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Message-ID: <735A6D65-99B3-40BE-A842-F37D8D7D5D5B@freescale.com>
Date: Wed, 22 Jun 2011 06:41:41 -0500
From: Kumar Gala <kumar.gala@...escale.com>
To: Timur Tabi <timur@...escale.com>
CC: <benh@...nel.crashing.org>, <greg@...ah.com>, <akpm@...nel.org>,
<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
<linux-console@...r.kernel.org>
Subject: Re: [PATCH 3/7] powerpc: introduce the ePAPR embedded hypervisor vmpic driver
On May 19, 2011, at 8:54 AM, Timur Tabi wrote:
> From: Ashish Kalra <ashish.kalra@...escale.com>
>
> The Freescale ePAPR reference hypervisor provides interrupt controller services
> via a hypercall interface, instead of emulating the MPIC controller. This is
> called the VMPIC.
>
> The ePAPR "virtual interrupt controller" provides interrupt controller services
> for external interrupts. External interrupts received by a partition can come
> from two sources:
>
> - Hardware interrupts - hardware interrupts come from external
> interrupt lines or on-chip I/O devices.
> - Virtual interrupts - virtual interrupts are generated by the hypervisor
> as part of some hypervisor service or hypervisor-created virtual device.
>
> Both types of interrupts are processed using the same programming model and
> same set of hypercalls.
>
> Signed-off-by: Ashish Kalra <ashish.kalra@...escale.com>
> Signed-off-by: Timur Tabi <timur@...escale.com>
> ---
> arch/powerpc/include/asm/ehv_pic.h | 40 +++++
> arch/powerpc/platforms/Kconfig | 4 +
> arch/powerpc/sysdev/Makefile | 1 +
> arch/powerpc/sysdev/ehv_pic.c | 302 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 347 insertions(+), 0 deletions(-)
> create mode 100644 arch/powerpc/include/asm/ehv_pic.h
> create mode 100644 arch/powerpc/sysdev/ehv_pic.c
applied to next
- k
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