[radeon-alex:amd-mainline-dkms-5.2 2158/2834] drivers/gpu/drm/ttm/ttm_bo_vm.c:128:6: error: 'vma' undeclared

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tree:   git://people.freedesktop.org/~agd5f/linux.git amd-mainline-dkms-5.2
head:   a48b0cc1cdf3900e3e73801f9de64afbb70dc193
commit: 607b18ba116eb1642b01fb9d38a164cc492e9044 [2158/2834] drm/amdkcl: Test whether vm_fault->{address/vma} is available
config: x86_64-randconfig-a004-201944 (attached as .config)
compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
reproduce:
        git checkout 607b18ba116eb1642b01fb9d38a164cc492e9044
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   In file included from include/linux/kobject.h:23:0,
                    from include/linux/device.h:16,
                    from include/drm/drm_print.h:32,
                    from include/drm/drm_mm.h:49,
                    from include/drm/drm_vma_manager.h:26,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/linux/kref.h:36:28: note: previous definition of 'kref_read' was here
    static inline unsigned int kref_read(const struct kref *kref)
                               ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:11:0,
                    from <command-line>:0:
   include/kcl/kcl_kref.h: In function 'kref_read':
   include/kcl/kcl_kref.h:9:21: error: passing argument 1 of 'atomic_read' from incompatible pointer type [-Werror=incompatible-pointer-types]
     return atomic_read(&kref->refcount);
                        ^
   In file included from arch/x86/include/asm/atomic.h:265:0,
                    from include/linux/atomic.h:7,
                    from include/linux/rcupdate.h:25,
                    from include/linux/rbtree.h:34,
                    from include/drm/drm_mm.h:41,
                    from include/drm/drm_vma_manager.h:26,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/asm-generic/atomic-instrumented.h:24:1: note: expected 'const atomic_t * {aka const struct <anonymous> *}' but argument is of type 'const refcount_t * {aka const struct refcount_struct *}'
    atomic_read(const atomic_t *v)
    ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:12:0,
                    from <command-line>:0:
   include/kcl/kcl_mm_types.h: At top level:
   include/kcl/kcl_mm_types.h:10:3: error: conflicting types for 'pfn_t'
    } pfn_t;
      ^
   In file included from include/asm-generic/memory_model.h:5:0,
                    from arch/x86/include/asm/page.h:76,
                    from arch/x86/include/asm/thread_info.h:12,
                    from include/linux/thread_info.h:38,
                    from arch/x86/include/asm/preempt.h:7,
                    from include/linux/preempt.h:78,
                    from include/linux/rcupdate.h:27,
                    from include/linux/rbtree.h:34,
                    from include/drm/drm_mm.h:41,
                    from include/drm/drm_vma_manager.h:26,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/linux/pfn.h:15:3: note: previous declaration of 'pfn_t' was here
    } pfn_t;
      ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:12:0,
                    from <command-line>:0:
   include/kcl/kcl_mm_types.h:33:13: error: conflicting types for 'vm_fault_t'
    typedef int vm_fault_t;
                ^
   In file included from include/drm/drm_mm.h:43:0,
                    from include/drm/drm_vma_manager.h:26,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/linux/mm_types.h:631:32: note: previous declaration of 'vm_fault_t' was here
    typedef __bitwise unsigned int vm_fault_t;
                                   ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:12:0,
                    from <command-line>:0:
   include/kcl/kcl_mm_types.h:35:26: error: conflicting types for 'vmf_insert_mixed'
    static inline vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma,
                             ^
   In file included from include/drm/drm_vma_manager.h:27:0,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/linux/mm.h:2587:12: note: previous declaration of 'vmf_insert_mixed' was here
    vm_fault_t vmf_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
               ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:12:0,
                    from <command-line>:0:
   include/kcl/kcl_mm_types.h: In function 'vmf_insert_mixed':
   include/kcl/kcl_mm_types.h:41:8: error: implicit declaration of function 'vm_insert_mixed' [-Werror=implicit-function-declaration]
     err = vm_insert_mixed(vma, addr, pfn_t_to_pfn(pfn));
           ^
   include/kcl/kcl_mm_types.h: At top level:
   include/kcl/kcl_mm_types.h:53:26: error: conflicting types for 'vmf_insert_pfn'
    static inline vm_fault_t vmf_insert_pfn(struct vm_area_struct *vma,
                             ^
   In file included from include/drm/drm_vma_manager.h:27:0,
                    from include/kcl/kcl_drm_vma_manager.h:8,
                    from drivers/gpu/drm/ttm/backport/backport.h:5,
                    from <command-line>:0:
   include/linux/mm.h:2583:12: note: previous declaration of 'vmf_insert_pfn' was here
    vm_fault_t vmf_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
               ^
   In file included from drivers/gpu/drm/ttm/backport/backport.h:12:0,
                    from <command-line>:0:
   include/kcl/kcl_mm_types.h: In function 'vmf_insert_pfn':
   include/kcl/kcl_mm_types.h:56:13: error: implicit declaration of function 'vm_insert_pfn' [-Werror=implicit-function-declaration]
      int err = vm_insert_pfn(vma, addr, pfn);
                ^
   drivers/gpu/drm/ttm/ttm_bo_vm.c: In function 'ttm_bo_vm_fault':
>> drivers/gpu/drm/ttm/ttm_bo_vm.c:128:6: error: 'vma' undeclared (first use in this function)
         vma->vm_private_data;
         ^
   drivers/gpu/drm/ttm/ttm_bo_vm.c:128:6: note: each undeclared identifier is reported only once for each function it appears in
   drivers/gpu/drm/ttm/ttm_bo_vm.c:139:44: error: 'struct vm_fault' has no member named 'virtual_address'
     unsigned long address = (unsigned long)vmf->virtual_address;
                                               ^
   drivers/gpu/drm/ttm/ttm_bo_vm.c: At top level:
   drivers/gpu/drm/ttm/ttm_bo_vm.c:427:11: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .fault = ttm_bo_vm_fault,
              ^
   drivers/gpu/drm/ttm/ttm_bo_vm.c:427:11: note: (near initialization for 'ttm_bo_vm_ops.fault')
   cc1: some warnings being treated as errors

vim +/vma +128 drivers/gpu/drm/ttm/ttm_bo_vm.c

cbe12e74ee4e29 Thomas Hellstrom    2013-10-09  106  
c67fa6edc8b11a Tan Xiaojun         2017-12-25  107  static unsigned long ttm_bo_io_mem_pfn(struct ttm_buffer_object *bo,
c67fa6edc8b11a Tan Xiaojun         2017-12-25  108  				       unsigned long page_offset)
c67fa6edc8b11a Tan Xiaojun         2017-12-25  109  {
c67fa6edc8b11a Tan Xiaojun         2017-12-25  110  	struct ttm_bo_device *bdev = bo->bdev;
c67fa6edc8b11a Tan Xiaojun         2017-12-25  111  
c67fa6edc8b11a Tan Xiaojun         2017-12-25  112  	if (bdev->driver->io_mem_pfn)
c67fa6edc8b11a Tan Xiaojun         2017-12-25  113  		return bdev->driver->io_mem_pfn(bo, page_offset);
c67fa6edc8b11a Tan Xiaojun         2017-12-25  114  
e83bf4adf54ad3 Tan Xiaojun         2017-12-25  115  	return ((bo->mem.bus.base + bo->mem.bus.offset) >> PAGE_SHIFT)
e83bf4adf54ad3 Tan Xiaojun         2017-12-25  116  		+ page_offset;
c67fa6edc8b11a Tan Xiaojun         2017-12-25  117  }
c502e3166db12d Anatoli Antonovitch 2019-06-26  118  #if defined(HAVE_2ARGS_VIRTUAL_MM_FAULT_FUNCTION)
2880a38f4d3cf2 Evan Quan           2017-05-12  119  static vm_fault_t ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
2880a38f4d3cf2 Evan Quan           2017-05-12  120  #else
4daa4fba3a3899 Souptick Joarder    2018-06-02  121  static vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf)
2880a38f4d3cf2 Evan Quan           2017-05-12  122  #endif
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  123  {
607b18ba116eb1 Chengming Gui       2019-09-02  124  #if defined(HAVE_VM_FAULT_ADDRESS_VMA)
11bac80004499e Dave Jiang          2017-02-24  125  	struct vm_area_struct *vma = vmf->vma;
2880a38f4d3cf2 Evan Quan           2017-05-12  126  #endif
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  127  	struct ttm_buffer_object *bo = (struct ttm_buffer_object *)
