Messages in this thread | | | Date | Thu, 5 May 2005 16:34:39 -0700 | From | Libor Michalek <> | Subject | Re: [openib-general] Re: [PATCH][RFC][0/4] InfiniBand userspace verbs implementation |
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On Wed, May 04, 2005 at 01:27:54PM -0500, Timur Tabi wrote: > Libor Michalek wrote: > > > The program opens the charcter device file descriptor, pins the pages > > and waits for a signal, before checking the pages, which is sent to the > > process after running some other program which exercises the VM. On older > > kernels the check fails, on my 2.6.11 kernel the check succeeds. So > > mlock is not needed on top of get_user_pages() as it was before. > > When you say "older", what exactly do you mean? I have different test > that normally fails with just get_user_pages(), but it works with 2.6.9 > and above. I haven't been able to get any kernel earlier than 2.6.9 to > compile or boot properly, so I'm having a hard time narrowing down the > actual point when get_user_pages() started working.
The older kernel I tried was one of the 2.4.21 RHEL 3 kernels. I hadn't spent much time investigating the issue since this was a new kernel, so it was a natural one for me to try.
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