Re: git: d8be3d523dd5 - main - vmm: Use struct vcpu in the rendezvous code.
- In reply to: FreeBSD User : "Re: git: d8be3d523dd5 - main - vmm: Use struct vcpu in the rendezvous code."
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Date: Fri, 18 Nov 2022 19:15:02 UTC
On Fri, Nov 18, 2022 at 07:35:56PM +0100, FreeBSD User wrote: > Am Fri, 18 Nov 2022 18:26:44 GMT > John Baldwin <jhb@FreeBSD.org> schrieb: > > > The branch main has been updated by jhb: > > > > URL: https://cgit.FreeBSD.org/src/commit/?id=d8be3d523dd50a17f48957c1bb2e0cd7bbf02cab > > > > commit d8be3d523dd50a17f48957c1bb2e0cd7bbf02cab > > Author: John Baldwin <jhb@FreeBSD.org> > > AuthorDate: 2022-11-18 18:03:34 +0000 > > Commit: John Baldwin <jhb@FreeBSD.org> > > CommitDate: 2022-11-18 18:25:37 +0000 > > > > vmm: Use struct vcpu in the rendezvous code. > > > > Reviewed by: corvink, markj > > Differential Revision: https://reviews.freebsd.org/D37165 > > --- > > sys/amd64/include/vmm.h | 4 ++-- > > sys/amd64/vmm/io/vioapic.c | 11 +++++------ > > sys/amd64/vmm/io/vlapic.c | 10 +++++----- > > sys/amd64/vmm/io/vlapic.h | 2 +- > > sys/amd64/vmm/vmm.c | 36 +++++++++++++++++------------------- > > 5 files changed, 30 insertions(+), 33 deletions(-) > > > > diff --git a/sys/amd64/include/vmm.h b/sys/amd64/include/vmm.h > > index 2f9a8776bb39..1c68181f5ff4 100644 > > --- a/sys/amd64/include/vmm.h > > +++ b/sys/amd64/include/vmm.h > > @@ -313,8 +313,8 @@ int vm_restore_time(struct vm *vm); > > * by 'dest' to be stalled. The caller should not rely on any vcpus making > > * forward progress when the rendezvous is in progress. > > */ > > -typedef void (*vm_rendezvous_func_t)(struct vm *vm, int vcpuid, void *arg); > > -int vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest, > > +typedef void (*vm_rendezvous_func_t)(struct vcpu *vcpu, void *arg); > > +int vm_smp_rendezvous(struct vcpu *vcpu, cpuset_t dest, > > vm_rendezvous_func_t func, void *arg); > > cpuset_t vm_active_cpus(struct vm *vm); > > cpuset_t vm_debug_cpus(struct vm *vm); > > diff --git a/sys/amd64/vmm/io/vioapic.c b/sys/amd64/vmm/io/vioapic.c > > index 66a394af0d00..aee58849dd7d 100644 > > --- a/sys/amd64/vmm/io/vioapic.c > > +++ b/sys/amd64/vmm/io/vioapic.c > > @@ -237,7 +237,7 @@ vioapic_pulse_irq(struct vm *vm, int irq) > > * configuration. > > */ > > static void > > -vioapic_update_tmr(struct vm *vm, int vcpuid, void *arg) > > +vioapic_update_tmr(struct vcpu *vcpu, void *arg) > > { > > struct vioapic *vioapic; > > struct vlapic *vlapic; > > @@ -245,8 +245,8 @@ vioapic_update_tmr(struct vm *vm, int vcpuid, void *arg) > > int delmode, pin, vector; > > bool level, phys; > > > > - vlapic = vm_lapic(vm_vcpu(vm, vcpuid)); > > - vioapic = vm_ioapic(vm); > > + vlapic = vm_lapic(vcpu); > > + vioapic = vm_ioapic(vcpu_vm(vcpu)); > > > > VIOAPIC_LOCK(vioapic); > > /* > > @@ -317,10 +317,9 @@ vioapic_write(struct vioapic *vioapic, struct vcpu *vcpu, uint32_t addr, > > { > > uint64_t data64, mask64; > > uint64_t last, changed; > > - int regnum, pin, lshift, vcpuid; > > + int regnum, pin, lshift; > > cpuset_t allvcpus; > > > > - vcpuid = vcpu_vcpuid(vcpu); > > regnum = addr & 0xff; > > switch (regnum) { > > case