On Thu, Apr 11, 2013 at 07:25:09PM +0800, Yang Zhang wrote:
> From: Yang Zhang <[email protected]>
>
> 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
>
Reviewed-by: Gleb Natapov <[email protected]>
> Changes from v9 to v10:
> * Only check kvm_apic_hw_enable() in vcpu_sacn_ioapic().
> * Remove repeated tracing in __apic_accept_irq().
> * Rebase on top of KVM upstream + RTC eoi tracking patch.
>
> Changes from v8 to v9:
> * Add tracing in PI case when deliver interrupt.
> * Scan ioapic when updating SPIV register.
> * Rebase on top of KVM upstream + RTC eoi tracking patch.
>
> 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.
>
> 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 | 58 +++++++---
> arch/x86/kvm/lapic.h | 2 +
> arch/x86/kvm/svm.c | 12 ++
> arch/x86/kvm/vmx.c | 207
> +++++++++++++++++++++++++++++++-----
> 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, 333 insertions(+), 74 deletions(-)
--
Gleb.
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