linux-kernel - [RFC PATCH 00/15] acrn: add the ACRN driver module

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Date:   Fri, 16 Aug 2019 10:25:41 +0800
From:   Zhao Yakui <yakui.zhao@...el.com>
To:     x86@...nel.org, linux-kernel@...r.kernel.org,
        devel@...verdev.osuosl.org
Cc:     Zhao Yakui <yakui.zhao@...el.com>
Subject: [RFC PATCH 00/15] acrn: add the ACRN driver module

ACRN is a flexible, lightweight reference hypervisor, built with real-time
and safety-criticality in mind, optimized to streamline embedded development
through an open source platform. It is built for embedded IOT with small
footprint and real-time features. More details can be found
in https://projectacrn.org/

This is the patch set that add the ACRN driver module on ACRN guest, which
acts as the router to communciate with ACRN hypervisor.
The user-space applications can use the provided ACRN ioctls to
interact with ACRN hypervisor through different hypercalls. After the ACRN
module is loaded, the device file of /dev/acrn_hsm can be accessed in
user-space. It includes the management of virtualized CPU/memory/
device/interrupt/MMIO emulation for other ACRN guest. 
 
The first three patches are the changes under x86/acrn, which adds the
required APIs for the driver and reports the X2APIC caps. 
The remaining patches add the ACRN driver module, which accepts the ioctl
from user-space and then communicate with the low-level ACRN hypervisor
by using hypercall.


Zhao Yakui (15):
  x86/acrn: Report X2APIC for ACRN guest
  x86/acrn: Add two APIs to add/remove driver-specific upcall ISR handler
  x86/acrn: Add hypercall for ACRN guest
  drivers/acrn: add the basic framework of acrn char device driver
  drivers/acrn: add driver-specific hypercall for ACRN_HSM
  drivers/acrn: add the support of querying ACRN api version
  drivers/acrn: add acrn vm/vcpu management for ACRN_HSM char device
  drivers/acrn: add VM memory management for ACRN char device
  drivers/acrn: add passthrough device support
  drivers/acrn: add interrupt injection support
  drivers/acrn: add the support of handling emulated ioreq
  drivers/acrn: add driver-specific IRQ handle to dispatch IO_REQ request
  drivers/acrn: add service to obtain Power data transition
  drivers/acrn: add the support of irqfd and eventfd
  drivers/acrn: add the support of offline SOS cpu

 arch/x86/include/asm/acrn.h               |  57 ++
 arch/x86/kernel/cpu/acrn.c                |  20 +-
 drivers/staging/Kconfig                   |   2 +
 drivers/staging/Makefile                  |   1 +
 drivers/staging/acrn/Kconfig              |  18 +
 drivers/staging/acrn/Makefile             |   9 +
 drivers/staging/acrn/acrn_dev.c           | 727 +++++++++++++++++++++++
 drivers/staging/acrn/acrn_drv_internal.h  | 186 ++++++
 drivers/staging/acrn/acrn_hv_defs.h       |  65 +++
 drivers/staging/acrn/acrn_hypercall.c     | 136 +++++
 drivers/staging/acrn/acrn_hypercall.h     | 132 +++++
 drivers/staging/acrn/acrn_ioeventfd.c     | 407 +++++++++++++
 drivers/staging/acrn/acrn_ioreq.c         | 937 ++++++++++++++++++++++++++++++
 drivers/staging/acrn/acrn_irqfd.c         | 339 +++++++++++
 drivers/staging/acrn/acrn_mm.c            | 227 ++++++++
 drivers/staging/acrn/acrn_mm_hugetlb.c    | 281 +++++++++
 drivers/staging/acrn/acrn_vm_mngt.c       | 116 ++++
 include/linux/acrn/acrn_drv.h             | 200 +++++++
 include/uapi/linux/acrn/acrn_common_def.h | 201 +++++++
 include/uapi/linux/acrn/acrn_ioctl_defs.h | 345 +++++++++++
 20 files changed, 4400 insertions(+), 6 deletions(-)
 create mode 100644 drivers/staging/acrn/Kconfig
 create mode 100644 drivers/staging/acrn/Makefile
 create mode 100644 drivers/staging/acrn/acrn_dev.c
 create mode 100644 drivers/staging/acrn/acrn_drv_internal.h
 create mode 100644 drivers/staging/acrn/acrn_hv_defs.h
 create mode 100644 drivers/staging/acrn/acrn_hypercall.c
 create mode 100644 drivers/staging/acrn/acrn_hypercall.h
 create mode 100644 drivers/staging/acrn/acrn_ioeventfd.c
 create mode 100644 drivers/staging/acrn/acrn_ioreq.c
 create mode 100644 drivers/staging/acrn/acrn_irqfd.c
 create mode 100644 drivers/staging/acrn/acrn_mm.c
 create mode 100644 drivers/staging/acrn/acrn_mm_hugetlb.c
 create mode 100644 drivers/staging/acrn/acrn_vm_mngt.c
 create mode 100644 include/linux/acrn/acrn_drv.h
 create mode 100644 include/uapi/linux/acrn/acrn_common_def.h
 create mode 100644 include/uapi/linux/acrn/acrn_ioctl_defs.h

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