[PATCH 4.4 038/163] drm/nouveau/core: use vzalloc for allocating ramht

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ilia Mirkin <imirkin@xxxxxxxxxxxx>

commit 78a121d82da8aff3aca2a6a1c40f5061081760f0 upstream.

Most calls to nvkm_ramht_new use 0x8000 as the size. This results in a
fairly sizeable chunk of memory to be allocated, which may not be
available with kzalloc. Since this is done fairly rarely (once per
channel), use vzalloc instead.

Signed-off-by: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Cc: Sven Joachim <svenjoac@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/nouveau/nvkm/core/ramht.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/nouveau/nvkm/core/ramht.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/ramht.c
@@ -131,7 +131,7 @@ nvkm_ramht_del(struct nvkm_ramht **pramh
 	struct nvkm_ramht *ramht = *pramht;
 	if (ramht) {
 		nvkm_gpuobj_del(&ramht->gpuobj);
-		kfree(*pramht);
+		vfree(*pramht);
 		*pramht = NULL;
 	}
 }
@@ -143,8 +143,8 @@ nvkm_ramht_new(struct nvkm_device *devic
 	struct nvkm_ramht *ramht;
 	int ret, i;
 
-	if (!(ramht = *pramht = kzalloc(sizeof(*ramht) + (size >> 3) *
-					sizeof(*ramht->data), GFP_KERNEL)))
+	if (!(ramht = *pramht = vzalloc(sizeof(*ramht) +
+					(size >> 3) * sizeof(*ramht->data))))
 		return -ENOMEM;
 
 	ramht->device = device;