ba4e7d973dd09b Thomas Hellstrom    2009-06-10 @128  	    vma->vm_private_data;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  129  	struct ttm_bo_device *bdev = bo->bdev;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  130  	unsigned long page_offset;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  131  	unsigned long page_last;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  132  	unsigned long pfn;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  133  	struct ttm_tt *ttm = NULL;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  134  	struct page *page;
4daa4fba3a3899 Souptick Joarder    2018-06-02  135  	int err;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  136  	int i;
4daa4fba3a3899 Souptick Joarder    2018-06-02  137  	vm_fault_t ret = VM_FAULT_NOPAGE;
607b18ba116eb1 Chengming Gui       2019-09-02  138  #ifndef HAVE_VM_FAULT_ADDRESS_VMA
2880a38f4d3cf2 Evan Quan           2017-05-12  139  	unsigned long address = (unsigned long)vmf->virtual_address;
2880a38f4d3cf2 Evan Quan           2017-05-12  140  #else
1a29d85eb0f19b Jan Kara            2016-12-14  141  	unsigned long address = vmf->address;
2880a38f4d3cf2 Evan Quan           2017-05-12  142  #endif
eba67093f53532 Thomas Hellstrom    2010-11-11  143  	struct ttm_mem_type_manager *man =
eba67093f53532 Thomas Hellstrom    2010-11-11  144  		&bdev->man[bo->mem.mem_type];
3943875e7b73fd Thomas Hellstrom    2013-11-06  145  	struct vm_area_struct cvma;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  146  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  147  	/*
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  148  	 * Work around locking order reversal in fault / nopfn
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  149  	 * between mmap_sem and bo_reserve: Perform a trylock operation
c58f009e01c918 Thomas Hellstrom    2013-11-14  150  	 * for reserve, and if it fails, retry the fault after waiting
c58f009e01c918 Thomas Hellstrom    2013-11-14  151  	 * for the buffer to become unreserved.
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  152  	 */
7e18f7a415538c Evan Quan           2019-02-18  153  	if (unlikely(!kcl_reservation_object_trylock(bo->resv))) {
c58f009e01c918 Thomas Hellstrom    2013-11-14  154  		if (vmf->flags & FAULT_FLAG_ALLOW_RETRY) {
0251eb85af434f Chengming Gui       2019-08-28  155  #ifdef FAULT_FLAG_RETRY_NOWAIT
c58f009e01c918 Thomas Hellstrom    2013-11-14  156  			if (!(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) {
8129fdad387ae3 Thomas Zimmermann   2018-06-21  157  				ttm_bo_get(bo);
2880a38f4d3cf2 Evan Quan           2017-05-12  158  				up_read(&vma->vm_mm->mmap_sem);
c58f009e01c918 Thomas Hellstrom    2013-11-14  159  				(void) ttm_bo_wait_unreserved(bo);
f44907593d746d Thomas Zimmermann   2018-06-21  160  				ttm_bo_put(bo);
c58f009e01c918 Thomas Hellstrom    2013-11-14  161  			}
2880a38f4d3cf2 Evan Quan           2017-05-12  162  #else
2880a38f4d3cf2 Evan Quan           2017-05-12  163  			up_read(&vma->vm_mm->mmap_sem);
2880a38f4d3cf2 Evan Quan           2017-05-12  164  #endif
c58f009e01c918 Thomas Hellstrom    2013-11-14  165  
c58f009e01c918 Thomas Hellstrom    2013-11-14  166  			return VM_FAULT_RETRY;
c58f009e01c918 Thomas Hellstrom    2013-11-14  167  		}
c58f009e01c918 Thomas Hellstrom    2013-11-14  168  
c58f009e01c918 Thomas Hellstrom    2013-11-14  169  		/*
c58f009e01c918 Thomas Hellstrom    2013-11-14  170  		 * If we'd want to change locking order to
c58f009e01c918 Thomas Hellstrom    2013-11-14  171  		 * mmap_sem -> bo::reserve, we'd use a blocking reserve here
c58f009e01c918 Thomas Hellstrom    2013-11-14  172  		 * instead of retrying the fault...
c58f009e01c918 Thomas Hellstrom    2013-11-14  173  		 */
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  174  		return VM_FAULT_NOPAGE;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  175  	}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  176  
667a50db0477d4 Thomas Hellstrom    2014-01-03  177  	/*
667a50db0477d4 Thomas Hellstrom    2014-01-03  178  	 * Refuse to fault imported pages. This should be handled
667a50db0477d4 Thomas Hellstrom    2014-01-03  179  	 * (if at all) by redirecting mmap to the exporter.
