linux-kernel - RE: [v4 0/3] prerequisite changes for VT-d posted-interrupts

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Date:	Thu, 7 May 2015 02:05:28 +0000
From:	"Wu, Feng" <feng.wu@...el.com>
To:	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"jiang.liu@...ux.intel.com" <jiang.liu@...ux.intel.com>,
	"Wu, Feng" <feng.wu@...el.com>
Subject: RE: [v4 0/3] prerequisite changes for VT-d posted-interrupts

Hi Thomas,

Ping..

Since Liu Jiang's IRQ work has already been in the tip tree for a while, I think
It is time to send this series again based on the x86/apic branch of tip tree.
It would be very appreciated if you can have a look at this series!

Thanks,
Feng

> -----Original Message-----
> From: Wu, Feng
> Sent: Thursday, April 30, 2015 3:07 PM
> To: tglx@...utronix.de; mingo@...hat.com; hpa@...or.com
> Cc: linux-kernel@...r.kernel.org; jiang.liu@...ux.intel.com; Wu, Feng
> Subject: [v4 0/3] prerequisite changes for VT-d posted-interrupts
> 
> 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-technolog
> y/vt-directed-io-spec.html
> 
> This series implement some prerequisite parts for VT-d posted-interrupts. It
> was part of
> http://thread.gmane.org/gmane.linux.kernel.iommu/7708. To make things
> clear, I will divide
> the whole series which contain multiple components into three parts:
> - prerequisite changes (included in this series)
> - IOMMU part (v4 was reviewed, some comments need to be addressed)
> - KVM and VFIO parts (will send out this part once the first two parts are
> accepted)
> 
> This series is rebased on the x86-apic branch of tip tree.
> 
> Feng Wu (3):
>   genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a
>     VCPU
>   x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller
>   x86, irq: Define a global vector for VT-d Posted-Interrupts
> 
>  arch/x86/include/asm/entry_arch.h  |  2 ++
>  arch/x86/include/asm/hardirq.h     |  1 +
>  arch/x86/include/asm/hw_irq.h      |  2 ++
>  arch/x86/include/asm/irq_vectors.h |  1 +
>  arch/x86/kernel/apic/msi.c         |  1 +
>  arch/x86/kernel/entry_64.S         |  2 ++
>  arch/x86/kernel/irq.c              | 27 +++++++++++++++++++++++++++
>  arch/x86/kernel/irqinit.c          |  2 ++
>  include/linux/irq.h                |  6 ++++++
>  kernel/irq/chip.c                  | 14 ++++++++++++++
>  kernel/irq/manage.c                | 20 ++++++++++++++++++++
>  11 files changed, 78 insertions(+)
> 
> --
> 2.1.0

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