[Stable-8.2.5 20/21] target/i386: disable jmp_opt if EFLAGS.RF is 1

[Michael Tokarev]

From: Paolo Bonzini <pbonzini@redhat.com>

If EFLAGS.RF is 1, special processing in gen_eob_worker() is needed and
therefore goto_tb cannot be used.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 8225bff7c5db504f50e54ef66b079854635dba70)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index b8c648a756..cbf69a64e4 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -6935,7 +6935,7 @@ static void i386_tr_init_disas_context(DisasContextBase 
*dcbase, CPUState *cpu)
     dc->cpuid_7_0_ecx_features = env->features[FEAT_7_0_ECX];
     dc->cpuid_xsave_features = env->features[FEAT_XSAVE];
     dc->jmp_opt = !((cflags & CF_NO_GOTO_TB) ||
-                    (flags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK)));
+                    (flags & (HF_RF_MASK | HF_TF_MASK | HF_INHIBIT_IRQ_MASK)));
     /*
      * If jmp_opt, we want to handle each string instruction individually.
      * For icount also disable repz optimization so that each iteration
-- 
2.39.2