On Wed, May 17, 2023 at 10:18:11AM -0400, Kent Overstreet wrote: > On Wed, May 17, 2023 at 05:04:27PM +0300, Mike Rapoport wrote: > > And I'm really curious why text_poke() is needed at all. Seems like we > could just use kmap_local() to create a temporary writeable mapping, On 64 bit kmap_local_page() is aliased to page_address() and does not map anything. text_poke() is needed to actually create a temporary writable mapping without touching page tables in vmalloc and/or direct map. -- Sincerely yours, Mike.
