@@ -209,6 +209,7 @@ restart:
as the PTE is no longer valid */
MemoryRegion *mr;
hwaddr l = sizeof(target_ulong), addr1;
+ rcu_read_lock();
mr = address_space_translate(cs->as, pte_addr,
&addr1, &l, false);
if (memory_access_is_direct(mr, true)) {
@@ -222,16 +223,19 @@ restart:
target_ulong old_pte =
atomic_cmpxchg(pte_pa, pte, updated_pte);
if (old_pte != pte) {
+ rcu_read_unlock();
goto restart;
} else {
pte = updated_pte;
}
#endif
} else {
+ rcu_read_unlock();
/* misconfigured PTE in ROM (AD bits are not preset) or
* PTE is in IO space and can't be updated atomically */
return TRANSLATE_FAIL;
}
+ rcu_read_unlock();
}
/* for superpage mappings, make a fake leaf PTE for the TLB's