cb = (struct gs_cb *) > - &vcpu->run->s.regs.gscb; > + &run->s.regs.gscb; > restore_gs_cb(current->thread.gs_cb); > } > preempt_enable(); > } > - /* SIE will load etoken directly from SDNX and therefore kvm_run */ > + /* SIE will load etoken directly from SDNX and therefore run */ > } > > -static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > +static void sync_regs(struct kvm_vcpu *vcpu) > { > - 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) { > - memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); > + struct kvm_run *run = vcpu->run; > + > + if (run->kvm_dirty_regs & KVM_SYNC_PREFIX) > + kvm_s390_set_prefix(vcpu, run->s.regs.prefix); > + if (run->kvm_dirty_regs & KVM_SYNC_CRS) { > + memcpy(&vcpu->arch.sie_block->gcr, &run->s.regs.crs, 128); > /* some control register changes require a tlb flush */ > kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); > } > - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { > - kvm_s390_set_cpu_timer(vcpu, kvm_run->s.regs.cputm); > - vcpu->arch.sie_block->ckc = kvm_run->s.regs.ckc; > + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { > + kvm_s390_set_cpu_timer(vcpu, run->s.regs.cputm); > + vcpu->arch.sie_block->ckc = run->s.regs.ckc; > } > save_access_regs(vcpu->arch.host_acrs); > - restore_access_regs(vcpu->run->s.regs.acrs); > + restore_access_regs(run->s.regs.acrs); > /* save host (userspace) fprs/vrs */ > save_fpu_regs(); > vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; > vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; > if (MACHINE_HAS_VX) > - current->thread.fpu.regs = vcpu->run->s.regs.vrs; > + current->thread.fpu.regs = run->s.regs.vrs; > else > - current->thread.fpu.regs = vcpu->run->s.regs.fprs; > - current->thread.fpu.fpc = vcpu->run->s.regs.fpc; > + current->thread.fpu.regs = run->s.regs.fprs; > + current->thread.fpu.fpc = run->s.regs.fpc; > if (test_fp_ctl(current->thread.fpu.fpc)) > /* User space provided an invalid FPC, let's clear it */ > current->thread.fpu.fpc = 0; > > /* 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 > @@ -4282,19 +4285,21 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) > * do only accept the condition code from userspace. > */ > vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_CC; > - vcpu->arch.sie_block->gpsw.mask |= kvm_run->psw_mask & > + vcpu->arch.sie_block->gpsw.mask |= run->psw_mask & > PSW_MASK_CC; > } > > - kvm_run->kvm_dirty_regs = 0; > + 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) > { > - 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; > + struct kvm_run *run = vcpu->run; > + > + run->s.regs.todpr = vcpu->arch.sie_block->todpr; > + run->s.regs.pp = vcpu->arch.sie_block->pp; > + run->s.regs.gbea = vcpu->arch.sie_block->gbea; > + run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC; > if (MACHINE_HAS_GS) { > __ctl_set_bit(2, 4); > if (vcpu->arch.gs_enabled) > @@ -4310,39 +4315,41 @@ 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) > { > - 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); > - memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); > - kvm_run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); > - kvm_run->s.regs.ckc = vcpu->arch.sie_block->ckc; > - kvm_run->s.regs.pft = vcpu->arch.pfault_token; > - kvm_run->s.regs.pfs = vcpu->arch.pfault_select; > - kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; > - save_access_regs(vcpu->run->s.regs.acrs); > + struct kvm_run *run = vcpu->run; > + > + run->psw_mask = vcpu->arch.sie_block->gpsw.mask; > + run->psw_addr = vcpu->arch.sie_block->gpsw.addr; > + run->s.regs.prefix = kvm_s390_get_prefix(vcpu); > + memcpy(&run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); > + run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); > + run->s.regs.ckc = vcpu->arch.sie_block->ckc; > + run->s.regs.pft = vcpu->arch.pfault_token; > + run->s.regs.pfs = vcpu->arch.pfault_select; > + run->s.regs.pfc = vcpu->arch.pfault_compare; > + save_access_regs(run->s.regs.acrs); > restore_access_regs(vcpu->arch.host_acrs); > /* Save