On 2/19/24 18:19, Nicholas Piggin wrote:
+env->access_type = ACCESS_RES;
+host = probe_access(env, addr, size, MMU_DATA_LOAD, mmu_idx, raddr);
+if (host) {
+cpu_set_llsc_prot(cs, qemu_ram_addr_from_host_nofail(host));
+} else {
+/* XXX: fault? */
+g_assert_
Use the generic llsc protection feature to implement real reservation
protection for larx/stcx.
This is more complicated and quite a bit slower than the cmpxchg
pseudo-reservation, so it's questionable whether it should be merged
or ever made the default.
It could possibly be sped up more by tuni
