Re: [Xen-devel] [RFC v1 00/15] Add VT-d Posted-Interrupts support

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Mar 25, 2015 at 08:31:42PM +0800, Feng Wu wrote:
> VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
> With VT-d Posted-Interrupts enabled, external interrupts from
> direct-assigned devices can be delivered to guests without VMM
> intervention when guest is running in non-root mode.
> 
> You can find the VT-d Posted-Interrtups Spec. in the following URL:
> http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/vt-directed-io-spec.html
> 
> This patch set follow the following design:
> http://article.gmane.org/gmane.comp.emulators.xen.devel/236476

Would it be possible to put the design in xen/docs/ directory?

Thanks!

> 
> Feng Wu (15):
>   iommu: Add iommu_intpost to control VT-d Posted-Interrupts feature
>   vt-d: VT-d Posted-Interrupts feature detection
>   vmx: Extend struct pi_desc to support VT-d Posted-Interrupts
>   vmx: Add some helper functions for Posted-Interrupts
>   vmx: Initialize VT-d Posted-Interrupts Descriptor
>   vt-d: Extend struct iremap_entry to support VT-d Posted-Interrupts
>   vt-d: Add API to update IRTE when VT-d PI is used
>   Update IRTE according to guest interrupt config changes
>   Add a new per-vCPU tasklet to wakeup the blocked vCPU
>   vmx: Define two per-cpu variants
>   vmx: Add a global wake-up vector for VT-d Posted-Interrupts
>   vmx: Properly handle notification event when vCPU is running
>   Update Posted-Interrupts Descriptor during vCPU scheduling
>   Suppress posting interrupts when 'SN' is set
>   Add a command line parameter for VT-d posted-interrupts
> 
>  xen/arch/x86/hvm/vmx/vmcs.c            |   6 ++
>  xen/arch/x86/hvm/vmx/vmx.c             | 185 
> ++++++++++++++++++++++++++++++++-
>  xen/common/domain.c                    |  11 ++
>  xen/common/schedule.c                  |   3 +
>  xen/drivers/passthrough/io.c           |  77 +++++++++++++-
>  xen/drivers/passthrough/iommu.c        |  17 ++-
>  xen/drivers/passthrough/vtd/intremap.c |  83 +++++++++++++++
>  xen/drivers/passthrough/vtd/iommu.c    |  15 ++-
>  xen/drivers/passthrough/vtd/iommu.h    |  23 ++++
>  xen/include/asm-x86/hvm/hvm.h          |   1 +
>  xen/include/asm-x86/hvm/vmx/vmcs.h     |  16 ++-
>  xen/include/asm-x86/hvm/vmx/vmx.h      |  49 ++++++++-
>  xen/include/asm-x86/iommu.h            |   2 +
>  xen/include/xen/iommu.h                |   2 +-
>  xen/include/xen/sched.h                |   5 +
>  15 files changed, 485 insertions(+), 10 deletions(-)
> 
> -- 
> 2.1.0
> 
> 
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