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The VCPU ioctl interface for Mirror VM works as it is, as it uses a CPUState and VCPU file descriptor allocated and setup for mirror vcpus. Signed-off-by: Ashish Kalra --- accel/kvm/kvm-all.c | 23 +++++++++++++++++++++++ include/sysemu/kvm.h | 14 ++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 0125c17edb..4bc5971881 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -149,6 +149,7 @@ struct KVMState uint64_t kvm_dirty_ring_bytes; /* Size of the per-vcpu dirty ring */ uint32_t kvm_dirty_ring_size; /* Number of dirty GFNs per ring */ struct KVMDirtyRingReaper reaper; + int mirror_vm_fd; }; KVMState *kvm_state; @@ -3003,6 +3004,28 @@ int kvm_vm_ioctl(KVMState *s, int type, ...) return ret; } +int kvm_mirror_vm_ioctl(KVMState *s, int type, ...) +{ + int ret; + void *arg; + va_list ap; + + if (!s->mirror_vm_fd) { + return 0; + } + + va_start(ap, type); + arg = va_arg(ap, void *); + va_end(ap); + + trace_kvm_vm_ioctl(type, arg); + ret = ioctl(s->mirror_vm_fd, type, arg); + if (ret == -1) { + ret = -errno; + } + return ret; +} + int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) { int ret; diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index a1ab1ee12d..6847ffcdfd 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -255,6 +255,8 @@ int kvm_ioctl(KVMState *s, int type, ...); int kvm_vm_ioctl(KVMState *s, int type, ...); +int kvm_mirror_vm_ioctl(KVMState *s, int type, ...); + int kvm_vcpu_ioctl(CPUState *cpu, int type, ...); /** @@ -434,6 +436,18 @@ int kvm_vm_check_extension(KVMState *s, unsigned int extension); kvm_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \ }) +#define kvm_mirror_vm_enable_cap(s, capability, cap_flags, ...) \ + ({ \ + struct kvm_enable_cap cap = { \ + .cap = capability, \ + .flags = cap_flags, \ + }; \ + uint64_t args_tmp[] = { __VA_ARGS__ }; \ + size_t n = MIN(ARRAY_SIZE(args_tmp), ARRAY_SIZE(cap.args)); \ + memcpy(cap.args, args_tmp, n * sizeof(cap.args[0])); \ + kvm_mirror_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \ + }) + #define kvm_vcpu_enable_cap(cpu, capability, cap_flags, ...) \ ({ \ struct kvm_enable_cap cap = { \ -- 2.17.1