Message ID | 1572530323-14802-2-git-send-email-sumit.garg@linaro.org |
---|---|
State | New |
Headers | show
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Series |
Introduce TEE based Trusted Keys support
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expand
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diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index 13b0269..cf2367b 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);