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[3/4] target/i386: Added ignore TPR check in ctl_has_irq

Message ID 20210820141558.9031-4-laramglazier@gmail.com (mailing list archive)
State New, archived
Headers show
Series target/i386: V_IRQ masking and V_TPR fixes | expand

Commit Message

Lara Lazier Aug. 20, 2021, 2:15 p.m. UTC 
The APM2 states that if V_IGN_TPR is nonzero, the current
virtual interrupt ignores the (virtual) TPR.

Signed-off-by: Lara Lazier <laramglazier@gmail.com>
---
 target/i386/tcg/sysemu/svm_helper.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/target/i386/tcg/sysemu/svm_helper.c b/target/i386/tcg/sysemu/svm_helper.c
index 2c44bdb243..cbd3f086c4 100644
--- a/target/i386/tcg/sysemu/svm_helper.c
+++ b/target/i386/tcg/sysemu/svm_helper.c
@@ -83,6 +83,11 @@  static inline bool ctl_has_irq(CPUX86State *env)
 
     int_prio = (env->int_ctl & V_INTR_PRIO_MASK) >> V_INTR_PRIO_SHIFT;
     tpr = env->int_ctl & V_TPR_MASK;
+
+    if (env->int_ctl & V_IGN_TPR_MASK) {
+        return env->int_ctl & V_IRQ_MASK;
+    }
+
     return (env->int_ctl & V_IRQ_MASK) && (int_prio >= tpr);
 }