IOAPIC_ID: > > @@ -374,7 +373,7 @@ vioapic_write(struct vioapic *vioapic, struct vcpu *vcpu, uint32_t addr, > > "vlapic trigger-mode register", pin); > > VIOAPIC_UNLOCK(vioapic); > > allvcpus = vm_active_cpus(vioapic->vm); > > - (void)vm_smp_rendezvous(vioapic->vm, vcpuid, allvcpus, > > + (void)vm_smp_rendezvous(vcpu, allvcpus, > > vioapic_update_tmr, NULL); > > VIOAPIC_LOCK(vioapic); > > } > > diff --git a/sys/amd64/vmm/io/vlapic.c b/sys/amd64/vmm/io/vlapic.c > > index 5075336e54bf..67a09401efb1 100644 > > --- a/sys/amd64/vmm/io/vlapic.c > > +++ b/sys/amd64/vmm/io/vlapic.c > > @@ -1200,9 +1200,9 @@ vlapic_icrlo_write_handler(struct vlapic *vlapic, bool *retu) > > } > > > > static void > > -vlapic_handle_init(struct vm *vm, int vcpuid, void *arg) > > +vlapic_handle_init(struct vcpu *vcpu, void *arg) > > { > > - struct vlapic *vlapic = vm_lapic(vm_vcpu(vm, vcpuid)); > > + struct vlapic *vlapic = vm_lapic(vcpu); > > > > vlapic_reset(vlapic); > > > > @@ -1211,13 +1211,13 @@ vlapic_handle_init(struct vm *vm, int vcpuid, void *arg) > > } > > > > int > > -vm_handle_ipi(struct vm *vm, int vcpuid, struct vm_exit *vme, bool *retu) > > +vm_handle_ipi(struct vcpu *vcpu, struct vm_exit *vme, bool *retu) > > { > > *retu = true; > > switch (vme->u.ipi.mode) { > > case APIC_DELMODE_INIT: > > - vm_smp_rendezvous(vm, vcpuid, vme->u.ipi.dmask, > > - vlapic_handle_init, NULL); > > + vm_smp_rendezvous(vcpu, vme->u.ipi.dmask, vlapic_handle_init, > > + NULL); > > break; > > case APIC_DELMODE_STARTUP: > > break; > > diff --git a/sys/amd64/vmm/io/vlapic.h b/sys/amd64/vmm/io/vlapic.h > > index f8ac42fc7514..f6dd9493a5eb 100644 > > --- a/sys/amd64/vmm/io/vlapic.h > > +++ b/sys/amd64/vmm/io/vlapic.h > > @@ -115,6 +115,6 @@ void vlapic_self_ipi_handler(struct vlapic *vlapic, uint64_t val); > > int vlapic_snapshot(struct vm *vm, struct vm_snapshot_meta *meta); > > #endif > > > > -int vm_handle_ipi(struct vm *vm, int vcpuid, struct vm_exit *vme, bool *retu); > > +int vm_handle_ipi(struct vcpu *vcpu, struct vm_exit *vme, bool *retu); > > > > #endif /* _VLAPIC_H_ */ > > diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c > > index cb1a5b62e4f4..f19076f27bb9 100644 > > --- a/sys/amd64/vmm/vmm.c > > +++ b/sys/amd64/vmm/vmm.c > > @@ -1320,15 +1320,14 @@ vcpu_require_state_locked(struct vm *vm, int vcpuid, enum vcpu_state > > newstate) } > > > > static int > > -vm_handle_rendezvous(struct vm *vm, int vcpuid) > > +vm_handle_rendezvous(struct vcpu *vcpu) > > { > > + struct vm *vm = vcpu->vm; > > struct thread *td; > > - int error; > > - > > - KASSERT(vcpuid >= 0 && vcpuid < vm->maxcpus, > > - ("vm_handle_rendezvous: invalid vcpuid %d", vcpuid)); > > + int error, vcpuid; > > > > error = 0; > > + vcpuid = vcpu->vcpuid; > > td = curthread; > > mtx_lock(&vm->rendezvous_mtx); > > while (vm->rendezvous_func != NULL) { > > @@ -1337,18 +1336,18 @@ vm_handle_rendezvous(struct vm *vm, int vcpuid) > > > > if (CPU_ISSET(vcpuid, &vm->rendezvous_req_cpus) && > > !CPU_ISSET(vcpuid, &vm->rendezvous_done_cpus)) { > > - VCPU_CTR0(vm, vcpuid, "Calling rendezvous func"); > > - (*vm->rendezvous_func)(vm, vcpuid, vm->rendezvous_arg); > > + VMM_CTR0(vcpu, "Calling rendezvous