search for: last_plt_gtim

...unmasked), vlapic.lvt[LINT0].mask = 1", and enables vlapic timer interrupt generating; In vmx_intr_assist() -> pt_update_irq(), we always choose IRQ0 rather than vlapic timer interrupt, because: 1) is_isa_irq_masked(v, 0) returns false due to vpic.imr.bit0 = 0; 2) the PIT''s pt->last_plt_gtime is less than vlapic timer''s -- at least I can see this on my hosts; However, in pt_update_irq() -> hvm_isa_irq_assert() -> vioapic_irq_positive_edge(), we do nothing but return at once because vioapic.redirtbl[2].mask = 1; Next, in vmx_intr_assist() -> hvm_vcpu_has_pending_irq()...

The value of ACPI PM-Timer may be broken on save unless the timer mode is delay_for_missed_ticks. With other timer modes, vcpu->arch.hvm_vcpu.guest_time is always zero and the adjustment from its value is wrong. This patch fixes the saved value of ACPI PM-Timer: - don''t adjust the PM-Timer if vcpu->arch.hvm_vcpu.guest_time is zero. - consolidate calculations of PM-Timer to one