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target/i386: disable jmp_opt if EFLAGS.RF is 1

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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 8225bff7c5)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Paolo Bonzini 2024-05-24 17:17:47 +02:00 committed by Michael Tokarev
parent 0854469050
commit 89ed6d4b6c
1 changed files with 1 additions and 1 deletions
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target/i386/tcg/translate.c
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@ -6971,7 +6971,7 @@ static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
dc->cpuid_7_1_eax_features = env->features[FEAT_7_1_EAX]; dc->cpuid_7_1_eax_features = env->features[FEAT_7_1_EAX];
dc->cpuid_xsave_features = env->features[FEAT_XSAVE]; dc->cpuid_xsave_features = env->features[FEAT_XSAVE];
dc->jmp_opt = !((cflags & CF_NO_GOTO_TB) || 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. * If jmp_opt, we want to handle each string instruction individually.
* For icount also disable repz optimization so that each iteration * For icount also disable repz optimization so that each iteration