func"); > > + (*vm->rendezvous_func)(vcpu, vm->rendezvous_arg); > > CPU_SET(vcpuid, &vm->rendezvous_done_cpus); > > } > > if (CPU_CMP(&vm->rendezvous_req_cpus, > > &vm->rendezvous_done_cpus) == 0) { > > - VCPU_CTR0(vm, vcpuid, "Rendezvous completed"); > > + VMM_CTR0(vcpu, "Rendezvous completed"); > > vm->rendezvous_func = NULL; > > wakeup(&vm->rendezvous_func); > > break; > > } > > - VCPU_CTR0(vm, vcpuid, "Wait for rendezvous completion"); > > + VMM_CTR0(vcpu, "Wait for rendezvous completion"); > > mtx_sleep(&vm->rendezvous_func, &vm->rendezvous_mtx, 0, > > "vmrndv", hz); > > if (td_ast_pending(td, TDA_SUSPEND)) { > > @@ -1626,7 +1625,7 @@ vm_handle_suspend(struct vm *vm, int vcpuid, bool *retu) > > } else { > > VCPU_CTR0(vm, vcpuid, "Rendezvous during suspend"); > > vcpu_unlock(vcpu); > > - error = vm_handle_rendezvous(vm, vcpuid); > > + error = vm_handle_rendezvous(vcpu); > > vcpu_lock(vcpu); > > } > > } > > @@ -1818,7 +1817,7 @@ restart: > > vme->u.ioapic_eoi.vector); > > break; > > case VM_EXITCODE_RENDEZVOUS: > > - error = vm_handle_rendezvous(vm, vcpuid); > > + error = vm_handle_rendezvous(vcpu); > > break; > > case VM_EXITCODE_HLT: > > intr_disabled = ((vme->u.hlt.rflags & PSL_I) == 0); > > @@ -1851,7 +1850,7 @@ restart: > > */ > > if (error == 0 && vme->exitcode == VM_EXITCODE_IPI) { > > retu = false; > > - error = vm_handle_ipi(vm, vcpuid, vme, &retu); > > + error = vm_handle_ipi(vcpu, vme, &retu); > > } > > > > if (error == 0 && retu == false) > > @@ -2564,17 +2563,16 @@ vm_apicid2vcpuid(struct vm *vm, int apicid) > > } > > > > int > > -vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest, > > +vm_smp_rendezvous(struct vcpu *vcpu, cpuset_t dest, > > vm_rendezvous_func_t func, void *arg) > > { > > + struct vm *vm = vcpu->vm; > > int error, i; > > > > /* > > * Enforce that this function is called without any locks > > */ > > WITNESS_WARN(WARN_PANIC, NULL, "vm_smp_rendezvous"); > > - KASSERT(vcpuid >= 0 && vcpuid < vm->maxcpus, > > - ("vm_smp_rendezvous: invalid vcpuid %d", vcpuid)); > > > > restart: > > mtx_lock(&vm->rendezvous_mtx); > > @@ -2584,9 +2582,9 @@ restart: > > * call the rendezvous handler in case this 'vcpuid' is one > > * of the targets of the rendezvous. > > */ > > - VCPU_CTR0(vm, vcpuid, "Rendezvous already in progress"); > > + VMM_CTR0(vcpu, "Rendezvous already in progress"); > > mtx_unlock(&vm->rendezvous_mtx); > > - error = vm_handle_rendezvous(vm, vcpuid); > > + error = vm_handle_rendezvous(vcpu); > > if (error != 0) > > return (error); > > goto restart; > > @@ -2594,7 +2592,7 @@ restart: > > KASSERT(vm->rendezvous_func == NULL, ("vm_smp_rendezvous: previous " > > "rendezvous is still in progress")); > > > > - VCPU_CTR0(vm, vcpuid, "Initiating rendezvous"); > > + VMM_CTR0(vcpu, "Initiating rendezvous"); > > vm->rendezvous_req_cpus = dest; > > CPU_ZERO(&vm->rendezvous_done_cpus); > > vm->rendezvous_arg = arg; > > @@ -2610,7 +2608,7 @@ restart: > > vcpu_notify_event(vm, i, false); > > } > > > > - return (vm_handle_rendezvous(vm, vcpuid)); > > + return (vm_handle_rendezvous(vcpu)); > > } > > > > struct vatpic * > > > > Buildworld fails on this commit: This should be fixed as of commit ca6b48f08034.