[PATCH 4.12 24/31] drm/vmwgfx: Limit max desktop dimensions to 8Kx8K - Greg Kroah-Hartman

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Sinclair Yeh <syeh@vmware.com>,
	Brian Paul <brianp@vmware.com>
Subject: [PATCH 4.12 24/31] drm/vmwgfx: Limit max desktop dimensions to 8Kx8K
Date: Thu,  3 Aug 2017 16:17:54 -0700	[thread overview]
Message-ID: <20170803231738.402025226@linuxfoundation.org> (raw)
In-Reply-To: <20170803231737.202188456@linuxfoundation.org>

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

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

From: Sinclair Yeh <syeh@vmware.com>

commit 7b009e76797c82178d7a03ae0eaad5951d975277 upstream.

This was originally chosen to be an arbitrarily large number.  However,
some user mode may actually try to set a 16Kx16K mode and run into other
issues.

Since 8Kx8K is the current texture limit for Mesa LLVM driver, we will
just use this limit for now.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -1640,8 +1640,8 @@ int vmw_kms_stdu_init_display(struct vmw
 		 * something arbitrarily large and we will reject any layout
 		 * that doesn't fit prim_bb_mem later
 		 */
-		dev->mode_config.max_width = 16384;
-		dev->mode_config.max_height = 16384;
+		dev->mode_config.max_width = 8192;
+		dev->mode_config.max_height = 8192;
 	}
 
 	vmw_kms_create_implicit_placement_property(dev_priv, false);
