| Message ID | 20220319204229.9846-7-ramalingam.c@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915/ttm: Evict and restore of compressed object | expand |
In the previous version I replied only to the mailing list email so probably my email slipped through. Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> for patch 6-7 On 3/19/2022 9:42 PM, Ramalingam C wrote: > Add a parameter called "extra_pages" for ttm_tt_init, to indicate that > driver needs extra pages in ttm_tt. > > v2: > Used imperative wording [Thomas and Christian] > > Signed-off-by: Ramalingam C <ramalingam.c@intel.com> > cc: Christian Koenig <christian.koenig@amd.com> > cc: Hellstrom Thomas <thomas.hellstrom@intel.com> > Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com> > Reviewed-by: Christian Konig <christian.koenig@amd.com> > --- > drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- > drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +- > drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- > drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- > drivers/gpu/drm/ttm/ttm_tt.c | 12 +++++++----- > drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- > include/drm/ttm/ttm_tt.h | 4 +++- > 7 files changed, 15 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c > index dc7f938bfff2..123045b58fec 100644 > --- a/drivers/gpu/drm/drm_gem_vram_helper.c > +++ b/drivers/gpu/drm/drm_gem_vram_helper.c > @@ -867,7 +867,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, > if (!tt) > return NULL; > > - ret = ttm_tt_init(tt, bo, page_flags, ttm_cached); > + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); > if (ret < 0) > goto err_ttm_tt_init; > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > index e4a06fcf741a..3b9f99c765c4 100644 > --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > @@ -290,7 +290,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo, > i915_tt->is_shmem = true; > } > > - ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching); > + ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching, 0); > if (ret) > goto err_free; > > diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c > index b2e33d5ba5d0..52156b54498f 100644 > --- a/drivers/gpu/drm/qxl/qxl_ttm.c > +++ b/drivers/gpu/drm/qxl/qxl_ttm.c > @@ -113,7 +113,7 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, > ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); > if (ttm == NULL) > return NULL; > - if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { > + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { > kfree(ttm); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c > index 6ddc16f0fe2b..d27691f2e451 100644 > --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c > +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c > @@ -134,7 +134,7 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo, > agp_be->mem = NULL; > agp_be->bridge = bridge; > > - if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined)) { > + if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) { > kfree(agp_be); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c > index d234aab800a0..1a66d9fc589a 100644 > --- a/drivers/gpu/drm/ttm/ttm_tt.c > +++ b/drivers/gpu/drm/ttm/ttm_tt.c > @@ -134,9 +134,10 @@ void ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) > static void ttm_tt_init_fields(struct ttm_tt *ttm, > struct ttm_buffer_object *bo, > uint32_t page_flags, > - enum ttm_caching caching) > + enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm->num_pages = PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT; > + ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages; > ttm->caching = ttm_cached; > ttm->page_flags = page_flags; > ttm->dma_address = NULL; > @@ -146,9 +147,10 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm, > } > > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching) > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, extra_pages); > > if (ttm_tt_alloc_page_directory(ttm)) { > pr_err("Failed allocating page table\n"); > @@ -180,7 +182,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > { > int ret; > > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, 0); > > if (page_flags & TTM_TT_FLAG_EXTERNAL) > ret = ttm_sg_tt_alloc_page_directory(ttm); > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > index b84ecc6d6611..4e3938e62c08 100644 > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > @@ -517,7 +517,7 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, > ttm_cached); > else > ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags, > - ttm_cached); > + ttm_cached, 0); > if (unlikely(ret != 0)) > goto out_no_init; > > diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h > index f20832139815..17a0310e8aaa 100644 > --- a/include/drm/ttm/ttm_tt.h > +++ b/include/drm/ttm/ttm_tt.h > @@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * @bo: The buffer object we create the ttm for. > * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags. > * @caching: the desired caching state of the pages > + * @extra_pages: Extra pages needed for the driver. > * > * Create a struct ttm_tt to back data with system memory pages. > * No pages are actually allocated. > @@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * NULL: Out of memory. > */ > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching); > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages); > int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, > uint32_t page_flags, enum ttm_caching caching); >
