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-rw-r--r--target/riscv/tcg/tcg-cpu.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 08adad304d..8a35683a34 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -250,6 +250,15 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu)
     for (edata = isa_edata_arr; edata && edata->name; edata++) {
         if (isa_ext_is_enabled(cpu, edata->ext_enable_offset) &&
             (env->priv_ver < edata->min_version)) {
+            /*
+             * These two extensions are always enabled as they were supported
+             * by QEMU before they were added as extensions in the ISA.
+             */
+            if (!strcmp(edata->name, "zicntr") ||
+                !strcmp(edata->name, "zihpm")) {
+                continue;
+            }
+
             isa_ext_update_enabled(cpu, edata->ext_enable_offset, false);
 #ifndef CONFIG_USER_ONLY
             warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx