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 <redacted>
=20
The Freescale ePAPR reference hypervisor provides interrupt controller =

services

via a hypercall interface, instead of emulating the MPIC controller.  =

This is

called the VMPIC.
=20
The ePAPR "virtual interrupt controller" provides interrupt controller =

services

for external interrupts.  External interrupts received by a partition =

can come

from two sources:
=20
 - 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.

=20
Both types of interrupts are processed using the same programming =

model and

same set of hypercalls.
=20
Signed-off-by: Ashish Kalra <redacted>
Signed-off-by: Timur Tabi <redacted>
---
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=