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vmnet: stop recieving events when VM is stopped

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When the VM is stopped using the HMP command "stop", soon the handler will
stop reading from the vmnet interface. This causes a flood of
`VMNET_INTERFACE_PACKETS_AVAILABLE` events to arrive and puts the host CPU
at 100%. We fix this by removing the event handler from vmnet when the VM
is no longer in a running state and restore it when we return to a running
state.

Signed-off-by: Joelle van Dyne <j@getutm.app>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Joelle van Dyne 2023-01-01 17:08:21 -08:00 • committed by Jason Wang
parent 0c65ef4fbb
commit 993f71ee33
2 changed files with 37 additions and 13 deletions
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2
net/vmnet_int.h
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@ -45,6 +45,8 @@ typedef struct VmnetState {
int packets_send_end_pos;
struct iovec iov_buf[VMNET_PACKETS_LIMIT];
VMChangeStateEntry *change;
} VmnetState;
const char *vmnet_status_map_str(vmnet_return_t status);