667a50db0477d4 Thomas Hellstrom    2014-01-03  180  	 */
667a50db0477d4 Thomas Hellstrom    2014-01-03  181  	if (bo->ttm && (bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  182  		ret = VM_FAULT_SIGBUS;
667a50db0477d4 Thomas Hellstrom    2014-01-03  183  		goto out_unlock;
667a50db0477d4 Thomas Hellstrom    2014-01-03  184  	}
667a50db0477d4 Thomas Hellstrom    2014-01-03  185  
82c5da6bf8b55a Jerome Glisse       2010-04-09  186  	if (bdev->driver->fault_reserve_notify) {
5d50fcbda7b0ac Christian König     2019-01-11  187  		struct dma_fence *moving = dma_fence_get(bo->moving);
5d50fcbda7b0ac Christian König     2019-01-11  188  
4daa4fba3a3899 Souptick Joarder    2018-06-02  189  		err = bdev->driver->fault_reserve_notify(bo);
4daa4fba3a3899 Souptick Joarder    2018-06-02  190  		switch (err) {
82c5da6bf8b55a Jerome Glisse       2010-04-09  191  		case 0:
82c5da6bf8b55a Jerome Glisse       2010-04-09  192  			break;
82c5da6bf8b55a Jerome Glisse       2010-04-09  193  		case -EBUSY:
82c5da6bf8b55a Jerome Glisse       2010-04-09  194  		case -ERESTARTSYS:
de8dfb8e3449c7 Tom St Denis        2018-01-26  195  			ret = VM_FAULT_NOPAGE;
82c5da6bf8b55a Jerome Glisse       2010-04-09  196  			goto out_unlock;
82c5da6bf8b55a Jerome Glisse       2010-04-09  197  		default:
de8dfb8e3449c7 Tom St Denis        2018-01-26  198  			ret = VM_FAULT_SIGBUS;
82c5da6bf8b55a Jerome Glisse       2010-04-09  199  			goto out_unlock;
82c5da6bf8b55a Jerome Glisse       2010-04-09  200  		}
5d50fcbda7b0ac Christian König     2019-01-11  201  
5d50fcbda7b0ac Christian König     2019-01-11  202  		if (bo->moving != moving) {
5d50fcbda7b0ac Christian König     2019-01-11  203  			spin_lock(&bdev->glob->lru_lock);
5d50fcbda7b0ac Christian König     2019-01-11  204  			ttm_bo_move_to_lru_tail(bo, NULL);
5d50fcbda7b0ac Christian König     2019-01-11  205  			spin_unlock(&bdev->glob->lru_lock);
5d50fcbda7b0ac Christian König     2019-01-11  206  		}
5d50fcbda7b0ac Christian König     2019-01-11  207  		dma_fence_put(moving);
82c5da6bf8b55a Jerome Glisse       2010-04-09  208  	}
e024e11070a0a0 Dave Airlie         2009-06-24  209  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  210  	/*
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  211  	 * Wait for buffer data in transit, due to a pipelined
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  212  	 * move.
