[PATCH AUTOSEL 5.5 006/542] drm/virtio: fix byteorder handling in virtio_gpu_cmd_transfer_{from, to}_host_3d functions

[PATCH AUTOSEL 5.5 006/542] drm/virtio: fix byteorder handling in virtio_gpu_cmd_transfer_{from, to}_host_3d functions

[Sasha Levin]

From: Gerd Hoffmann <kraxel@redhat.com>

[ Upstream commit 1dc3485247170d3b88a21cadee7f7da1f0433495 ]

Be consistent with the rest of the code base.
No functional change.

v2:
 - fix sparse warnings for virtio_gpu_cmd_transfer_to_host_2d call.
 - move convert_to_hw_box helper function.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20191023062539.11728-2-kraxel@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  5 +++--
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 22 +++-------------------
 drivers/gpu/drm/virtio/virtgpu_vq.c    | 19 +++++++++++++++----
 3 files changed, 21 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 0b56ba005e253..eedae2a7b532d 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -38,6 +38,7 @@
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/virtgpu_drm.h>
 
 #define DRIVER_NAME "virtio_gpu"
 #define DRIVER_DESC "virtio GPU"
@@ -312,13 +313,13 @@ void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 					  uint32_t ctx_id,
 					  uint64_t offset, uint32_t level,
-					  struct virtio_gpu_box *box,
+					  struct drm_virtgpu_3d_box *box,
 					  struct virtio_gpu_object_array *objs,
 					  struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 					uint32_t ctx_id,
 					uint64_t offset, uint32_t level,
-					struct virtio_gpu_box *box,
+					struct drm_virtgpu_3d_box *box,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence);
 void
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 9af1ec62434f2..205ec4abae2b9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -33,17 +33,6 @@
 
 #include "virtgpu_drv.h"
 
-static void convert_to_hw_box(struct virtio_gpu_box *dst,
-			      const struct drm_virtgpu_3d_box *src)
-{
-	dst->x = cpu_to_le32(src->x);
-	dst->y = cpu_to_le32(src->y);
-	dst->z = cpu_to_le32(src->z);
-	dst->w = cpu_to_le32(src->w);
-	dst->h = cpu_to_le32(src->h);
-	dst->d = cpu_to_le32(src->d);
-}
-
 static int virtio_gpu_map_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file_priv)
 {
@@ -304,7 +293,6 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
 	struct virtio_gpu_fence *fence;
 	int ret;
 	u32 offset = args->offset;
-	struct virtio_gpu_box box;
 
 	if (vgdev->has_virgl_3d == false)
 		return -ENOSYS;
@@ -317,8 +305,6 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
 	if (ret != 0)
 		goto err_put_free;
 
-	convert_to_hw_box(&box, &args->box);
-
 	fence = virtio_gpu_fence_alloc(vgdev);
 	if (!fence) {
 		ret = -ENOMEM;
@@ -326,7 +312,7 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
 	}
 	virtio_gpu_cmd_transfer_from_host_3d
 		(vgdev, vfpriv->ctx_id, offset, args->level,
-		 &box, objs, fence);
+		 &args->box, objs, fence);
 	dma_fence_put(&fence->f);
 	return 0;
 
@@ -345,7 +331,6 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
 	struct drm_virtgpu_3d_transfer_to_host *args = data;
 	struct virtio_gpu_object_array *objs;
 	struct virtio_gpu_fence *fence;
-	struct virtio_gpu_box box;
 	int ret;
 	u32 offset = args->offset;
 
@@ -353,11 +338,10 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
 	if (objs == NULL)
 		return -ENOENT;
 
-	convert_to_hw_box(&box, &args->box);
 	if (!vgdev->has_virgl_3d) {
 		virtio_gpu_cmd_transfer_to_host_2d
 			(vgdev, offset,
-			 box.w, box.h, box.x, box.y,
+			 args->box.w, args->box.h, args->box.x, args->box.y,
 			 objs, NULL);
 	} else {
 		ret = virtio_gpu_array_lock_resv(objs);
@@ -372,7 +356,7 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
 		virtio_gpu_cmd_transfer_to_host_3d
 			(vgdev,
 			 vfpriv ? vfpriv->ctx_id : 0, offset,
-			 args->level, &box, objs, fence);
+			 args->level, &args->box, objs, fence);
 		dma_fence_put(&fence->f);
 	}
 	return 0;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 74ad3bc3ebe83..9274c4063c701 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -40,6 +40,17 @@
 			       + MAX_INLINE_CMD_SIZE		 \
 			       + MAX_INLINE_RESP_SIZE)
 
