[lkml]   [2006]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: ptrace and pfn mappings

> I think the best idea is to add a new ->access method to the vm_operations
> that's called by access_process_vm() when it exists and VM_IO or VM_PFNMAP
> are set. ->access would take the required object locks and copy out the
> data manually. This should work both for spufs and drm.

Another option is to have access_process_vm() lookup the PTE and lock it
while copying the data from the page.

something like

- lookup pte & lock
- check if pte still present
- copy data to temp kernel buffer
- unlock pte
- copy data to user buffer


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-10-10 14:51    [W:0.088 / U:9.868 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site