From: Hajime Tazaki <thehajime@gmail.com>
To: anton.ivanov@kot-begemot.co.uk
Cc: richard.weinberger@gmail.com, linux-arch@vger.kernel.org,
tavi.purdila@gmail.com, linux-um@lists.infradead.org,
retrage01@gmail.com, linux-kernel-library@freelists.org,
sigmaepsilon92@gmail.com
Subject: Re: [RFC v2 07/37] lkl: interrupt support
Date: Wed, 05 Feb 2020 23:24:29 +0900 [thread overview]
Message-ID: <m2ftfpqfhe.wl-thehajime@gmail.com> (raw)
In-Reply-To: <739ada9a-b88a-5192-fb4b-65132a74b4de@kot-begemot.co.uk>
Hello Anton,
On Wed, 05 Feb 2020 19:49:37 +0900,
Anton Ivanov wrote:
> >>> arch/um/lkl/include/asm/irq.h | 13 ++
> >>> arch/um/lkl/include/uapi/asm/irq.h | 36 ++++
> >>> arch/um/lkl/include/uapi/asm/sigcontext.h | 16 ++
> >>> arch/um/lkl/kernel/irq.c | 193 ++++++++++++++++++++++
> >>
> >> Like I said before, this also something to unify with UML.
> >> I'm aware that this is easily said but we cannot have too much duplication.
> >>
> >> Feel free to ask if UML internals give you headache. :-)
> >
> > Same as nommu implementation, I left this part as-is.
> >
> > Triggering interrupts with fd events (delivered by epoll&co) is a hard
> > part to implement host-independent interrupts of LKL. OTOH, the v3
> > patchset shows that it is doable to use UML drivers with the LKL
> > interrupt facility.
>
> Make sure you are testing with the vector network devices, the
> legacy ones are scheduled to be obsoleted at some point
I was aware of the commit to obsolete several backend with the vector
device, but did not include in the patchset and tests. I will try to
do it for the next round.
> I know this will cause a headache on non-Linux, I am happy to write
> wrappers/emulators for recvmms/sendmmsg so these build on the
> systems which do not support them.
If UML is going to extend to support non-Linux host, yes, those kind
of wrappers will be helpful.
Right now, the patchset only focuses on x86 hosts so, this can be
postponed.
-- Hajime
next prev parent reply other threads:[~2020-02-05 14:24 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1571798507.git.thehajime@gmail.com>
2019-10-25 21:34 ` [RFC PATCH 00/47] Unifying LKL into UML Richard Weinberger
2019-10-27 2:34 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 00/37] " Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 01/37] asm-generic: atomic64: allow using generic atomic64 on 64bit platforms Hajime Tazaki
2019-11-25 22:02 ` Richard Weinberger
2019-11-26 14:02 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 02/37] arch: add __SYSCALL_DEFINE_ARCH Hajime Tazaki
2019-11-25 22:02 ` Richard Weinberger
2019-11-27 4:15 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 03/37] lkl: architecture skeleton for Linux kernel library Hajime Tazaki
2019-11-25 22:00 ` Richard Weinberger
2019-11-26 11:42 ` Octavian Purdila
2019-11-26 14:17 ` Hajime Tazaki
2019-11-26 16:02 ` Richard Weinberger
2020-02-05 7:37 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 04/37] lkl: host interface Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 05/37] lkl: memory handling Hajime Tazaki
2019-11-25 22:10 ` Richard Weinberger
2020-02-05 7:38 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 06/37] lkl: kernel threads support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 07/37] lkl: interrupt support Hajime Tazaki
2019-11-25 22:13 ` Richard Weinberger
2020-02-05 7:38 ` Hajime Tazaki
2020-02-05 10:49 ` Anton Ivanov
2020-02-05 14:24 ` Hajime Tazaki [this message]
2020-02-18 8:18 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 08/37] lkl: system call interface and application API Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 09/37] lkl: timers, time and delay support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 10/37] lkl: memory mapped I/O support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 11/37] lkl: basic kernel console support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 12/37] lkl: initialization and cleanup Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 13/37] lkl: plug in the build system Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 14/37] lkl tools: skeleton for host side library, tests and tools Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 15/37] lkl tools: host lib: add utilities functions Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 16/37] lkl tools: host lib: memory mapped I/O helpers Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 17/37] lkl tools: host lib: virtio devices Hajime Tazaki
2019-11-25 22:07 ` Richard Weinberger
2019-11-26 8:43 ` Johannes Berg
2019-11-26 8:50 ` Richard Weinberger
2019-11-26 8:52 ` Johannes Berg
2019-11-26 10:09 ` Richard Weinberger
2019-11-26 10:16 ` Johannes Berg
2019-11-26 10:42 ` Octavian Purdila
2019-11-26 10:49 ` Anton Ivanov
2019-11-27 4:06 ` Hajime Tazaki
2019-11-26 16:04 ` Richard Weinberger
2019-11-27 4:08 ` Hajime Tazaki
2019-11-27 14:28 ` Richard Weinberger
2019-11-28 9:53 ` Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 18/37] lkl tools: host lib: virtio block device Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 19/37] lkl tools: host lib: filesystem helpers Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 20/37] lkl tools: host lib: posix host operations Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 21/37] lkl tools: "boot" test Hajime Tazaki
2020-01-23 19:33 ` Brendan Higgins
2020-01-24 4:32 ` Hajime Tazaki
2020-03-02 19:51 ` Luis Chamberlain
2020-03-02 22:25 ` Brendan Higgins
2019-11-08 5:02 ` [RFC v2 22/37] lkl tools: tool that reads/writes to/from a filesystem image Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 23/37] lkl tools: tool that converts a filesystem image to tar Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 24/37] lkl tools: virtio: add network device support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 25/37] checkpatch: avoid showing BIT_ULL warnings for tools/ files Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 26/37] tools: Add the lkl host library to the common tools Makefile Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 27/37] lkl tools: add lklfuse Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 28/37] lkl: add system call hijack support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 29/37] lkl: add documentation Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 30/37] scripts: revert CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX patches Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 31/37] lkl: add support for Windows hosts Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 32/37] lkl tools: add support for Windows host Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 33/37] kallsyms: Add a config option to select section for kallsyms Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 34/37] lkl: Android ARM (arm/arm64) support Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 35/37] um lkl: add CI tests Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 36/37] um: use lkl virtio_net_tap device as UML device Hajime Tazaki
2019-11-08 5:02 ` [RFC v2 37/37] um: add lkl virtio-blk device Hajime Tazaki
2019-11-08 9:13 ` [RFC v2 00/37] Unifying LKL into UML Anton Ivanov
2019-11-08 11:17 ` Octavian Purdila
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