https://cgit.freedesktop.org/nouveau/xf86-video-nouveau/commit/?id=e80e73ced69b15662103d0fd6837db4ce6c6eb5b
https://bugs.gentoo.org/827878

From: Dave Airlie <airlied@redhat.com>
Date: Mon, 13 Jul 2020 09:20:15 +1000
Subject: nouveau: fixup driver for new X server ABI

--- a/src/compat-api.h
+++ b/src/compat-api.h
@@ -102,4 +102,8 @@
 
 #endif
 
+#if ABI_VIDEODRV_VERSION < SET_ABI_VERSION(25, 2)
+#define secondary_dst slave_dst
+#endif
+
 #endif
--- a/src/nouveau_exa.c
+++ b/src/nouveau_exa.c
@@ -157,7 +157,7 @@ nouveau_exa_destroy_pixmap(ScreenPtr pScreen, void *priv)
 
 #ifdef NOUVEAU_PIXMAP_SHARING
 static Bool
-nouveau_exa_share_pixmap_backing(PixmapPtr ppix, ScreenPtr slave, void **handle_p)
+nouveau_exa_share_pixmap_backing(PixmapPtr ppix, ScreenPtr secondary, void **handle_p)
 {
 	struct nouveau_bo *bo = nouveau_pixmap_bo(ppix);
 	struct nouveau_pixmap *nvpix = nouveau_pixmap(ppix);
--- a/src/nv_driver.c
+++ b/src/nv_driver.c
@@ -559,16 +559,16 @@ redisplay_dirty(ScreenPtr screen, PixmapDirtyUpdatePtr dirty)
 {
 	RegionRec pixregion;
 
-	PixmapRegionInit(&pixregion, dirty->slave_dst);
+	PixmapRegionInit(&pixregion, dirty->secondary_dst);
 
-	DamageRegionAppend(&dirty->slave_dst->drawable, &pixregion);
+	DamageRegionAppend(&dirty->secondary_dst->drawable, &pixregion);
 #ifdef HAS_DIRTYTRACKING_ROTATION
 	PixmapSyncDirtyHelper(dirty);
 #else
 	PixmapSyncDirtyHelper(dirty, &pixregion);
 #endif
 
-	DamageRegionProcessPending(&dirty->slave_dst->drawable);
+	DamageRegionProcessPending(&dirty->secondary_dst->drawable);
 	RegionUninit(&pixregion);
 }
 
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