winsys/svga: Enable transhuge pages for buffer objects

If the kernel supports it, enable transhuge pages for graphics buffer
objects. Except for the syscall itself, this is never expected to cause
any negative performance implications.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3614>

diff --git a/src/gallium/winsys/svga/drm/vmw_screen_ioctl.c b/src/gallium/winsys/svga/drm/vmw_screen_ioctl.c
index 4ce953fee8ded20cb1516c3f664f9c5482aa0023..6f987ba059dab9d8ceb93fb51f465273446c3d81 100644 (file)
--- a/src/gallium/winsys/svga/drm/vmw_screen_ioctl.c
+++ b/src/gallium/winsys/svga/drm/vmw_screen_ioctl.c
@@ -694,6 +694,7 @@ vmw_ioctl_region_map(struct vmw_region *region)
         return NULL;
       }
 
+      (void) madvise(map, region->size, MADV_HUGEPAGE);
       region->data = map;
    }