From: Yang Zhang <yang.z.zh...@intel.com> The follwoing patches are adding the Posted Interrupt supporting to KVM: The first patch enables the feature 'acknowledge interrupt on vmexit'.Since it is required by Posted interrupt, we need to enable it firstly.
And the subsequent patches are adding the posted interrupt supporting: Posted Interrupt allows APIC interrupts to inject into guest directly without any vmexit. - When delivering a interrupt to guest, if target vcpu is running, update Posted-interrupt requests bitmap and send a notification event to the vcpu. Then the vcpu will handle this interrupt automatically, without any software involvemnt. - If target vcpu is not running or there already a notification event pending in the vcpu, do nothing. The interrupt will be handled by next vm entry Changes from v7 to v8: * Remove unused memeber 'on' from struct pi_desc. * Register a dummy function to sync_pir_to_irr is apicv is disabled. * Minor fixup. * Rebase on top of KVM upstream + RTC eoi tracking patch. Changes from v6 to v7: * Update TMR when ioapic/lapic's id/ldr/dfr is changed. According to SDM, Software should not touch virual apic page when target vcpu in non-root mode. Obviously, set TMR when delivering interrupt is break the rule. So only update TMR when in target vcpu's context. * Clear outstanding notification bit before sync pir to irr. * Sync pit to irr before touch irr. Changes from v5 to v6: * Split sync_pir_to_irr into two functions one to query whether PIR is empty and the other to perform the sync. * Add comments to explain how vmx_sync_pir_to_irr() work. * Rebase on top of KVM upstream. Yang Zhang (7): KVM: VMX: Enable acknowledge interupt on vmexit KVM: VMX: Register a new IPI for posted interrupt KVM: VMX: Check the posted interrupt capability KVM: Call common update function when ioapic entry changed. KVM: Set TMR when programming ioapic entry KVM: VMX: Add the algorithm of deliver posted interrupt KVM: VMX: Use posted interrupt to deliver virtual interrupt arch/ia64/kvm/lapic.h | 6 - arch/x86/include/asm/entry_arch.h | 4 + arch/x86/include/asm/hardirq.h | 3 + arch/x86/include/asm/hw_irq.h | 1 + arch/x86/include/asm/irq_vectors.h | 5 + arch/x86/include/asm/kvm_host.h | 3 + arch/x86/include/asm/vmx.h | 4 + arch/x86/kernel/entry_64.S | 5 + arch/x86/kernel/irq.c | 22 ++++ arch/x86/kernel/irqinit.c | 4 + arch/x86/kvm/lapic.c | 61 +++++++---- arch/x86/kvm/lapic.h | 3 + arch/x86/kvm/svm.c | 12 ++ arch/x86/kvm/vmx.c | 209 +++++++++++++++++++++++++++++++----- arch/x86/kvm/x86.c | 19 +++- include/linux/kvm_host.h | 4 +- virt/kvm/ioapic.c | 32 ++++-- virt/kvm/ioapic.h | 7 +- virt/kvm/irq_comm.c | 4 +- virt/kvm/kvm_main.c | 5 +- 20 files changed, 337 insertions(+), 76 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
