Date: Tue, 11 Feb 2014 13:21:02 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Andriy Gapon <avg@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: core dump vs kern.ipc.shm_use_phys Message-ID: <201402111321.02294.jhb@freebsd.org> In-Reply-To: <52DFAC31.6030905@FreeBSD.org> References: <52DFAC31.6030905@FreeBSD.org>
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On Wednesday, January 22, 2014 6:32:01 am Andriy Gapon wrote: > > I seems that if kern.ipc.shm_use_phys is enabled then shared memory regions are > not included into a coredump. Seems that each_writable_segment() in > sys/kern/imgact_elf.c skips OBJT_PHYS objects. Hmm, that may be a feature. I often map large shared memory segments with MAP_NOCORE on purpose. Is it to tell if a given OBJT_PHYS object is a SYSV SHM object? (I assume it isn't.) -- John Baldwin
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