Messages in this thread | | | Subject | Re: [PATCH] UML: don't discard .text.exit section | From | Richard Weinberger <> | Date | Fri, 19 Aug 2016 13:16:53 +0200 |
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On 19.08.2016 12:48, Andrey Ryabinin wrote: > On 08/19/2016 03:14 AM, Dmitry Vyukov wrote: >> On Thu, Aug 18, 2016 at 3:08 AM, Andrey Ryabinin >> <aryabinin@virtuozzo.com> wrote: >>> >>>> >>>> Sorry for delays, I am travelling. >>>> Do we need ".fini_array" section? It's also destructors that we don't >>>> run. Or does UML use them? Does discarding ".fini_array" help? >>>> >>> >>> libc has desctructors and use them for whatever purpose it needs. >> >> >> Does UML actually gracefully exit running global destructors? That >> would also require gracefully shutting down all threads/cpus. Doesn't >> it just _exit (or syscall(SYS_exit_group))? >> > > Sigh, I dunno, I didn't look that far. My intention was to fix build and keep old behavior unaffected. > If you want to wipe destructors, and think that this is ok, go ahead.
UML exits like any regular C program does. The main() function is in arch/um/os-Linux/main.c, when the kernel terminates, hence linux_main() returns back to main() it just returns the exit code. At this point libc's destructors will run, right?
Thanks, //richard
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