On 9/4/24 05:07, Rick Edgecombe wrote:
+/* + * A per-CPU list of TD vCPUs associated with a given CPU. Used when a CPU + * is brought down to invoke TDH_VP_FLUSH on the appropriate TD vCPUS.
... or when a vCPU is migrated.
+ * Protected by interrupt mask. This list is manipulated in process context + * of vCPU and IPI callback. See tdx_flush_vp_on_cpu(). + */ +static DEFINE_PER_CPU(struct list_head, associated_tdvcpus);
It may be a bit more modern, or cleaner, to use a local_lock here instead of just relying on local_irq_disable/enable.
Another more organizational question is whether to put this in the VM/vCPU series but I might be missing something obvious.
Paolo
