* Sasha Levin <levinsasha928@xxxxxxxxx> wrote:
> Use ioeventfds to receive notifications of IO events in virtio-net.
> Doing so prevents an exit every time we receive/send a packet.
>
> Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
> ---
> tools/kvm/virtio/net.c | 22 ++++++++++++++++++++++
> 1 files changed, 22 insertions(+), 0 deletions(-)
This needs the fix below to build on 32-bit.
Thanks,
Ingo
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
diff --git a/tools/kvm/virtio/net.c b/tools/kvm/virtio/net.c
index 5c39c43..6916af6 100644
--- a/tools/kvm/virtio/net.c
+++ b/tools/kvm/virtio/net.c
@@ -283,7 +283,7 @@ static bool virtio_net_pci_io_out(struct ioport *ioport, struct kvm *kvm, u16 po
static void ioevent_callback(struct kvm *kvm, void *param)
{
- virtio_net_handle_callback(kvm, (u64)param);
+ virtio_net_handle_callback(kvm, (u64)(long)param);
}
static struct ioport_operations virtio_net_io_ops = {
@@ -416,7 +416,7 @@ void virtio_net__init(const struct virtio_net_parameters *params)
.io_len = sizeof(u16),
.fn = ioevent_callback,
.datamatch = i,
- .fn_ptr = (void *)i,
+ .fn_ptr = (void *)(long)i,
.fn_kvm = params->kvm,
.fd = eventfd(0, 0),
};
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