Messages in this thread | | | Date | Fri, 23 Nov 2012 18:42:56 +0100 | From | Oleg Nesterov <> | Subject | Re: vdso && cr (Was: arch_check_bp_in_kernelspace: fix the range check) |
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On 11/23, Pavel Emelyanov wrote: > > On 11/22/2012 08:12 PM, Oleg Nesterov wrote: > > > Sure. You shouldn't try to save/restore this page(s) directly. But > > I do not really understand why do you need. IOW, I don't really > > understand the problem, it depends on what c/r actually does. > > Think about it like this -- you stop a process, then change the kern^w VDSO > page. Everything should work as it used to be :)
I understand. But again, this depends on how you restore. For example, if you do not "transfer" libc/ld code, then probably vdso is not a problem. Just you need to ensure the task was not stopped "inside" vdso. Yes, yes, I understand that this is too limited, you probably want to transfer "everything".
Oleg.
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