Re: [Xen-devel] [PATCH v3 0/5] Add posted interrupt supporting

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 17/04/2013 15:50, "Yang Zhang" <yang.z.zhang@xxxxxxxxx> wrote:

> From: Yang Zhang <yang.z.zhang@xxxxxxxxx>

I continue to be happy with this series, needs Ack/commit from Jan though of
course, who picked up on good stuff last time round!

 -- Keir

> The follwoing patches are adding the Posted Interrupt supporting to Xen:
> Posted Interrupt allows vAPIC 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
> 
> Refer to Intel SDM vol3, 29.6  to get more information.
> 
> Changes from v2 to v3:
> * Remove unused global vector POSTED_INTR_VECTOR.
> * Use bitmap to define pi_desc->pir.
> * Refine vmx_sync_pir_to_irr() to use bitmap related operations.
> * Minor adjustments according Jan's comments.
> 
> Changes from v1 to v2:
> * Allocate posted interrupt vector dynamically.
> * Use vlapic_set_vector() to sync pir to irr.
> * Refine vlapic_set_irq() and call it to deliver virtual interrupt.
> * Rebase on top of Xen.
> 
> Yang Zhang (5):
>   VMX: Detect posted interrupt capability
>   VMX: Turn on posted interrupt bit in vmcs
>   VMX: Add posted interrupt supporting
>   Call vlapic_set_irq() to delivery virtual interrupt
>   VMX: Use posted interrupt to deliver virutal interrupt
> 
>  xen/arch/x86/hvm/vioapic.c         |    3 +-
>  xen/arch/x86/hvm/vlapic.c          |   38 +++++++-------------
>  xen/arch/x86/hvm/vmsi.c            |    3 +-
>  xen/arch/x86/hvm/vmx/vmcs.c        |   20 ++++++++++-
>  xen/arch/x86/hvm/vmx/vmx.c         |   70
> ++++++++++++++++++++++++++++++++++++
>  xen/include/asm-x86/bitops.h       |   10 +++++
>  xen/include/asm-x86/hvm/hvm.h      |    2 +
>  xen/include/asm-x86/hvm/vlapic.h   |   19 +++++++++-
>  xen/include/asm-x86/hvm/vmx/vmcs.h |   14 +++++++
>  xen/include/asm-x86/hvm/vmx/vmx.h  |   25 +++++++++++++
>  10 files changed, 173 insertions(+), 31 deletions(-)
> 



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel