search for: kvmi_msg_vm_maybe_reply

...g, + size_t rpl_size, int err) +{ + if (rpl_size) { + kvmi_err(ikvm, "Reply disabled for command %d", msg->id); + return false; + } + + if (err) + kvmi_warn(ikvm, "Error code %d discarded for message id %d\n", + err, msg->id); + + return true; +} + +static int kvmi_msg_vm_maybe_reply(struct kvmi *ikvm, + const struct kvmi_msg_hdr *msg, + int err, const void *rpl, + size_t rpl_size) +{ + if (ikvm->cmd_reply_disabled) { + if (!kvmi_validate_no_reply(ikvm, msg, rpl_size, err)) + return -KVM_EINVAL; + return 0; + } + + return kvmi_msg_vm_reply(ikvm, msg, er...

...ex ea5c7e23669a..2237a6ed25f6 100644 --- a/virt/kvm/kvmi_msg.c +++ b/virt/kvm/kvmi_msg.c @@ -169,7 +169,7 @@ static int handle_get_version(struct kvmi *ikvm, memset(&rpl, 0, sizeof(rpl)); rpl.version = KVMI_VERSION; - return kvmi_msg_vm_reply(ikvm, msg, 0, &rpl, sizeof(rpl)); + return kvmi_msg_vm_maybe_reply(ikvm, msg, 0, &rpl, sizeof(rpl)); } static bool is_command_allowed(struct kvmi *ikvm, int id)

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place