On 8/5/23 10:07, Matthew Wilcox wrote: ...
Sorry, I am not able to give any explanation here, I am not familiar with the pvrsrvkm source, I just use it to have one working AOSP build. here is the source file where pte_offset_map_lock is called, https://android-git.linaro.org/kernel/omap-modules.git/tree/pvr/services4/srvkm/env/linux/osfunc.c?h=android-mainline#n3508 in case you could know something with a quick look.Isn't this just get_user_pages()?
Or even just follow_page(), which looks like a nearly perfect drop-in replacement, especially since that android link also says, "The page in question must be present (i.e. no fault handling required)". thanks, -- John Hubbard NVIDIA
