Messages in this thread | | | Date | Sat, 15 Dec 2012 02:43:07 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [CRIU] [PATCH] Add VDSO time function support for x86 32-bit kernel |
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On Fri, Dec 14, 2012 at 02:27:08PM -0800, H. Peter Anvin wrote: > On 12/14/2012 02:25 PM, Cyrill Gorcunov wrote: > > > > this would allow us to defer checkpoint until task finish vdso code. Peter, > > if I understand you correctly you propose we provide some own proxy-vdso > > which would redirect calls to real ones, right? But the main problem > > is that is exactly the idea to be able to c/r existing programs without > > recompiling and such (or I miss something here?). > > No, I'm proposing that you use a proxy-vdso which does nothing but > system calls, and therefore can be stable indefinitely.
This won't help in case of scenario you've been pointing in previous email (where c/r happens in a middle of vdso), would it? Because we still need somehow to be sure we're not checkpointing in a middle of signal handler which will return to some vdso place.
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