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  213  	 */
2880a38f4d3cf2 Evan Quan           2017-05-12  214  	ret = ttm_bo_vm_fault_idle(bo, vma, vmf);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  215  	if (unlikely(ret != 0)) {
0251eb85af434f Chengming Gui       2019-08-28  216  #ifdef FAULT_FLAG_RETRY_NOWAIT
de8dfb8e3449c7 Tom St Denis        2018-01-26  217  		if (ret == VM_FAULT_RETRY &&
3089c1df10e293 Nicolai Hähnle      2017-02-18  218  		    !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) {
2880a38f4d3cf2 Evan Quan           2017-05-12  219  #else
2880a38f4d3cf2 Evan Quan           2017-05-12  220  		if (ret == VM_FAULT_RETRY) {
2880a38f4d3cf2 Evan Quan           2017-05-12  221  #endif
3089c1df10e293 Nicolai Hähnle      2017-02-18  222  			/* The BO has already been unreserved. */
de8dfb8e3449c7 Tom St Denis        2018-01-26  223  			return ret;
3089c1df10e293 Nicolai Hähnle      2017-02-18  224  		}
3089c1df10e293 Nicolai Hähnle      2017-02-18  225  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  226  		goto out_unlock;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  227  	}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  228  
4daa4fba3a3899 Souptick Joarder    2018-06-02  229  	err = ttm_mem_io_lock(man, true);
4daa4fba3a3899 Souptick Joarder    2018-06-02  230  	if (unlikely(err != 0)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  231  		ret = VM_FAULT_NOPAGE;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  232  		goto out_unlock;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  233  	}
4daa4fba3a3899 Souptick Joarder    2018-06-02  234  	err = ttm_mem_io_reserve_vm(bo);
4daa4fba3a3899 Souptick Joarder    2018-06-02  235  	if (unlikely(err != 0)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  236  		ret = VM_FAULT_SIGBUS;
eba67093f53532 Thomas Hellstrom    2010-11-11  237  		goto out_io_unlock;
eba67093f53532 Thomas Hellstrom    2010-11-11  238  	}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  239  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  240  	page_offset = ((address - vma->vm_start) >> PAGE_SHIFT) +
d386735588c3e2 Thomas Hellstrom    2013-12-08  241  		vma->vm_pgoff - drm_vma_node_start(&bo->vma_node);
d386735588c3e2 Thomas Hellstrom    2013-12-08  242  	page_last = vma_pages(vma) + vma->vm_pgoff -
d386735588c3e2 Thomas Hellstrom    2013-12-08  243  		drm_vma_node_start(&bo->vma_node);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  244  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  245  	if (unlikely(page_offset >= bo->num_pages)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  246  		ret = VM_FAULT_SIGBUS;
eba67093f53532 Thomas Hellstrom    2010-11-11  247  		goto out_io_unlock;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  248  	}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  249  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  250  	/*
3943875e7b73fd Thomas Hellstrom    2013-11-06  251  	 * Make a local vma copy to modify the page_prot member
3943875e7b73fd Thomas Hellstrom    2013-11-06  252  	 * and vm_flags if necessary. The vma parameter is protected
3943875e7b73fd Thomas Hellstrom    2013-11-06  253  	 * by mmap_sem in write mode.
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  254  	 */
3943875e7b73fd Thomas Hellstrom    2013-11-06  255  	cvma = *vma;
3943875e7b73fd Thomas Hellstrom    2013-11-06  256  	cvma.vm_page_prot = vm_get_page_prot(cvma.vm_flags);
3943875e7b73fd Thomas Hellstrom    2013-11-06  257  
82c5da6bf8b55a Jerome Glisse       2010-04-09  258  	if (bo->mem.bus.is_iomem) {
3943875e7b73fd Thomas Hellstrom    2013-11-06  259  		cvma.vm_page_prot = ttm_io_prot(bo->mem.placement,
3943875e7b73fd Thomas Hellstrom    2013-11-06  260  						cvma.vm_page_prot);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  261  	} else {
d0cef9fa4411eb Roger He            2017-12-21  262  		struct ttm_operation_ctx ctx = {
d0cef9fa4411eb Roger He            2017-12-21  263  			.interruptible = false,
aa7662b67bf6f5 Roger He            2018-01-17  264  			.no_wait_gpu = false,
aa7662b67bf6f5 Roger He            2018-01-17  265  			.flags = TTM_OPT_FLAG_FORCE_ALLOC
aa7662b67bf6f5 Roger He            2018-01-17  266  
d0cef9fa4411eb Roger He            2017-12-21  267  		};
d0cef9fa4411eb Roger He            2017-12-21  268  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  269  		ttm = bo->ttm;
3943875e7b73fd Thomas Hellstrom    2013-11-06  270  		cvma.vm_page_prot = ttm_io_prot(bo->mem.placement,
3943875e7b73fd Thomas Hellstrom    2013-11-06  271  						cvma.vm_page_prot);
b1e5f172325547 Jerome Glisse       2011-11-02  272  
b1e5f172325547 Jerome Glisse       2011-11-02  273  		/* Allocate all page at once, most common usage */
25893a14c938d5 Christian König     2018-02-01  274  		if (ttm_tt_populate(ttm, &ctx)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  275  			ret = VM_FAULT_OOM;
b1e5f172325547 Jerome Glisse       2011-11-02  276  			goto out_io_unlock;
b1e5f172325547 Jerome Glisse       2011-11-02  277  		}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  278  	}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  279  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  280  	/*
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  281  	 * Speculatively prefault a number of pages. Only error on
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  282  	 * first page.
