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https://github.com/edk2-porting/linux-next.git
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a2c06ee2fe
This reverts commit 5a893fc28f.
This causes a use after free in the ttm free alloc pages path,
when it tries to get the be after the be has been destroyed.
Signed-off-by: Dave Airlie <airlied@redhat.com>
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
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* Copyright (c) Red Hat Inc.
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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, sub license,
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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
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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 NON-INFRINGEMENT. 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
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie <airlied@redhat.com>
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* Jerome Glisse <jglisse@redhat.com>
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*/
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#ifndef TTM_PAGE_ALLOC
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#define TTM_PAGE_ALLOC
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#include "ttm_bo_driver.h"
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#include "ttm_memory.h"
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/**
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* Get count number of pages from pool to pages list.
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*
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* @pages: heado of empty linked list where pages are filled.
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* @flags: ttm flags for page allocation.
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* @cstate: ttm caching state for the page.
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* @count: number of pages to allocate.
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* @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
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*/
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int ttm_get_pages(struct list_head *pages,
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int flags,
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enum ttm_caching_state cstate,
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unsigned count,
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dma_addr_t *dma_address);
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/**
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* Put linked list of pages to pool.
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*
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* @pages: list of pages to free.
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* @page_count: number of pages in the list. Zero can be passed for unknown
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* count.
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* @flags: ttm flags for page allocation.
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* @cstate: ttm caching state.
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* @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
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*/
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void ttm_put_pages(struct list_head *pages,
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unsigned page_count,
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int flags,
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enum ttm_caching_state cstate,
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dma_addr_t *dma_address);
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/**
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* Initialize pool allocator.
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*/
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int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages);
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/**
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* Free pool allocator.
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*/
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void ttm_page_alloc_fini(void);
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/**
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* Output the state of pools to debugfs file
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*/
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extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
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#endif
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