mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
f95f51a4c3
Add a per-process MMU notifier lock for processing notifiers from userptrs. Use that lock to properly synchronize page table updates with MMU notifiers. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Xiaogang Chen<Xiaogang.Chen@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
53 lines
2.1 KiB
C
53 lines
2.1 KiB
C
/*
|
|
* Copyright 2017 Advanced Micro Devices, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Authors: Christian König
|
|
*/
|
|
#ifndef __AMDGPU_MN_H__
|
|
#define __AMDGPU_MN_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/hmm.h>
|
|
#include <linux/rwsem.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/interval_tree.h>
|
|
#include <linux/mmu_notifier.h>
|
|
|
|
int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
|
|
uint64_t start, uint64_t npages, bool readonly,
|
|
void *owner, struct page **pages,
|
|
struct hmm_range **phmm_range);
|
|
bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
|
|
|
|
#if defined(CONFIG_HMM_MIRROR)
|
|
int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);
|
|
void amdgpu_hmm_unregister(struct amdgpu_bo *bo);
|
|
#else
|
|
static inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr)
|
|
{
|
|
DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
|
|
"add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
|
|
return -ENODEV;
|
|
}
|
|
static inline void amdgpu_hmm_unregister(struct amdgpu_bo *bo) {}
|
|
#endif
|
|
|
|
#endif
|