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Date:   Tue, 26 Mar 2019 12:53:40 +0800
From:   Zhao Yakui <>
Cc:     Zhao Yakui <>
Subject: [RFC PATCH v2 0/3] arch/x86: Add the support of ACRN guest under arch/x86

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

This is the patch set that allows the Linux to work on ACRN hypervisor and it can
work with the following patch set to manage the Linux guest on acrn-hypervisor. It
includes the detection of acrn_hypervisor, upcall notification vector from
hypervisor, hypercall. The hypervisor detection is similar to Xen/VMWARE/Hyperv.
ACRN also uses the upcall notification mechanism similar to that in Xen/Microsoft
HyperV when it needs to send the notification to Linux OS. The hypercall provides
the mechanism that can be used to query/configure the acrn-hypervisor by Linux guest.

Following this patch set, we will send acrn driver part, which provides the interface
that can be used to manage the virtualized CPU/memory/device/interrupt for other guest
OS after the acrn hypervisor is detected.

v1->v2: Change the CONFIG_ACRN to CONFIG_ACRN_GUEST, which makes it easy to
        Remove the export of x86_hyper_acrn.
        Remove the unused API definition of acrn_setup_intr_handler and
        Adjust the order of header file
        Add the declaration of acrn_hv_vector_handler and tracing
definition of acrn_hv_callback_vector.
	Refine the comments for the function of acrn_hypercall0/1/2

Zhao Yakui (3):
  arch/x86: add the support of ACRN guest
  arch/x86/acrn: Use HYPERVISOR_CALLBACK_VECTOR for Acrn upcall vector
  arch/x86/acrn: add hypercall for acrn_guest

 arch/x86/Kconfig                      |  8 ++++
 arch/x86/entry/entry_64.S             |  5 +++
 arch/x86/include/asm/acrn_hypercall.h | 84 +++++++++++++++++++++++++++++++++++
 arch/x86/include/asm/acrnhyper.h      | 19 ++++++++
 arch/x86/include/asm/hardirq.h        |  3 +-
 arch/x86/include/asm/hypervisor.h     |  1 +
 arch/x86/kernel/cpu/Makefile          |  1 +
 arch/x86/kernel/cpu/acrn.c            | 57 ++++++++++++++++++++++++
 arch/x86/kernel/cpu/hypervisor.c      |  4 ++
 arch/x86/kernel/irq.c                 |  3 +-
 10 files changed, 183 insertions(+), 2 deletions(-)
 create mode 100644 arch/x86/include/asm/acrn_hypercall.h
 create mode 100644 arch/x86/include/asm/acrnhyper.h
 create mode 100644 arch/x86/kernel/cpu/acrn.c


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