guest register state */ > save_fpu_regs(); > - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; > + run->s.regs.fpc = current->thread.fpu.fpc; > /* Restore will be done lazily at return */ > 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) > { > - struct kvm_run *kvm_run = vcpu->run; > + struct kvm_run *run = vcpu->run; > int rc; > > - if (kvm_run->immediate_exit) > + if (run->immediate_exit) > return -EINTR; > > - if (kvm_run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || > - kvm_run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) > + if (run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || > + run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) > return -EINVAL; > > vcpu_load(vcpu); > @@ -4368,14 +4375,14 @@ 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(); > rc = __vcpu_run(vcpu); > > if (signal_pending(current) && !rc) { > - kvm_run->exit_reason = KVM_EXIT_INTR; > + run->exit_reason = KVM_EXIT_INTR; > rc = -EINTR; > } > > @@ -4390,7 +4397,7 @@ 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); > >
On 2020/4/20 15:07, Christian Borntraeger wrote: > > > On 19.04.20 09:51, Tianjia Zhang wrote: >> In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu' >> structure. Earlier than historical reasons, many kvm-related function >> parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. >> This patch does a unified cleanup of these remaining redundant parameters. >> >> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> >> --- >> arch/s390/kvm/kvm-s390.c | 127 +++++++++++++++++++++------------------ >> 1 file changed, 67 insertions(+), 60 deletions(-) >> >> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c >> index 443af3ead739..cf420d013ba3 100644 >> --- a/arch/s390/kvm/kvm-s390.c >> +++ b/arch/s390/kvm/kvm-s390.c >> @@ -4173,24 +4173,25 @@ 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 *run = vcpu->run; > > Please use kvm_run as variable name. This makes all of the changes below go away. > It's OK, I will fix it in v2 patch. Thanks, Tianjia > >> struct runtime_instr_cb *riccb; >> struct gs_cb *gscb; >> >> - riccb = (struct runtime_instr_cb *) &kvm_run->s.regs.riccb; >> - gscb = (struct gs_cb *) &kvm_run->s.regs.gscb; >> - vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask; >> - vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr; >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> - vcpu->arch.sie_block->todpr = kvm_run->s.regs.todpr; >> - vcpu->arch.sie_block->pp = kvm_run->s.regs.pp; >> - vcpu->arch.sie_block->gbea = kvm_run->s.regs.gbea; >> - } >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_PFAULT) { >> - vcpu->arch.pfault_token = kvm_run->s.regs.pft; >> - vcpu->arch.pfault_select = kvm_run->s.regs.pfs; >> - vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; >> + riccb = (struct runtime_instr_cb *) &run->s.regs.riccb; >> + gscb = (struct gs_cb *) &run->s.regs.gscb; >> + vcpu->arch.sie_block->gpsw.mask = run->psw_mask; >> + vcpu->arch.sie_block->gpsw.addr = run->psw_addr; >> + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> + vcpu->arch.sie_block->todpr = run->s.regs.todpr; >> + vcpu->arch.sie_block->pp = run->s.regs.pp; >> + vcpu->arch.sie_block->gbea = run->s.regs.gbea; >> + } >> + if (run->kvm_dirty_regs & KVM_SYNC_PFAULT) { >> + vcpu->arch.pfault_token = run->s.regs.pft; >> + vcpu->arch.pfault_select = run->s.regs.pfs; >> + vcpu->arch.pfault_compare = run->s.regs.pfc; >> if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) >> kvm_clear_async_pf_completion_queue(vcpu); >> } >> @@ -4198,7 +4199,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * If userspace sets the riccb (e.g. after migration) to a valid state, >> * we should enable RI here instead of doing the lazy enablement. >> */ >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_RICCB) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_RICCB) && >> test_kvm_facility(vcpu->kvm, 64) && >> riccb->v && >> !