git: a03354b00238 - main - arm64/vmm: Implement vm_disable_vcpu_creation()
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Fri, 14 Jun 2024 01:21:20 UTC
The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=a03354b00238b73568efe225c754cba197393f77 commit a03354b00238b73568efe225c754cba197393f77 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2024-06-14 00:16:28 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2024-06-14 01:19:00 +0000 arm64/vmm: Implement vm_disable_vcpu_creation() No functional change intended. Reviewed by: andrew Differential Revision: https://reviews.freebsd.org/D45556 --- sys/arm64/include/vmm.h | 1 + sys/arm64/vmm/vmm.c | 11 ++++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/sys/arm64/include/vmm.h b/sys/arm64/include/vmm.h index c06d2ad947e4..cf00dd60a43f 100644 --- a/sys/arm64/include/vmm.h +++ b/sys/arm64/include/vmm.h @@ -127,6 +127,7 @@ struct vm_eventinfo { int vm_create(const char *name, struct vm **retvm); struct vcpu *vm_alloc_vcpu(struct vm *vm, int vcpuid); +void vm_disable_vcpu_creation(struct vm *vm); void vm_slock_vcpus(struct vm *vm); void vm_unlock_vcpus(struct vm *vm); void vm_destroy(struct vm *vm); diff --git a/sys/arm64/vmm/vmm.c b/sys/arm64/vmm/vmm.c index a2cc63448f19..c6a49ebc4b03 100644 --- a/sys/arm64/vmm/vmm.c +++ b/sys/arm64/vmm/vmm.c @@ -141,6 +141,7 @@ struct vm { volatile cpuset_t active_cpus; /* (i) active vcpus */ volatile cpuset_t debug_cpus; /* (i) vcpus stopped for debug */ int suspend; /* (i) stop VM execution */ + bool dying; /* (o) is dying */ volatile cpuset_t suspended_cpus; /* (i) suspended vcpus */ volatile cpuset_t halted_cpus; /* (x) cpus in a hard halt */ struct mem_map mem_maps[VM_MAX_MEMMAPS]; /* (i) guest address space */ @@ -405,6 +406,14 @@ vm_init(struct vm *vm, bool create) } } +void +vm_disable_vcpu_creation(struct vm *vm) +{ + sx_xlock(&vm->vcpus_init_lock); + vm->dying = true; + sx_xunlock(&vm->vcpus_init_lock); +} + struct vcpu * vm_alloc_vcpu(struct vm *vm, int vcpuid) { @@ -423,7 +432,7 @@ vm_alloc_vcpu(struct vm *vm, int vcpuid) sx_xlock(&vm->vcpus_init_lock); vcpu = vm->vcpu[vcpuid]; - if (vcpu == NULL/* && !vm->dying*/) { + if (vcpu == NULL && !vm->dying) { vcpu = vcpu_alloc(vm, vcpuid); vcpu_init(vcpu);