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Re: [PATCH 3/4] vhost-user: Monitor slave channel in vhost_user_read()
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [PATCH 3/4] vhost-user: Monitor slave channel in vhost_user_read() |
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Date: |
Tue, 9 Mar 2021 15:18:56 +0000 |
On Mon, Mar 08, 2021 at 01:31:40PM +0100, Greg Kurz wrote:
> @@ -363,8 +367,30 @@ static int vhost_user_read(struct vhost_dev *dev,
> VhostUserMsg *msg)
> qemu_chr_be_update_read_handlers(chr->chr, ctxt);
> qemu_chr_fe_add_watch(chr, G_IO_IN | G_IO_HUP, vhost_user_read_cb,
> &data);
>
> + if (u->slave_ioc) {
> + /*
> + * This guarantees that all pending events in the main context
> + * for the slave channel are purged. They will be re-detected
> + * and processed now by the nested loop.
> + */
> + g_source_destroy(u->slave_src);
> + g_source_unref(u->slave_src);
> + u->slave_src = NULL;
> + slave_src = qio_channel_add_watch_source(u->slave_ioc, G_IO_IN,
Why does slave_ioc use G_IO_IN while chr uses G_IO_IN | G_IO_HUP?
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