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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cc753fbe1a
GVT may receive partial write on one guest PTE update. Validate gfn not to translate incomplete gfn. This avoids some unnecessary error messages incurred by the incomplete gfn translating. Also fix the bug that the whole PPGTT shadow page update is aborted on any invalid gfn entry. gfn validation relys on hypervisor's help. Add one MPT module function to provide the function. Signed-off-by: Hang Yuan <hang.yuan@intel.com> Reviewed-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
68 lines
2.7 KiB
C
68 lines
2.7 KiB
C
/*
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* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Eddie Dong <eddie.dong@intel.com>
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* Dexuan Cui
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* Jike Song <jike.song@intel.com>
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*
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* Contributors:
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* Zhi Wang <zhi.a.wang@intel.com>
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*
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*/
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#ifndef _GVT_HYPERCALL_H_
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#define _GVT_HYPERCALL_H_
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/*
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* Specific GVT-g MPT modules function collections. Currently GVT-g supports
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* both Xen and KVM by providing dedicated hypervisor-related MPT modules.
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*/
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struct intel_gvt_mpt {
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int (*host_init)(struct device *dev, void *gvt, const void *ops);
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void (*host_exit)(struct device *dev, void *gvt);
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int (*attach_vgpu)(void *vgpu, unsigned long *handle);
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void (*detach_vgpu)(unsigned long handle);
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int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
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unsigned long (*from_virt_to_mfn)(void *p);
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int (*set_wp_page)(unsigned long handle, u64 gfn);
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int (*unset_wp_page)(unsigned long handle, u64 gfn);
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int (*read_gpa)(unsigned long handle, unsigned long gpa, void *buf,
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unsigned long len);
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int (*write_gpa)(unsigned long handle, unsigned long gpa, void *buf,
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unsigned long len);
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unsigned long (*gfn_to_mfn)(unsigned long handle, unsigned long gfn);
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int (*map_gfn_to_mfn)(unsigned long handle, unsigned long gfn,
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unsigned long mfn, unsigned int nr, bool map);
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int (*set_trap_area)(unsigned long handle, u64 start, u64 end,
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bool map);
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int (*set_opregion)(void *vgpu);
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int (*get_vfio_device)(void *vgpu);
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void (*put_vfio_device)(void *vgpu);
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bool (*is_valid_gfn)(unsigned long handle, unsigned long gfn);
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};
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extern struct intel_gvt_mpt xengt_mpt;
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extern struct intel_gvt_mpt kvmgt_mpt;
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#endif /* _GVT_HYPERCALL_H_ */
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