On 2022-03-21 at 11:11:33 +0100, Das, Nirmoy wrote: > In the previous version I replied only to the mailing list email so probably > my email slipped through. Sorry for the miss. Thank so much for the review. Ram > > Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> for patch 6-7 > > On 3/19/2022 9:42 PM, Ramalingam C wrote: > > Add a parameter called "extra_pages" for ttm_tt_init, to indicate that > > driver needs extra pages in ttm_tt. > > > > v2: > > Used imperative wording [Thomas and Christian] > > > > Signed-off-by: Ramalingam C <ramalingam.c@intel.com> > > cc: Christian Koenig <christian.koenig@amd.com> > > cc: Hellstrom Thomas <thomas.hellstrom@intel.com> > > Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com> > > Reviewed-by: Christian Konig <christian.koenig@amd.com> > > --- > > drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- > > drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +- > > drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- > > drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- > > drivers/gpu/drm/ttm/ttm_tt.c | 12 +++++++----- > > drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- > > include/drm/ttm/ttm_tt.h | 4 +++- > > 7 files changed, 15 insertions(+), 11 deletions(-) > > > > diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c > > index dc7f938bfff2..123045b58fec 100644 > > --- a/drivers/gpu/drm/drm_gem_vram_helper.c > > +++ b/drivers/gpu/drm/drm_gem_vram_helper.c > > @@ -867,7 +867,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, > > if (!tt) > > return NULL; > > - ret = ttm_tt_init(tt, bo, page_flags, ttm_cached); > > + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); > > if (ret < 0) > > goto err_ttm_tt_init; > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > > index e4a06fcf741a..3b9f99c765c4 100644 > > --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > > +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > > @@ -290,7 +290,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo, > > i915_tt->is_shmem = true; > > } > > - ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching); > > + ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching, 0); > > if (ret) > > goto err_free; > > diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c > > index b2e33d5ba5d0..52156b54498f 100644 > > --- a/drivers/gpu/drm/qxl/qxl_ttm.c > > +++ b/drivers/gpu/drm/qxl/qxl_ttm.c > > @@ -113,7 +113,7 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, > > ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); > > if (ttm == NULL) > > return NULL; > > - if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { > > + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { > > kfree(ttm); > > return NULL; > > } > > diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c > > index 6ddc16f0fe2b..d27691f2e451 100644 > > --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c > > +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c > > @@ -134,7 +134,7 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo, > > agp_be->mem = NULL; > > agp_be->bridge = bridge; > > - if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined)) { > > + if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) { > > kfree(agp_be); > > return NULL; > > } > > diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c > > index d234aab800a0..1a66d9fc589a 100644 > > --- a/drivers/gpu/drm/ttm/ttm_tt.c > > +++ b/drivers/gpu/drm/ttm/ttm_tt.c > > @@ -134,9 +134,10 @@ void ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) > > static void ttm_tt_init_fields(struct ttm_tt *ttm, > > struct ttm_buffer_object *bo, > > uint32_t page_flags, > > - enum ttm_caching caching) > > + enum ttm_caching caching, > > + unsigned long extra_pages) > > { > > - ttm->num_pages = PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT; > > + ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages; > > ttm->caching = ttm_cached; > > ttm->page_flags = page_flags; > > ttm->dma_address = NULL; > > @@ -146,9 +147,10 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm, > > } > > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > > - uint32_t page_flags, enum ttm_caching caching) > > + uint32_t page_flags, enum ttm_caching caching, > > + unsigned long extra_pages) > > { > > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > > + ttm_tt_init_fields(ttm, bo, page_flags, caching, extra_pages); > > if (ttm_tt_alloc_page_directory(ttm)) { > > pr_err("Failed allocating page table\n"); > > @@ -180,7 +182,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > > { > > int ret; > > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > > + ttm_tt_init_fields(ttm, bo, page_flags, caching, 0); > > if (page_flags & TTM_TT_FLAG_EXTERNAL) > > ret = ttm_sg_tt_alloc_page_directory(ttm); > > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > > index b84ecc6d6611..4e3938e62c08 100644 > > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > > @@ -517,7 +517,7 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, > > ttm_cached); > > else > > ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags, > > - ttm_cached); > > + ttm_cached, 0); > > if (unlikely(ret != 0)) > > goto out_no_init; > > diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h > > index f20832139815..17a0310e8aaa 100644 > > --- a/include/drm/ttm/ttm_tt.h > > +++ b/include/drm/ttm/ttm_tt.h > > @@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > > * @bo: The buffer object we create the ttm for. > > * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags. > > * @caching: the desired caching state of the pages > > + * @extra_pages: Extra pages needed for the driver. > > * > > * Create a struct ttm_tt to back data with system memory pages. > > * No pages are actually allocated. > > @@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > > * NULL: Out of memory. > > */ > > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > > - uint32_t page_flags, enum ttm_caching caching); > > + uint32_t page_flags, enum ttm_caching caching, > > + unsigned long extra_pages); > > int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, > > uint32_t page_flags, enum ttm_caching caching);
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index dc7f938bfff2..123045b58fec 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -867,7 +867,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, if (!tt) return NULL; - ret = ttm_tt_init(tt, bo, page_flags, ttm_cached); + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); if (ret < 0) goto err_ttm_tt_init; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index e4a06fcf741a..3b9f99c765c4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -290,7 +290,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo, i915_tt->is_shmem = true; } - ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching); + ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching, 0); if (ret) goto err_free; diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index b2e33d5ba5d0..52156b54498f 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -113,7 +113,7 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); if (ttm == NULL) return NULL; - if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { kfree(ttm); return NULL; } diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c index 6ddc16f0fe2b..d27691f2e451 100644 --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c @@ -134,7 +134,7 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo, agp_be->mem = NULL; agp_be->bridge = bridge; - if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined)) { + if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) { kfree(agp_be); return NULL; } diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index d234aab800a0..1a66d9fc589a 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -134,9 +134,10 @@ void ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) static void ttm_tt_init_fields(struct ttm_tt *ttm, struct ttm_buffer_object *bo, uint32_t page_flags, - enum ttm_caching caching) + enum ttm_caching caching, + unsigned long extra_pages) { - ttm->num_pages = PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT; + ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages; ttm->caching = ttm_cached; ttm->page_flags = page_flags; ttm->dma_address = NULL; @@ -146,9 +147,10 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm, } int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, - uint32_t page_flags, enum ttm_caching caching) + uint32_t page_flags, enum ttm_caching caching, + unsigned long extra_pages) { - ttm_tt_init_fields(ttm, bo, page_flags, caching); + ttm_tt_init_fields(ttm, bo, page_flags, caching, extra_pages); if (ttm_tt_alloc_page_directory(ttm)) { pr_err("Failed allocating page table\n"); @@ -180,7 +182,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, { int ret; - ttm_tt_init_fields(ttm, bo, page_flags, caching); + ttm_tt_init_fields(ttm, bo, page_flags, caching, 0); if (page_flags & TTM_TT_FLAG_EXTERNAL) ret = ttm_sg_tt_alloc_page_directory(ttm); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c index b84ecc6d6611..4e3938e62c08 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c @@ -517,7 +517,7 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, ttm_cached); else ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags, - ttm_cached); + ttm_cached, 0); if (unlikely(ret != 0)) goto out_no_init; diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h index f20832139815..17a0310e8aaa 100644 --- a/include/drm/ttm/ttm_tt.h +++ b/include/drm/ttm/ttm_tt.h @@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); * @bo: The buffer object we create the ttm for. * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags. * @caching: the desired caching state of the pages + * @extra_pages: Extra pages needed for the driver. * * Create a struct ttm_tt to back data with system memory pages. * No pages are actually allocated. @@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); * NULL: Out of memory. */ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, - uint32_t page_flags, enum ttm_caching caching); + uint32_t page_flags, enum ttm_caching caching, + unsigned long extra_pages); int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, uint32_t page_flags, enum ttm_caching caching);