From: Thomas Gleixner <tglx@linutronix.de>
To: Till Smejkal <till.smejkal@googlemail.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
Andy Lutomirski <luto@kernel.org>,
Richard Henderson <rth@twiddle.net>,
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Subject: Re: [RFC PATCH 00/13] Introduce first class virtual address spaces
Date: Thu, 16 Mar 2017 09:21:38 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1703160919170.3586@nanos> (raw)
In-Reply-To: <20170315220234.mooiyrzqdsglo4lp@arch-dev>
On Wed, 15 Mar 2017, Till Smejkal wrote:
> On Wed, 15 Mar 2017, Andy Lutomirski wrote:
> > > VAS segments on the other side would provide a functionality to
> > > achieve the same without the need of any mounted filesystem. However,
> > > I agree, that this is just a small advantage compared to what can
> > > already be achieved with the existing functionality provided by the
> > > Linux kernel.
> >
> > I see this "small advantage" as "resource leak and security problem".
>
> I don't agree here. VAS segments are basically in-memory files that are
> handled by the kernel directly without using a file system. Hence, if an
Why do we need yet another mechanism to represent something which looks
like a file instead of simply using existing mechanisms and extend them?
Thanks,
tglx
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next prev parent reply other threads:[~2017-03-16 8:21 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-13 22:14 [RFC PATCH 00/13] Introduce first class virtual address spaces Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 01/13] mm: Add mm_struct argument to 'mmap_region' Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 02/13] mm: Add mm_struct argument to 'do_mmap' and 'do_mmap_pgoff' Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 03/13] mm: Rename 'unmap_region' and add mm_struct argument Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 04/13] mm: Add mm_struct argument to 'get_unmapped_area' and 'vm_unmapped_area' Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 05/13] mm: Add mm_struct argument to 'mm_populate' and '__mm_populate' Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 06/13] mm/mmap: Export 'vma_link' and 'find_vma_links' to mm subsystem Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 07/13] kernel/fork: Split and export 'mm_alloc' and 'mm_init' Till Smejkal
2017-03-14 10:18 ` David Laight
2017-03-14 16:18 ` Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 08/13] kernel/fork: Define explicitly which mm_struct to duplicate during fork Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 09/13] mm/memory: Add function to one-to-one duplicate page ranges Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 10/13] mm: Introduce first class virtual address spaces Till Smejkal
2017-03-13 23:52 ` Greg Kroah-Hartman
2017-03-14 0:24 ` Till Smejkal
2017-03-14 1:35 ` Vineet Gupta
2017-03-14 2:34 ` Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 11/13] mm/vas: Introduce VAS segments - shareable address space regions Till Smejkal
2017-03-13 22:27 ` Matthew Wilcox
2017-03-13 22:45 ` Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 12/13] mm/vas: Add lazy-attach support for first class virtual address spaces Till Smejkal
2017-03-13 22:14 ` [RFC PATCH 13/13] fs/proc: Add procfs " Till Smejkal
2017-03-14 0:18 ` [RFC PATCH 00/13] Introduce " Richard Henderson
2017-03-14 0:39 ` Till Smejkal
2017-03-14 1:02 ` Richard Henderson
2017-03-14 1:31 ` Till Smejkal
2017-03-14 0:58 ` Andy Lutomirski
2017-03-14 2:07 ` Till Smejkal
2017-03-14 5:37 ` Andy Lutomirski
2017-03-14 16:12 ` Till Smejkal
2017-03-14 19:53 ` Chris Metcalf
2017-03-14 21:14 ` Till Smejkal
2017-03-15 16:51 ` Andy Lutomirski
2017-03-15 16:57 ` Matthew Wilcox
2017-03-15 19:44 ` Till Smejkal
2017-03-15 19:47 ` Rich Felker
2017-03-15 21:30 ` Till Smejkal
2017-03-15 20:06 ` Andy Lutomirski
2017-03-15 22:02 ` Till Smejkal
2017-03-15 22:09 ` Luck, Tony
2017-03-15 23:18 ` Till Smejkal
2017-03-16 8:21 ` Thomas Gleixner [this message]
2017-03-16 17:29 ` Till Smejkal
2017-03-16 17:42 ` Thomas Gleixner
2017-03-16 17:50 ` Till Smejkal
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