+static void convert_to_hw_box(struct virtio_gpu_box *dst,
+			      const struct drm_virtgpu_3d_box *src)
+{
+	dst->x = cpu_to_le32(src->x);
+	dst->y = cpu_to_le32(src->y);
+	dst->z = cpu_to_le32(src->z);
+	dst->w = cpu_to_le32(src->w);
+	dst->h = cpu_to_le32(src->h);
+	dst->d = cpu_to_le32(src->d);
+}
+
 void virtio_gpu_ctrl_ack(struct virtqueue *vq)
 {
 	struct drm_device *dev = vq->vdev->priv;
@@ -965,7 +976,7 @@ virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
 void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 					uint32_t ctx_id,
 					uint64_t offset, uint32_t level,
-					struct virtio_gpu_box *box,
+					struct drm_virtgpu_3d_box *box,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence)
 {
@@ -987,7 +998,7 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
 	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
-	cmd_p->box = *box;
+	convert_to_hw_box(&cmd_p->box, box);
 	cmd_p->offset = cpu_to_le64(offset);
 	cmd_p->level = cpu_to_le32(level);
 
@@ -997,7 +1008,7 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 					  uint32_t ctx_id,
 					  uint64_t offset, uint32_t level,
-					  struct virtio_gpu_box *box,
+					  struct drm_virtgpu_3d_box *box,
 					  struct virtio_gpu_object_array *objs,
 					  struct virtio_gpu_fence *fence)
 {
@@ -1013,7 +1024,7 @@ void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D);
 	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
-	cmd_p->box = *box;
+	convert_to_hw_box(&cmd_p->box, box);
 	cmd_p->offset = cpu_to_le64(offset);
 	cmd_p->level = cpu_to_le32(level);
 
-- 
2.20.1

[PATCH AUTOSEL 5.5 007/542] drm/qxl: Complete exception handling in qxl_device_init()

[Sasha Levin]

From: Markus Elfring <elfring@users.sourceforge.net>

[ Upstream commit dbe3ad61dcebc49fe3efca70a0f752a95b4600f2 ]

A coccicheck run provided information like the following.

drivers/gpu/drm/qxl/qxl_kms.c:295:1-7: ERROR: missing iounmap;
ioremap on line 178 and execution via conditional on line 185

Generated by: scripts/coccinelle/free/iounmap.cocci

A jump target was specified in an if branch. The corresponding function
call did not release the desired system resource then.
Thus use the label “rom_unmap” instead to fix the exception handling
for this function implementation.

Fixes: 5043348a4969ae1661c008efe929abd0d76e3792 ("drm: qxl: Fix error handling at qxl_device_init")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: http://patchwork.freedesktop.org/patch/msgid/5e5ef9c4-4d85-3c93-cf28-42cfcb5b0649@web.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/qxl/qxl_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
index 611cbe7aee690..bfc1631093e9b 100644
--- a/drivers/gpu/drm/qxl/qxl_kms.c
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -184,7 +184,7 @@ int qxl_device_init(struct qxl_device *qdev,
 
 	if (!qxl_check_device(qdev)) {
 		r = -ENODEV;
-		goto surface_mapping_free;
+		goto rom_unmap;
 	}
 
 	r = qxl_bo_init(qdev);
-- 
2.20.1

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[PATCH AUTOSEL 5.5 538/542] virtio_balloon: prevent pfn array overflow

[Sasha Levin]

From: "Michael S. Tsirkin" <mst@redhat.com>

[ Upstream commit 6e9826e77249355c09db6ba41cd3f84e89f4b614 ]

Make sure, at build time, that pfn array is big enough to hold a single
page.  It happens to be true since the PAGE_SHIFT value at the moment is
20, which is 1M - exactly 256 4K balloon pages.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/virtio/virtio_balloon.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 7e5d84caeb940..7bfe365d93720 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -158,6 +158,8 @@ static void set_page_pfns(struct virtio_balloon *vb,
 {
 	unsigned int i;
 
+	BUILD_BUG_ON(VIRTIO_BALLOON_PAGES_PER_PAGE > VIRTIO_BALLOON_ARRAY_PFNS_MAX);
+
 	/*
 	 * Set balloon pfns pointing at this page.
 	 * Note that the first pfn points at start of the page.
-- 
2.20.1