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Commit b00ff043 authored by Dave Airlie's avatar Dave Airlie
Browse files

Merge branch 'amdkfd-next-3.19' of git://people.freedesktop.org/~gabbayo/linux into drm-next 

As discussed on irc, I'm sending a pull request with one important change:

- Disable support for 32-bit user processes. This is done due to AMD's decision
  to remove support for 32-bit user processes on Linux for its HSA stack.

* 'amdkfd-next-3.19' of git://people.freedesktop.org/~gabbayo/linux:
  amdkfd: Disable support for 32-bit user processes
parents 8c863944 a18069c1

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+12 −1
Original line number Diff line number Diff line
@@ -102,15 +102,26 @@ struct device *kfd_chardev(void) 
static int kfd_open(struct inode *inode, struct file *filep)

{

	struct kfd_process *process;

	bool is_32bit_user_mode;



	if (iminor(inode) != 0)

		return -ENODEV;



	is_32bit_user_mode = is_compat_task();



	if (is_32bit_user_mode == true) {

		dev_warn(kfd_device,

			"Process %d (32-bit) failed to open /dev/kfd\n"

			"32-bit processes are not supported by amdkfd\n",

			current->pid);

		return -EPERM;

	}



	process = kfd_create_process(current);

	if (IS_ERR(process))

		return PTR_ERR(process);



	process->is_32bit_user_mode = is_compat_task();

	process->is_32bit_user_mode = is_32bit_user_mode;



	dev_dbg(kfd_device, "process %d opened, compat mode (32 bit) - %d\n",

		process->pasid, process->is_32bit_user_mode);