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-rw-r--r--gitlab/issues_text/target_riscv/host_missing/accel_missing/265539
1 files changed, 0 insertions, 39 deletions
diff --git a/gitlab/issues_text/target_riscv/host_missing/accel_missing/2655 b/gitlab/issues_text/target_riscv/host_missing/accel_missing/2655
deleted file mode 100644
index f23243e21..000000000
--- a/gitlab/issues_text/target_riscv/host_missing/accel_missing/2655
+++ /dev/null
@@ -1,39 +0,0 @@
-A problem in target/riscv/vector_helper.c: vext_ldff()
-Description of problem:
-I‘m confused about a behavior in function vext_ldff() in target/riscv/vector_helper.c:
-```
-static inline void
-vext_ldff(...)
-{
-...
-    for (i = env->vstart; i < env->vl; i++) {
-...
-        if (i == 0) {
-            probe_pages(env, addr, nf << log2_esz, ra, MMU_DATA_LOAD);
-        } else {
-...
-                flags = probe_access_flags(env, addr, offset, MMU_DATA_LOAD,
-                                           mmu_index, true, &host, 0);
-...
-                if (flags & ~TLB_WATCHPOINT) {
-                    vl = i;
-                    goto ProbeSuccess;
-                }
-...
-        }
-    }
-ProbeSuccess:
-...
-}
-```
-If the current instruction has a memory callback by plugin, the function probe_access_flags() will return TLB_MMIO when the page is exist.
-
-In this case, the function will always set vl to 1, goto ProbeSuccess, and only load the first element. Does it meet expectations? 
-
-This problem occurred in both linux-user mode and full-system mode.
-
-Maybe we can add extra parameter to probe_access_flags(), in order to change the behavior of inner functions.
-Steps to reproduce:
-1. Make a binary with instruction vle(x)ff.v, what I am using is https://github.com/chipsalliance/riscv-vector-tests.
-2. Write a plugin to add memory callbacks.
-3. Observe the behavior of the function.