diff options
Diffstat (limited to 'drivers/tee/optee/call.c')
| -rw-r--r-- | drivers/tee/optee/call.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 13b0269a0abc..cf2367ba08d6 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -554,6 +554,13 @@ static int check_mem_type(unsigned long start, size_t num_pages) struct mm_struct *mm = current->mm; int rc; + /* + * Allow kernel address to register with OP-TEE as kernel + * pages are configured as normal memory only. + */ + if (virt_addr_valid(start)) + return 0; + down_read(&mm->mmap_sem); rc = __check_mem_type(find_vma(mm, start), start + num_pages * PAGE_SIZE); |