Hi Andre,
On 06/04/17 00:19, Andre Przywara wrote:
+/*
+ * Data structure to describe a virtual ITS.
+ * If both the vcmd_lock and the its_lock are required, the vcmd_lock must
+ * be taken first.
+ */
+struct virt_its {
+ struct domain *d;
+ unsigned int devid_bits;
+ unsigned int intid_bits;
+ spinlock_t vcmd_lock; /* Protects the virtual command buffer, which
*/
+ uint64_t cwriter; /* consists of CBASER and CWRITER and those
*/
s/CBASER/CREADER/
+ uint64_t creadr; /* shadow variables cwriter and creadr. */
+ /* Protects the rest of this structure, including the ITS tables. */
+ spinlock_t its_lock;
+ uint64_t cbaser;
+ uint64_t baser_dev, baser_coll; /* BASER0 and BASER1 for the guest */
+ unsigned int max_collections;
+ unsigned int max_devices;
+ bool enabled;
+};
Cheers,
--
Julien Grall
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