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  283  	 */
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  284  	for (i = 0; i < TTM_BO_VM_NUM_PREFAULT; ++i) {
95cf9264d5f36c Tom Lendacky        2017-07-17  285  		if (bo->mem.bus.is_iomem) {
2880a38f4d3cf2 Evan Quan           2017-05-12  286  #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
95cf9264d5f36c Tom Lendacky        2017-07-17  287  			/* Iomem should not be marked encrypted */
95cf9264d5f36c Tom Lendacky        2017-07-17  288  			cvma.vm_page_prot = pgprot_decrypted(cvma.vm_page_prot);
2880a38f4d3cf2 Evan Quan           2017-05-12  289  #endif
c67fa6edc8b11a Tan Xiaojun         2017-12-25  290  			pfn = ttm_bo_io_mem_pfn(bo, page_offset);
95cf9264d5f36c Tom Lendacky        2017-07-17  291  		} else {
b1e5f172325547 Jerome Glisse       2011-11-02  292  			page = ttm->pages[page_offset];
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  293  			if (unlikely(!page && i == 0)) {
de8dfb8e3449c7 Tom St Denis        2018-01-26  294  				ret = VM_FAULT_OOM;
eba67093f53532 Thomas Hellstrom    2010-11-11  295  				goto out_io_unlock;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  296  			} else if (unlikely(!page)) {
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  297  				break;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  298  			}
58aa6622d32af7 Thomas Hellstrom    2014-01-03  299  			page->index = drm_vma_node_start(&bo->vma_node) +
58aa6622d32af7 Thomas Hellstrom    2014-01-03  300  				page_offset;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  301  			pfn = page_to_pfn(page);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  302  		}
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  303  
7dfe8b6187f43d Thomas Hellstrom    2014-01-03  304  		if (vma->vm_flags & VM_MIXEDMAP)
4daa4fba3a3899 Souptick Joarder    2018-06-02  305  			ret = vmf_insert_mixed(&cvma, address,
1663f01b82777b Qiang Yu            2018-08-22  306  					__pfn_to_pfn_t(pfn, PFN_DEV | (bo->ssg_can_map ? PFN_MAP : 0)));
7dfe8b6187f43d Thomas Hellstrom    2014-01-03  307  		else
4daa4fba3a3899 Souptick Joarder    2018-06-02  308  			ret = vmf_insert_pfn(&cvma, address, pfn);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  309  		/*
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  310  		 * Somebody beat us to this PTE or prefaulting to
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  311  		 * an already populated PTE, or prefaulting error.
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  312  		 */
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  313  
4daa4fba3a3899 Souptick Joarder    2018-06-02  314  		if (unlikely((ret == VM_FAULT_NOPAGE && i > 0)))
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  315  			break;
4daa4fba3a3899 Souptick Joarder    2018-06-02  316  		else if (unlikely(ret & VM_FAULT_ERROR))
eba67093f53532 Thomas Hellstrom    2010-11-11  317  			goto out_io_unlock;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  318  
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  319  		address += PAGE_SIZE;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  320  		if (unlikely(++page_offset >= page_last))
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  321  			break;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  322  	}
de8dfb8e3449c7 Tom St Denis        2018-01-26  323  	ret = VM_FAULT_NOPAGE;
eba67093f53532 Thomas Hellstrom    2010-11-11  324  out_io_unlock:
eba67093f53532 Thomas Hellstrom    2010-11-11  325  	ttm_mem_io_unlock(man);
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  326  out_unlock:
7e18f7a415538c Evan Quan           2019-02-18  327  	kcl_reservation_object_unlock(bo->resv);
de8dfb8e3449c7 Tom St Denis        2018-01-26  328  	return ret;
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  329  }
ba4e7d973dd09b Thomas Hellstrom    2009-06-10  330  

:::::: The code at line 128 was first introduced by commit
:::::: ba4e7d973dd09b66912ac4c0856add8b0703a997 drm: Add the TTM GPU memory manager subsystem.

:::::: TO: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
:::::: CC: Dave Airlie <airlied@xxxxxxxxxx>

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation

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