From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Tue, 21 Jan 2020 09:58:25 +0000 (+0100)
Subject: winsys/svga: Enable transhuge pages for buffer objects
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8afe12b2123cca006df6d0eaa45eb89c36f63a98;p=mesa.git

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 4ce953fee8d..6f987ba059d 100644
--- 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;
    }