-/*
- * NOTE: SPICE_RING_PROD_ITEM accesses memory on the pci bar and as
- * such can be changed by the guest, so to avoid a guest trigerrable
- * abort we just qxl_set_guest_bug and set the return to NULL. Still
- * it may happen as a result of emulator bug as well.
- */
-#undef SPICE_RING_PROD_ITEM
-#define SPICE_RING_PROD_ITEM(qxl, r, ret) { \
- uint32_t prod = (r)->prod & SPICE_RING_INDEX_MASK(r); \
- if (prod >= ARRAY_SIZE((r)->items)) { \
- qxl_set_guest_bug(qxl, "SPICE_RING_PROD_ITEM indices mismatch " \
- "%u >= %zu", prod, ARRAY_SIZE((r)->items)); \
- ret = NULL; \
- } else { \
- ret = &(r)->items[prod].el; \
- } \
- }
-