From b05db03c9b94bb801ca64317821c9c28cec99d1b Mon Sep 17 00:00:00 2001
From: jsg <jsg@openbsd.org>
Date: Mon, 31 Jan 2022 08:47:03 +0000
Subject: [PATCH] enable the movntdqa version of drm_memcpy_from_wc() only
 caller is ttm_move_memcpy() inteldrm has equivalent bits in i915_memcpy.c

---
 sys/dev/pci/drm/drm_cache.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/sys/dev/pci/drm/drm_cache.c b/sys/dev/pci/drm/drm_cache.c
index c5f586456fb..1fb8f883c4c 100644
--- a/sys/dev/pci/drm/drm_cache.c
+++ b/sys/dev/pci/drm/drm_cache.c
@@ -253,9 +253,28 @@ static void memcpy_fallback(struct dma_buf_map *dst,
 	}
 }
 
-#if defined(CONFIG_X86) && defined(__linux__)
+#ifdef CONFIG_X86
 
+#ifdef __linux__
 static DEFINE_STATIC_KEY_FALSE(has_movntdqa);
+#else
+static int has_movntdqa;
+
+#include <asm/fpu/api.h>
+
+static inline void
+static_branch_enable(int *x)
+{
+	*x = 1;
+}
+
+static inline int
+static_branch_likely(int *x)
+{
+	return (likely(*x == 1));
+}
+
+#endif
 
 static void __memcpy_ntdqa(void *dst, const void *src, unsigned long len)
 {
-- 
2.20.1