On 3/18/2021 4:42 AM, Borislav Petkov wrote:
On Tue, Mar 16, 2021 at 08:10:47AM -0700, Yu-cheng Yu wrote:There was no more caller passing vm_flags to do_mmap(), and vm_flags was removed from the function's input by: commit 45e55300f114 ("mm: remove unnecessary wrapper function do_mmap_pgoff()"). There is a new user now. Shadow stack allocation passes VM_SHSTK to do_mmap(). Re-introduce vm_flags to do_mmap(), but without the old wrapper do_mmap_pgoff().Why does this matter at all? $ git grep do_mmap_pgoff $
Right, do_mmap_pgoff() was removed by commit 45e55300f114. This patch does not add back the wrapper. Instead, add vm_flags to do_mmap(). Please advice if I misunderstand the question.
Thanks, Yu-cheng
