Commit 666834c4 authored Feb 07, 2021 by Shuo Liu Committed by Greg Kroah-Hartman Feb 09, 2021

virt: acrn: Introduce ACRN HSM basic driver



ACRN Hypervisor Service Module (HSM) is a kernel module in Service VM
which communicates with ACRN userspace through ioctls and talks to ACRN
Hypervisor through hypercalls.

Add a basic HSM driver which allows Service VM userspace to communicate
with ACRN. The following patches will add more ioctls, guest VM memory
mapping caching, I/O request processing, ioeventfd and irqfd into this
module. HSM exports a char device interface (/dev/acrn_hsm) to userspace.

Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Yu Wang <yu1.wang@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Link: https://lore.kernel.org/r/20210207031040.49576-6-shuo.a.liu@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 8a0a8719

MAINTAINERS

+1 −0

Original line number	Diff line number	Diff line
		@@ -442,6 +442,7 @@ L: acrn-dev@lists.projectacrn.org
		S: Supported
		W: https://projectacrn.org
		F: Documentation/virt/acrn/
		F: drivers/virt/acrn/

		AD1889 ALSA SOUND DRIVER
		L: linux-parisc@vger.kernel.org

drivers/virt/Kconfig

+2 −0

Original line number	Diff line number	Diff line
		@@ -34,4 +34,6 @@ config FSL_HV_MANAGER
		source "drivers/virt/vboxguest/Kconfig"

		source "drivers/virt/nitro_enclaves/Kconfig"

		source "drivers/virt/acrn/Kconfig"
		endif

drivers/virt/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -7,3 +7,4 @@ obj-$(CONFIG_FSL_HV_MANAGER) += fsl_hypervisor.o
		obj-y += vboxguest/

		obj-$(CONFIG_NITRO_ENCLAVES) += nitro_enclaves/
		obj-$(CONFIG_ACRN_HSM) += acrn/

drivers/virt/acrn/Kconfig

0 → 100644

+14 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0
		config ACRN_HSM
		tristate "ACRN Hypervisor Service Module"
		depends on ACRN_GUEST
		help
		ACRN Hypervisor Service Module (HSM) is a kernel module which
		communicates with ACRN userspace through ioctls and talks to
		the ACRN Hypervisor through hypercalls. HSM will only run in
		a privileged management VM, called Service VM, to manage User
		VMs and do I/O emulation. Not required for simply running
		under ACRN as a User VM.

		To compile as a module, choose M, the module will be called
		acrn. If unsure, say N.

drivers/virt/acrn/Makefile

0 → 100644

+3 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0
		obj-$(CONFIG_ACRN_HSM) := acrn.o
		acrn-y := hsm.o