cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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page_track.h (2188B)

      1/*
      2 * Copyright(c) 2011-2017 Intel Corporation. All rights reserved.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice (including the next
     12 * paragraph) shall be included in all copies or substantial portions of the
     13 * Software.
     14 *
     15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     21 * SOFTWARE.
     22 *
     23 */
     24
     25#ifndef _GVT_PAGE_TRACK_H_
     26#define _GVT_PAGE_TRACK_H_
     27
     28#include <linux/types.h>
     29
     30struct intel_vgpu;
     31struct intel_vgpu_page_track;
     32
     33typedef int (*gvt_page_track_handler_t)(
     34			struct intel_vgpu_page_track *page_track,
     35			u64 gpa, void *data, int bytes);
     36
     37/* Track record for a write-protected guest page. */
     38struct intel_vgpu_page_track {
     39	gvt_page_track_handler_t handler;
     40	bool tracked;
     41	void *priv_data;
     42};
     43
     44struct intel_vgpu_page_track *intel_vgpu_find_page_track(
     45		struct intel_vgpu *vgpu, unsigned long gfn);
     46
     47int intel_vgpu_register_page_track(struct intel_vgpu *vgpu,
     48		unsigned long gfn, gvt_page_track_handler_t handler,
     49		void *priv);
     50void intel_vgpu_unregister_page_track(struct intel_vgpu *vgpu,
     51		unsigned long gfn);
     52
     53int intel_vgpu_enable_page_track(struct intel_vgpu *vgpu, unsigned long gfn);
     54int intel_vgpu_disable_page_track(struct intel_vgpu *vgpu, unsigned long gfn);
     55
     56int intel_vgpu_page_track_handler(struct intel_vgpu *vgpu, u64 gpa,
     57		void *data, unsigned int bytes);
     58
     59#endif