Build system and target/i386/translate.c cleanups for 2025-05-25

[PULL 02/24] target/i386: disable jmp_opt if EFLAGS.RF is 1

Paolo Bonzini posted 24 patches 6 months ago

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Maintainers: Gerd Hoffmann <kraxel@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Thomas Huth <thuth@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Hyman Huang <yong.huang@smartx.com>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Laurent Vivier <lvivier@redhat.com>

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[PULL 02/24] target/i386: disable jmp_opt if EFLAGS.RF is 1

Posted by Paolo Bonzini 6 months ago

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>
---
 target/i386/tcg/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 76be7425800..ebcff8766cf 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -4660,7 +4660,7 @@ 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_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
-- 
2.45.1