Re: [PATCH v5 0/3] x86, apicv: Add APIC virtualization support

[Gleb Natapov <gleb@redhat.com>]

Are you going to send the patch that removes non working PIT interrupt
redirection hack, or should I do it?

On Mon, Dec 10, 2012 at 03:20:37PM +0800, Yang Zhang wrote:
> From: Yang Zhang <yang.z.zhang@Intel.com>
> 
> APIC virtualization is a new feature which can eliminate most of VM exit
> when vcpu handle a interrupt:
> 
> APIC register virtualization:
>         APIC read access doesn't cause APIC-access VM exits.
>         APIC write becomes trap-like.
> 
> Virtual interrupt delivery:
>         Virtual interrupt delivery avoids KVM to inject vAPIC interrupts
>         manually, which is fully taken care of by the hardware.
> 
> Please refer to Intel SDM volume 3, chapter 29 for more details.
> 
> Changes v4 to v5:
>  * Set eoi exit bitmap when an interrupt has notifier registered.
>  * Use request to track ioapic entry's modification.
>  * Rebased on top of KVM upstream.
> 
> Changes v3 to v4:
>  * use one option to control both register virtualization and virtual interrupt
>    delivery.
>  * Update eoi exit bitmap when programing ioapic or programing apic's id/dfr/ldr.
>  * Rebased on top of KVM upstream.
> 
> Changes v2 to v3:
>  * Drop Posted Interrupt patch from v3.
>    According Gleb's suggestion, we will use global vector for all VCPUs as notification
>    event vector. So we will rewrite the Posted Interrupt patch. And resend it later.
>  * Use TMR to set the eoi exiting bitmap. We only want to set eoi exiting bitmap for
>    those interrupt which is level trigger or has notifier in EOI write path. So TMR is
>    enough to distinguish the interrupt trigger mode.
>  * Simplify some code according Gleb's comments.
>  * rebased on top of KVM upstream.
> 
> Changes v1 to v2:
>  * Add Posted Interrupt support in this series patch.
>  * Since there is a notifer hook in vAPIC EOI for PIT interrupt. So always Set PIT
>    interrupt in eoi exit bitmap to force vmexit when EOI to interrupt.
>  * Rebased on top of KVM upstream
> 
> Yang Zhang (3):
>   x86, apicv: add APICv register virtualization support
>   x86, apicv: add virtual interrupt delivery support
>   x86, apicv: add virtual x2apic support
> 
>  arch/ia64/kvm/lapic.h           |    6 ++
>  arch/x86/include/asm/kvm_host.h |    5 +
>  arch/x86/include/asm/vmx.h      |   13 +++
>  arch/x86/kvm/irq.c              |   76 ++++++++++++----
>  arch/x86/kvm/lapic.c            |  114 +++++++++++++++++++++--
>  arch/x86/kvm/lapic.h            |   11 +++
>  arch/x86/kvm/svm.c              |   25 +++++
>  arch/x86/kvm/vmx.c              |  191 +++++++++++++++++++++++++++++++++++++--
>  arch/x86/kvm/x86.c              |   18 +++--
>  include/linux/kvm_host.h        |    2 +
>  virt/kvm/ioapic.c               |   35 +++++++
>  virt/kvm/ioapic.h               |    1 +
>  virt/kvm/irq_comm.c             |   18 ++++
>  13 files changed, 474 insertions(+), 41 deletions(-)
> 
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--
			Gleb.