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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>
19 lines
293 B
C
19 lines
293 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ACRN_HSM_DRV_H
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#define __ACRN_HSM_DRV_H
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#include <linux/types.h>
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#define ACRN_INVALID_VMID (0xffffU)
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/**
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* struct acrn_vm - Properties of ACRN User VM.
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* @vmid: User VM ID
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*/
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struct acrn_vm {
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u16 vmid;
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};
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#endif /* __ACRN_HSM_DRV_H */
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