(vcpu->arch.sie_block->ecb3 & ECB3_RI)) { >> @@ -4209,7 +4210,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * If userspace sets the gscb (e.g. after migration) to non-zero, >> * we should enable GS here instead of doing the lazy enablement. >> */ >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_GSCB) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_GSCB) && >> test_kvm_facility(vcpu->kvm, 133) && >> gscb->gssm && >> !vcpu->arch.gs_enabled) { >> @@ -4218,10 +4219,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; >> vcpu->arch.gs_enabled = 1; >> } >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_BPBC) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_BPBC) && >> test_kvm_facility(vcpu->kvm, 82)) { >> vcpu->arch.sie_block->fpf &= ~FPF_BPBC; >> - vcpu->arch.sie_block->fpf |= kvm_run->s.regs.bpbc ? FPF_BPBC : 0; >> + vcpu->arch.sie_block->fpf |= run->s.regs.bpbc ? FPF_BPBC : 0; >> } >> if (MACHINE_HAS_GS) { >> preempt_disable(); >> @@ -4232,45 +4233,47 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> } >> if (vcpu->arch.gs_enabled) { >> current->thread.gs_cb = (struct gs_cb *) >> - &vcpu->run->s.regs.gscb; >> + &run->s.regs.gscb; >> restore_gs_cb(current->thread.gs_cb); >> } >> preempt_enable(); >> } >> - /* SIE will load etoken directly from SDNX and therefore kvm_run */ >> + /* SIE will load etoken directly from SDNX and therefore run */ >> } >> >> -static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> +static void sync_regs(struct kvm_vcpu *vcpu) >> { >> - 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) { >> - memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); >> + struct kvm_run *run = vcpu->run; >> + >> + if (run->kvm_dirty_regs & KVM_SYNC_PREFIX) >> + kvm_s390_set_prefix(vcpu, run->s.regs.prefix); >> + if (run->kvm_dirty_regs & KVM_SYNC_CRS) { >> + memcpy(&vcpu->arch.sie_block->gcr, &run->s.regs.crs, 128); >> /* some control register changes require a tlb flush */ >> kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); >> } >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> - kvm_s390_set_cpu_timer(vcpu, kvm_run->s.regs.cputm); >> - vcpu->arch.sie_block->ckc = kvm_run->s.regs.ckc; >> + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> + kvm_s390_set_cpu_timer(vcpu, run->s.regs.cputm); >> + vcpu->arch.sie_block->ckc = run->s.regs.ckc; >> } >> save_access_regs(vcpu->arch.host_acrs); >> - restore_access_regs(vcpu->run->s.regs.acrs); >> + restore_access_regs(run->s.regs.acrs); >> /* save host (userspace) fprs/vrs */ >> save_fpu_regs(); >> vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; >> vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; >> if (MACHINE_HAS_VX) >> - current->thread.fpu.regs = vcpu->run->s.regs.vrs; >> + current->thread.fpu.regs = run->s.regs.vrs; >> else >> - current->thread.fpu.regs = vcpu->run->s.regs.fprs; >> - current->thread.fpu.fpc = vcpu->run->s.regs.fpc; >> + current->thread.fpu.regs = run->s.regs.fprs; >> + current->thread.fpu.fpc = run->s.regs.fpc; >> if (test_fp_ctl(current->thread.fpu.fpc)) >> /* User space provided an invalid FPC, let's clear it */ >> current->thread.fpu.fpc = 0; >> >> /* 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 >> @@ -4282,19 +4285,21 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * do only accept the condition code from userspace. >> */ >> vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_CC; >> - vcpu->arch.sie_block->gpsw.mask |= kvm_run->psw_mask & >> + vcpu->arch.sie_block->gpsw.mask |= run->psw_mask & >> PSW_MASK_CC; >> } >> >> - kvm_run->kvm_dirty_regs = 0; >> + 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) >> { >> - 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; >> + struct kvm_run *run = vcpu->run; >> + >> + run->s.regs.todpr = vcpu->arch.sie_block->todpr; >> + run->s.regs.pp = vcpu->arch.sie_block->pp; >> + run->s.regs.gbea = vcpu->arch.sie_block->gbea; >> + run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC; >> if (MACHINE_HAS_GS) { >> __ctl_set_bit(2, 4); >> if (vcpu->arch.gs_enabled) >> @@ -4310,39 +4315,41 @@ 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) >> { >> - 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); >> - memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); >> - kvm_run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); >> - kvm_run->s.regs.ckc = vcpu->arch.sie_block->ckc; >> - kvm_run->s.regs.pft = vcpu->arch.pfault_token; >> - kvm_run->s.regs.pfs = vcpu->arch.pfault_select; >> - kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; >> - save_access_regs(vcpu->run->s.regs.acrs); >> + struct kvm_run *run = vcpu->run; >> + >> + run->psw_mask = vcpu->arch.sie_block->gpsw.mask; >> + run->psw_addr = vcpu->arch.sie_block->gpsw.addr; >> + run->s.regs.prefix = kvm_s390_get_prefix(vcpu); >> + memcpy(&run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); >> + run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); >> + run->s.regs.ckc = vcpu->arch.sie_block->ckc; >> + run->s.regs.pft = vcpu->arch.pfault_token; >> + run->s.regs.pfs = vcpu->arch.pfault_select; >> + run->s.regs.pfc = vcpu->arch.pfault_compare; >> + save_access_regs(run->s.regs.acrs); >> restore_access_regs(vcpu->arch.host_acrs); >> /* Save guest register state */ >> save_fpu_regs(); >> - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; >> + run->s.regs.fpc = current->thread.fpu.fpc; >> /* Restore will be done lazily at return */ >> 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) >> { >> - struct kvm_run *kvm_run = vcpu->run; >> + struct kvm_run *run = vcpu->run; >> int rc; >> >> - if (kvm_run->immediate_exit) >> + if (run->immediate_exit) >> return -EINTR; >> >> - if (kvm_run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || >> - kvm_run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) >> + if (run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || >> + run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) >> return -EINVAL; >> >> vcpu_load(vcpu); >> @@ -4368,14 +4375,14 @@ 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(); >> rc = __vcpu_run(vcpu); >> >> if (signal_pending(current) && !rc) { >> - kvm_run->exit_reason = KVM_EXIT_INTR; >> + run->exit_reason = KVM_EXIT_INTR; >> rc = -EINTR; >> } >> >> @@ -4390,7 +4397,7 @@ 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); >> >>
On 4/20/20 9:07 AM, Christian Borntraeger wrote: > > > On 19.04.20 09:51, Tianjia Zhang wrote: >> In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu' >> structure. Earlier than historical reasons, many kvm-related function >> parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. >> This patch does a unified cleanup of these remaining redundant parameters. >> >> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> >> --- >> arch/s390/kvm/kvm-s390.c | 127 +++++++++++++++++++++------------------ >> 1 file changed, 67 insertions(+), 60 deletions(-) >> >> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c >> index 443af3ead739..cf420d013ba3 100644 >> --- a/arch/s390/kvm/kvm-s390.c >> +++ b/arch/s390/kvm/kvm-s390.c >> @@ -4173,24 +4173,25 @@ 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 *run = vcpu->run; > > Please use kvm_run as variable name. This makes all of the changes below go away. Definitely @Tianjia This patch produces way to much churn to be picked up as is. I do not want patches that touch so much for small cosmetic changes. > > >> struct runtime_instr_cb *riccb; >> struct gs_cb *gscb; >> >> - riccb = (struct runtime_instr_cb *) &kvm_run->s.regs.riccb; >> - gscb = (struct gs_cb *) &kvm_run->s.regs.gscb; >> - vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask; >> - vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr; >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> - vcpu->arch.sie_block->todpr = kvm_run->s.regs.todpr; >> - vcpu->arch.sie_block->pp = kvm_run->s.regs.pp; >> - vcpu->arch.sie_block->gbea = kvm_run->s.regs.gbea; >> - } >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_PFAULT) { >> - vcpu->arch.pfault_token = kvm_run->s.regs.pft; >> - vcpu->arch.pfault_select = kvm_run->s.regs.pfs; >> - vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; >> + riccb = (struct runtime_instr_cb *) &run->s.regs.riccb; >> + gscb = (struct gs_cb *) &run->s.regs.gscb; >> + vcpu->arch.sie_block->gpsw.mask = run->psw_mask; >> + vcpu->arch.sie_block->gpsw.addr = run->psw_addr; >> + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> + vcpu->arch.sie_block->todpr = run->s.regs.todpr; >> + vcpu->arch.sie_block->pp = run->s.regs.pp; >> + vcpu->arch.sie_block->gbea = run->s.regs.gbea; >> + } >> + if (run->kvm_dirty_regs & KVM_SYNC_PFAULT) { >> + vcpu->arch.pfault_token = run->s.regs.pft; >> + vcpu->arch.pfault_select = run->s.regs.pfs; >> + vcpu->arch.pfault_compare = run->s.regs.pfc; >> if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) >> kvm_clear_async_pf_completion_queue(vcpu); >> } >> @@ -4198,7 +4199,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * If userspace sets the riccb (e.g. after migration) to a valid state, >> * we should enable RI here instead of doing the lazy enablement. >> */ >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_RICCB) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_RICCB) && >> test_kvm_facility(vcpu->kvm, 64) && >> riccb->v && >> !(vcpu->arch.sie_block->ecb3 & ECB3_RI)) { >> @@ -4209,7 +4210,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * If userspace sets the gscb (e.g. after migration) to non-zero, >> * we should enable GS here instead of doing the lazy enablement. >> */ >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_GSCB) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_GSCB) && >> test_kvm_facility(vcpu->kvm, 133) && >> gscb->gssm && >> !vcpu->arch.gs_enabled) { >> @@ -4218,10 +4219,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; >> vcpu->arch.gs_enabled = 1; >> } >> - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_BPBC) && >> + if ((run->kvm_dirty_regs & KVM_SYNC_BPBC) && >> test_kvm_facility(vcpu->kvm, 82)) { >> vcpu->arch.sie_block->fpf &= ~FPF_BPBC; >> - vcpu->arch.sie_block->fpf |= kvm_run->s.regs.bpbc ? FPF_BPBC : 0; >> + vcpu->arch.sie_block->fpf |= run->s.regs.bpbc ? FPF_BPBC : 0; >> } >> if (MACHINE_HAS_GS) { >> preempt_disable(); >> @@ -4232,45 +4233,47 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> } >> if (vcpu->arch.gs_enabled) { >> current->thread.gs_cb = (struct gs_cb *) >> - &vcpu->run->s.regs.gscb; >> + &run->s.regs.gscb; >> restore_gs_cb(current->thread.gs_cb); >> } >> preempt_enable(); >> } >> - /* SIE will load etoken directly from SDNX and therefore kvm_run */ >> + /* SIE will load etoken directly from SDNX and therefore run */ >> } >> >> -static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> +static void sync_regs(struct kvm_vcpu *vcpu) >> { >> - 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) { >> - memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); >> + struct kvm_run *run = vcpu->run; >> + >> + if (run->kvm_dirty_regs & KVM_SYNC_PREFIX) >> + kvm_s390_set_prefix(vcpu, run->s.regs.prefix); >> + if (run->kvm_dirty_regs & KVM_SYNC_CRS) { >> + memcpy(&vcpu->arch.sie_block->gcr, &run->s.regs.crs, 128); >> /* some control register changes require a tlb flush */ >> kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); >> } >> - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> - kvm_s390_set_cpu_timer(vcpu, kvm_run->s.regs.cputm); >> - vcpu->arch.sie_block->ckc = kvm_run->s.regs.ckc; >> + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { >> + kvm_s390_set_cpu_timer(vcpu, run->s.regs.cputm); >> + vcpu->arch.sie_block->ckc = run->s.regs.ckc; >> } >> save_access_regs(vcpu->arch.host_acrs); >> - restore_access_regs(vcpu->run->s.regs.acrs); >> + restore_access_regs(run->s.regs.acrs); >> /* save host (userspace) fprs/vrs */ >> save_fpu_regs(); >> vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; >> vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; >> if (MACHINE_HAS_VX) >> - current->thread.fpu.regs = vcpu->run->s.regs.vrs; >> + current->thread.fpu.regs = run->s.regs.vrs; >> else >> - current->thread.fpu.regs = vcpu->run->s.regs.fprs; >> - current->thread.fpu.fpc = vcpu->run->s.regs.fpc; >> + current->thread.fpu.regs = run->s.regs.fprs; >> + current->thread.fpu.fpc = run->s.regs.fpc; >> if (test_fp_ctl(current->thread.fpu.fpc)) >> /* User space provided an invalid FPC, let's clear it */ >> current->thread.fpu.fpc = 0; >> >> /* 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 >> @@ -4282,19 +4285,21 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) >> * do only accept the condition code from userspace. >> */ >> vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_CC; >> - vcpu->arch.sie_block->gpsw.mask |= kvm_run->psw_mask & >> + vcpu->arch.sie_block->gpsw.mask |= run->psw_mask & >> PSW_MASK_CC; >> } >> >> - kvm_run->kvm_dirty_regs = 0; >> + 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) >> { >> - 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; >> + struct kvm_run *run = vcpu->run; >> + >> + run->s.regs.todpr = vcpu->arch.sie_block->todpr; >> + run->s.regs.pp = vcpu->arch.sie_block->pp; >> + run->s.regs.gbea = vcpu->arch.sie_block->gbea; >> + run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC; >> if (MACHINE_HAS_GS) { >> __ctl_set_bit(2, 4); >> if (vcpu->arch.gs_enabled) >> @@ -4310,39 +4315,41 @@ 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) >> { >> - 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); >> - memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); >> - kvm_run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); >> - kvm_run->s.regs.ckc = vcpu->arch.sie_block->ckc; >> - kvm_run->s.regs.pft = vcpu->arch.pfault_token; >> - kvm_run->s.regs.pfs = vcpu->arch.pfault_select; >> - kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; >> - save_access_regs(vcpu->run->s.regs.acrs); >> + struct kvm_run *run = vcpu->run; >> + >> + run->psw_mask = vcpu->arch.sie_block->gpsw.mask; >> + run->psw_addr = vcpu->arch.sie_block->gpsw.addr; >> + run->s.regs.prefix = kvm_s390_get_prefix(vcpu); >> + memcpy(&run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); >> + run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); >> + run->s.regs.ckc = vcpu->arch.sie_block->ckc; >> + run->s.regs.pft = vcpu->arch.pfault_token; >> + run->s.regs.pfs = vcpu->arch.pfault_select; >> + run->s.regs.pfc = vcpu->arch.pfault_compare; >> + save_access_regs(run->s.regs.acrs); >> restore_access_regs(vcpu->arch.host_acrs); >> /* Save guest register state */ >> save_fpu_regs(); >> - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; >> + run->s.regs.fpc = current->thread.fpu.fpc; >> /* Restore will be done lazily at return */ >> 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) >> { >> - struct kvm_run *kvm_run = vcpu->run; >> + struct kvm_run *run = vcpu->run; >> int rc; >> >> - if (kvm_run->immediate_exit) >> + if (run->immediate_exit) >> return -EINTR; >> >> - if (kvm_run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || >> - kvm_run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) >> + if (run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || >> + run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) >> return -EINVAL; >> >> vcpu_load(vcpu); >> @@ -4368,14 +4375,14 @@ 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(); >> rc = __vcpu_run(vcpu); >> >> if (signal_pending(current) && !rc) { >> - kvm_run->exit_reason = KVM_EXIT_INTR; >> + run->exit_reason = KVM_EXIT_INTR; >> rc = -EINTR; >> } >> >> @@ -4390,7 +4397,7 @@ 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); >> >>
