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Re: [RFC PATCH v5 12/26] vhost: Route guest->host notification through s


From: Jason Wang
Subject: Re: [RFC PATCH v5 12/26] vhost: Route guest->host notification through shadow virtqueue
Date: Tue, 2 Nov 2021 13:36:41 +0800
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.14.0


在 2021/10/30 上午2:35, Eugenio Pérez 写道:
+/**
+ * Enable or disable shadow virtqueue in a vhost vdpa device.
+ *
+ * This function is idempotent, to call it many times with the same value for
+ * enable_svq will simply return success.
+ *
+ * @v       Vhost vdpa device
+ * @enable  True to set SVQ mode
+ * @errp    Error pointer
+ */
+void vhost_vdpa_enable_svq(struct vhost_vdpa *v, bool enable, Error **errp)
+{


What happens if vhost_vpda is not stated when we try to enable svq? Another note is that, the vhost device could be stopped and started after svq is enabled/disabled. We need to deal with them.

Thanks




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