From: Richard Weinberger <richard@nod.at>
To: Hajime Tazaki <tazaki@sfc.wide.ad.jp>
Cc: linux-arch@vger.kernel.org, arnd@arndb.de, corbet@lwn.net,
cl@linux.com, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
netdev@vger.kernel.org, linux-mm@kvack.org, jdike@addtoit.com,
rusty@rustcorp.com.au, mathieu.lacage@gmail.com
Subject: Re: [RFC PATCH 00/11] an introduction of library operating system for Linux (LibOS)
Date: Tue, 24 Mar 2015 15:32:05 +0100 [thread overview]
Message-ID: <55117565.6080002@nod.at> (raw)
In-Reply-To: <m2twxacw13.wl@sfc.wide.ad.jp>
Am 24.03.2015 um 15:25 schrieb Hajime Tazaki:
> At Tue, 24 Mar 2015 14:21:49 +0100,
> Richard Weinberger wrote:
>>
>> Am 24.03.2015 um 14:10 schrieb Hajime Tazaki:
>> > == More information ==
>>>
>>> The crucial difference between UML (user-mode linux) and this approach
>>> is that we allow multiple network stack instances to co-exist within a
>>> single process with dlmopen(3) like linking for easy debugging.
>>
>> Is this the only difference?
>> We already have arch/um, why do you need arch/lib/ then?
>> My point is, can't you merge your arch/lib into the existing arch/um stuff?
>> From a very rough look your arch/lib seems like a micro UML.
>
> I understand your point.
> but ptrace(2) based system call interception used by UML
> makes it depend on the host OS (i.e., linux kernel), while
> LibOS uses symbol hijacking with weak alias and LD_PRELOAD.
>
> we're really thinking to run this library on other
> POSIX-like hosts (e.g., osx) though it's not coming yet.
Yeah, but this does not mean that arch/um and arch/lib can't coexist in arch/um.
Maybe you can add a "library operation mode" to UML.
I'll happily help you in that area.
>> BTW: There was already an idea for having UML as regular library.
>> See: http://user-mode-linux.sourceforge.net/old/projects.html
>> "UML as a normal userspace library"
>
> thanks, it's new information for me.
> were there any trial on this idea ?
IIRC Jeff (the original author of UML) wanted to create a special linker script
such that you can build UML as shared object.
Thanks,
//richard
next prev parent reply other threads:[~2015-03-24 14:32 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 13:10 [RFC PATCH 00/11] an introduction of library operating system for Linux (LibOS) Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 01/11] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-03-24 16:13 ` Joe Perches
2015-03-25 15:31 ` Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 02/11] slab: add private memory allocator header for arch/lib Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 03/11] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 04/11] lib: memory management (kernel glue code) Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 05/11] lib: time handling " Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 06/11] lib: context and scheduling " Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 07/11] lib: sysctl " Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 08/11] lib: other kernel glue layer code Hajime Tazaki
2015-03-29 18:17 ` Richard Weinberger
2015-03-31 7:36 ` Hajime Tazaki
2015-04-03 1:24 ` Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 09/11] lib: asm-generic files Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 10/11] lib: libos build scripts and documentation Hajime Tazaki
2015-03-24 13:10 ` [RFC PATCH 11/11] lib: tools used for test scripts Hajime Tazaki
2015-03-24 13:21 ` [RFC PATCH 00/11] an introduction of library operating system for Linux (LibOS) Richard Weinberger
2015-03-24 14:25 ` Hajime Tazaki
2015-03-24 14:32 ` Richard Weinberger [this message]
2015-03-24 15:24 ` Hajime Tazaki
2015-03-24 15:27 ` Richard Weinberger
2015-03-25 14:48 ` Hajime Tazaki
2015-03-25 22:50 ` Richard Weinberger
2015-03-26 16:24 ` Hajime Tazaki
2015-03-26 18:55 ` Richard Weinberger
2015-03-27 3:31 ` Rusty Russell
2015-03-27 3:49 ` Geert Uytterhoeven
2015-03-27 5:52 ` Richard Weinberger
2015-03-27 6:05 ` Hajime Tazaki
2015-03-27 6:34 ` Hajime Tazaki
2015-03-27 9:21 ` Richard Weinberger
2015-03-27 15:17 ` Antti Kantee
2015-03-28 21:17 ` Richard Weinberger
2015-03-29 15:36 ` Hajime Tazaki
2015-03-29 16:47 ` Richard Weinberger
2015-03-29 16:59 ` Antti Kantee
2015-03-29 18:05 ` Richard Weinberger
2015-03-29 15:06 ` Hajime Tazaki
2015-03-30 6:41 ` Richard Weinberger
2015-03-31 7:47 ` Hajime Tazaki
2015-04-09 8:36 ` Richard Weinberger
2015-04-14 3:20 ` Hajime Tazaki
2015-04-01 1:29 ` Rusty Russell
2015-04-03 1:43 ` Hajime Tazaki
2015-04-07 1:25 ` Rusty Russell
2015-04-17 9:36 ` [RFC PATCH v2 " Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 01/11] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 02/11] slab: add private memory allocator header for arch/lib Hajime Tazaki
2015-04-17 12:17 ` Christoph Lameter
2015-04-17 12:44 ` Richard Weinberger
2015-04-17 15:02 ` Hajime Tazaki
2015-04-17 15:08 ` Richard Weinberger
2015-04-17 15:27 ` Hajime Tazaki
2015-04-17 22:26 ` Christoph Lameter
2015-04-17 9:36 ` [RFC PATCH v2 03/11] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 04/11] lib: memory management (kernel glue code) Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 05/11] lib: time handling " Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 06/11] lib: context and scheduling " Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 07/11] lib: sysctl " Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 08/11] lib: other kernel glue layer code Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 09/11] lib: asm-generic files Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 10/11] lib: libos build scripts and documentation Hajime Tazaki
