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Date: Thu, 12 Mar 2015 11:33:31 -0700 From: Andy Lutomirski <luto@...capital.net> To: Oleg Nesterov <oleg@...hat.com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: vvar, gup && coredump [removed people who will be bored] On Thu, Mar 12, 2015 at 11:08 AM, Oleg Nesterov <oleg@...hat.com> wrote: > On 03/12, Andy Lutomirski wrote: >> >> On Thu, Mar 12, 2015 at 10:39 AM, Oleg Nesterov <oleg@...hat.com> wrote: >> > Well. Speaking of vdso. I understand that unlikely we can do this, but >> > for uprobes it would be nice to have a anon-inode file behind this mapping, >> > so that vma_interval_tree_foreach() could work, etc. OK, this is completely >> > off-topic, please forget. >> >> Couldn't you do that directly in the uprobes code? That is, create an >> anon_inode file and just map it the old-fashioned way? > > This won't help. Uprobes wants this file mmaped by all applications, so > that build_map_info() can find mm's, vma's, etc to install the system-wide > breakpoint. But again, this is off-topic and unlikely possible. > What's wrong with off-topic? :) As vvar demonstrates, it's possible to add new per-process vmas that show up in all processes automatically. The trickiest part is making it work with CRIU. --Andy > Oleg. > -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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