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 443af3ead739..cf420d013ba3 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4173,24 +4173,25 @@ 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 *run = vcpu->run; struct runtime_instr_cb *riccb; struct gs_cb *gscb; - riccb = (struct runtime_instr_cb *) &kvm_run->s.regs.riccb; - gscb = (struct gs_cb *) &kvm_run->s.regs.gscb; - vcpu->arch.sie_block->gpsw.mask = kvm_run->psw_mask; - vcpu->arch.sie_block->gpsw.addr = kvm_run->psw_addr; - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { - vcpu->arch.sie_block->todpr = kvm_run->s.regs.todpr; - vcpu->arch.sie_block->pp = kvm_run->s.regs.pp; - vcpu->arch.sie_block->gbea = kvm_run->s.regs.gbea; - } - if (kvm_run->kvm_dirty_regs & KVM_SYNC_PFAULT) { - vcpu->arch.pfault_token = kvm_run->s.regs.pft; - vcpu->arch.pfault_select = kvm_run->s.regs.pfs; - vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; + riccb = (struct runtime_instr_cb *) &run->s.regs.riccb; + gscb = (struct gs_cb *) &run->s.regs.gscb; + vcpu->arch.sie_block->gpsw.mask = run->psw_mask; + vcpu->arch.sie_block->gpsw.addr = run->psw_addr; + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { + vcpu->arch.sie_block->todpr = run->s.regs.todpr; + vcpu->arch.sie_block->pp = run->s.regs.pp; + vcpu->arch.sie_block->gbea = run->s.regs.gbea; + } + if (run->kvm_dirty_regs & KVM_SYNC_PFAULT) { + vcpu->arch.pfault_token = run->s.regs.pft; + vcpu->arch.pfault_select = run->s.regs.pfs; + vcpu->arch.pfault_compare = run->s.regs.pfc; if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) kvm_clear_async_pf_completion_queue(vcpu); } @@ -4198,7 +4199,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) * If userspace sets the riccb (e.g. after migration) to a valid state, * we should enable RI here instead of doing the lazy enablement. */ - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_RICCB) && + if ((run->kvm_dirty_regs & KVM_SYNC_RICCB) && test_kvm_facility(vcpu->kvm, 64) && riccb->v && !(vcpu->arch.sie_block->ecb3 & ECB3_RI)) { @@ -4209,7 +4210,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) * If userspace sets the gscb (e.g. after migration) to non-zero, * we should enable GS here instead of doing the lazy enablement. */ - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_GSCB) && + if ((run->kvm_dirty_regs & KVM_SYNC_GSCB) && test_kvm_facility(vcpu->kvm, 133) && gscb->gssm && !vcpu->arch.gs_enabled) { @@ -4218,10 +4219,10 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) vcpu->arch.sie_block->ecd |= ECD_HOSTREGMGMT; vcpu->arch.gs_enabled = 1; } - if ((kvm_run->kvm_dirty_regs & KVM_SYNC_BPBC) && + if ((run->kvm_dirty_regs & KVM_SYNC_BPBC) && test_kvm_facility(vcpu->kvm, 82)) { vcpu->arch.sie_block->fpf &= ~FPF_BPBC; - vcpu->arch.sie_block->fpf |= kvm_run->s.regs.bpbc ? FPF_BPBC : 0; + vcpu->arch.sie_block->fpf |= run->s.regs.bpbc ? FPF_BPBC : 0; } if (MACHINE_HAS_GS) { preempt_disable(); @@ -4232,45 +4233,47 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) } if (vcpu->arch.gs_enabled) { current->thread.gs_cb = (struct gs_cb *) - &vcpu->run->s.regs.gscb; + &run->s.regs.gscb; restore_gs_cb(current->thread.gs_cb); } preempt_enable(); } - /* SIE will load etoken directly from SDNX and therefore kvm_run */ + /* SIE will load etoken directly from SDNX and therefore run */ } -static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +static void sync_regs(struct kvm_vcpu *vcpu) { - 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) { - memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); + struct kvm_run *run = vcpu->run; + + if (run->kvm_dirty_regs & KVM_SYNC_PREFIX) + kvm_s390_set_prefix(vcpu, run->s.regs.prefix); + if (run->kvm_dirty_regs & KVM_SYNC_CRS) { + memcpy(&vcpu->arch.sie_block->gcr, &run->s.regs.crs, 128); /* some control register changes require a tlb flush */ kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); } - if (kvm_run->kvm_dirty_regs & KVM_SYNC_ARCH0) { - kvm_s390_set_cpu_timer(vcpu, kvm_run->s.regs.cputm); - vcpu->arch.sie_block->ckc = kvm_run->s.regs.ckc; + if (run->kvm_dirty_regs & KVM_SYNC_ARCH0) { + kvm_s390_set_cpu_timer(vcpu, run->s.regs.cputm); + vcpu->arch.sie_block->ckc = run->s.regs.ckc; } save_access_regs(vcpu->arch.host_acrs); - restore_access_regs(vcpu->run->s.regs.acrs); + restore_access_regs(run->s.regs.acrs); /* save