2015-04-17 9:36 ` [RFC PATCH v2 11/11] lib: tools used for test scripts Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 00/10] an introduction of library operating system for Linux (LibOS) Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 01/10] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 02/10] slab: add SLIB (Library memory allocator) for arch/lib Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 03/10] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 04/10] lib: time handling (kernel glue code) Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 05/10] lib: context and scheduling functions (kernel glue code) for libos Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 06/10] lib: sysctl handling (kernel glue code) Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 07/10] lib: other kernel glue layer code Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 08/10] lib: auxially files for auto-generated asm-generic files of libos Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 09/10] lib: libos build scripts and documentation Hajime Tazaki
2015-04-20 20:43 ` Paul Bolle
2015-04-22 5:33 ` Hajime Tazaki
2015-04-19 13:28 ` [RFC PATCH v3 10/10] lib: tools used for test scripts Hajime Tazaki
2015-04-24 7:40 ` [RFC PATCH v3 00/10] an introduction of library operating system for Linux (LibOS) Richard Weinberger
2015-04-24 8:22 ` Hajime Tazaki
2015-04-24 8:59 ` Richard Weinberger
2015-04-24 9:50 ` Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 00/10] an introduction of Linux library operating system (LibOS) Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 01/10] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 02/10] slab: add SLIB (Library memory allocator) for arch/lib Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 03/10] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 04/10] lib: time handling (kernel glue code) Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 05/10] lib: context and scheduling functions (kernel glue code) for libos Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 06/10] lib: sysctl handling (kernel glue code) Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 07/10] lib: other kernel glue layer code Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 08/10] lib: auxially files for auto-generated asm-generic files of libos Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 09/10] lib: libos build scripts and documentation Hajime Tazaki
2015-04-27 3:00 ` [PATCH v4 10/10] lib: tools used for test scripts Hajime Tazaki
2015-04-27 7:29 ` [PATCH v4 00/10] an introduction of Linux library operating system (LibOS) Richard Weinberger
2015-04-27 7:39 ` Richard Weinberger
2015-04-29 23:16 ` Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 " Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 01/10] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 02/10] slab: add SLIB (Library memory allocator) for arch/lib Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 03/10] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 04/10] lib: time handling (kernel glue code) Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 05/10] lib: context and scheduling functions (kernel glue code) for libos Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 06/10] lib: sysctl handling (kernel glue code) Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 07/10] lib: other kernel glue layer code Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 08/10] lib: auxiliary files for auto-generated asm-generic files of libos Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 09/10] lib: libos build scripts and documentation Hajime Tazaki
2015-05-13 5:28 ` [PATCH v5 10/10] lib: tools used for test scripts Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 00/10] an introduction of Linux library operating system (LibOS) Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 01/10] sysctl: make some functions unstatic to access by arch/lib Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 02/10] slab: add SLIB (Library memory allocator) for arch/lib Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 03/10] lib: public headers and API implementations for userspace programs Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 04/10] lib: time handling (kernel glue code) Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 05/10] lib: context and scheduling functions (kernel glue code) for libos Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 06/10] lib: sysctl handling (kernel glue code) Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 07/10] lib: other kernel glue layer code Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 08/10] lib: auxiliary files for auto-generated asm-generic files of libos Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 09/10] lib: libos build scripts and documentation Hajime Tazaki
2015-09-03 14:16 ` [PATCH v6 10/10] lib: tools used for test scripts Hajime Tazaki
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