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target/i386: Added V_INTR_PRIO check to virtual interrupts

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The APM2 states that The processor takes a virtual INTR interrupt
if V_IRQ and V_INTR_PRIO indicate that there is a virtual interrupt pending
whose priority is greater than the value in V_TPR.

Signed-off-by: Lara Lazier <laramglazier@gmail.com>
Message-Id: <20210721152651.14683-1-laramglazier@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Lara Lazier 2021-07-21 17:26:49 +02:00 committed by Paolo Bonzini
parent 40e07370f2
commit b128b25a5a
1 changed files with 11 additions and 1 deletions
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12
target/i386/tcg/sysemu/svm_helper.c
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@ -65,6 +65,16 @@ static inline void svm_load_seg_cache(CPUX86State *env, hwaddr addr,
sc->base, sc->limit, sc->flags);
}
static inline bool ctl_has_irq(uint32_t int_ctl)
{
uint32_t int_prio;
uint32_t tpr;
int_prio = (int_ctl & V_INTR_PRIO_MASK) >> V_INTR_MASKING_SHIFT;
tpr = int_ctl & V_TPR_MASK;
return (int_ctl & V_IRQ_MASK) && (int_prio >= tpr);
}
void helper_vmrun(CPUX86State *env, int aflag, int next_eip_addend)
{
CPUState *cs = env_cpu(env);
@ -290,7 +300,7 @@ void helper_vmrun(CPUX86State *env, int aflag, int next_eip_addend)
env->hflags2 |= HF2_GIF_MASK;
if (int_ctl & V_IRQ_MASK) {
if (ctl_has_irq(int_ctl)) {
CPUState *cs = env_cpu(env);
cs->interrupt_request |= CPU_INTERRUPT_VIRQ;