linux/drivers/gpu/drm/ttm
Thomas Hellstrom (VMware) 314b6580ad drm/ttm, drm/vmwgfx: Support huge TTM pagefaults
Support huge (PMD-size and PUD-size) page-table entries by providing a
huge_fault() callback.
We still support private mappings and write-notify by splitting the huge
page-table entries on write-access.

Note that for huge page-faults to occur, either the kernel needs to be
compiled with trans-huge-pages always enabled, or the kernel needs to be
compiled with trans-huge-pages enabled using madvise, and the user-space
app needs to call madvise() to enable trans-huge pages on a per-mapping
basis.

Furthermore huge page-faults will not succeed unless buffer objects and
user-space addresses are aligned on huge page size boundaries.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Thomas Hellstrom (VMware) <thomas_os@shipmail.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2020-03-24 18:48:33 +01:00
..
Makefile drm/ttm, drm/vmwgfx: Use a configuration option for the TTM dma page pool 2019-11-14 08:41:23 +01:00
ttm_agp_backend.c drm/ttm: remove pointers to globals 2019-10-25 11:40:51 +02:00
ttm_bo_manager.c Add SPDX idenitifier and clarify license 2018-05-15 13:44:27 -05:00
ttm_bo_util.c Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
ttm_bo_vm.c drm/ttm, drm/vmwgfx: Support huge TTM pagefaults 2020-03-24 18:48:33 +01:00
ttm_bo.c drm/ttm: fix false positive assert 2020-03-11 10:52:16 +01:00
ttm_execbuf_util.c drm/ttm: remove pointers to globals 2019-10-25 11:40:51 +02:00
ttm_memory.c drm/ttm: remove pointers to globals 2019-10-25 11:40:51 +02:00
ttm_module.c Add SPDX idenitifier and clarify license 2018-05-15 13:44:27 -05:00
ttm_page_alloc_dma.c drm/ttm: Use scnprintf() for avoiding potential buffer overflow 2020-03-11 12:44:21 +01:00
ttm_page_alloc.c drm/ttm: remove pointers to globals 2019-10-25 11:40:51 +02:00
ttm_tt.c drm/ttm: ttm_tt_init_fields() can be static 2019-11-04 13:02:34 +01:00