host (userspace) fprs/vrs */ save_fpu_regs(); vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc; vcpu->arch.host_fpregs.regs = current->thread.fpu.regs; if (MACHINE_HAS_VX) - current->thread.fpu.regs = vcpu->run->s.regs.vrs; + current->thread.fpu.regs = run->s.regs.vrs; else - current->thread.fpu.regs = vcpu->run->s.regs.fprs; - current->thread.fpu.fpc = vcpu->run->s.regs.fpc; + current->thread.fpu.regs = run->s.regs.fprs; + current->thread.fpu.fpc = run->s.regs.fpc; if (test_fp_ctl(current->thread.fpu.fpc)) /* User space provided an invalid FPC, let's clear it */ current->thread.fpu.fpc = 0; /* 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 @@ -4282,19 +4285,21 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) * do only accept the condition code from userspace. */ vcpu->arch.sie_block->gpsw.mask &= ~PSW_MASK_CC; - vcpu->arch.sie_block->gpsw.mask |= kvm_run->psw_mask & + vcpu->arch.sie_block->gpsw.mask |= run->psw_mask & PSW_MASK_CC; } - kvm_run->kvm_dirty_regs = 0; + 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) { - 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; + struct kvm_run *run = vcpu->run; + + run->s.regs.todpr = vcpu->arch.sie_block->todpr; + run->s.regs.pp = vcpu->arch.sie_block->pp; + run->s.regs.gbea = vcpu->arch.sie_block->gbea; + run->s.regs.bpbc = (vcpu->arch.sie_block->fpf & FPF_BPBC) == FPF_BPBC; if (MACHINE_HAS_GS) { __ctl_set_bit(2, 4); if (vcpu->arch.gs_enabled) @@ -4310,39 +4315,41 @@ 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) { - 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); - memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); - kvm_run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); - kvm_run->s.regs.ckc = vcpu->arch.sie_block->ckc; - kvm_run->s.regs.pft = vcpu->arch.pfault_token; - kvm_run->s.regs.pfs = vcpu->arch.pfault_select; - kvm_run->s.regs.pfc = vcpu->arch.pfault_compare; - save_access_regs(vcpu->run->s.regs.acrs); + struct kvm_run *run = vcpu->run; + + run->psw_mask = vcpu->arch.sie_block->gpsw.mask; + run->psw_addr = vcpu->arch.sie_block->gpsw.addr; + run->s.regs.prefix = kvm_s390_get_prefix(vcpu); + memcpy(&run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); + run->s.regs.cputm = kvm_s390_get_cpu_timer(vcpu); + run->s.regs.ckc = vcpu->arch.sie_block->ckc; + run->s.regs.pft = vcpu->arch.pfault_token; + run->s.regs.pfs = vcpu->arch.pfault_select; + run->s.regs.pfc = vcpu->arch.pfault_compare; + save_access_regs(run->s.regs.acrs); restore_access_regs(vcpu->arch.host_acrs); /* Save guest register state */ save_fpu_regs(); - vcpu->run->s.regs.fpc = current->thread.fpu.fpc; + run->s.regs.fpc = current->thread.fpu.fpc; /* Restore will be done lazily at return */ 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) { - struct kvm_run *kvm_run = vcpu->run; + struct kvm_run *run = vcpu->run; int rc; - if (kvm_run->immediate_exit) + if (run->immediate_exit) return -EINTR; - if (kvm_run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || - kvm_run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) + if (run->kvm_valid_regs & ~KVM_SYNC_S390_VALID_FIELDS || + run->kvm_dirty_regs & ~KVM_SYNC_S390_VALID_FIELDS) return -EINVAL; vcpu_load(vcpu); @@ -4368,14 +4375,14 @@ 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(); rc = __vcpu_run(vcpu); if (signal_pending(current) && !rc) { - kvm_run->exit_reason = KVM_EXIT_INTR; + run->exit_reason = KVM_EXIT_INTR; rc = -EINTR; } @@ -4390,7 +4397,7 @@ 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);
In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu' structure. Earlier than historical reasons, many kvm-related function parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. This patch does a unified cleanup of these remaining redundant parameters. Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> --- arch/s390/kvm/kvm-s390.c | 127 +++++++++++++++++++++------------------ 1 file changed, 67 insertions(+), 60 deletions(-)