From: Finn Thain <fthain@linux-m68k.org>
To: Laurent Vivier <laurent@vivier.eu>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-m68k <linux-m68k@lists.linux-m68k.org>,
linux-rtc@vger.kernel.org,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: Re: [PATCH 2/2] m68k: introduce a virtual m68k machine
Date: Fri, 1 Oct 2021 11:08:23 +1000 (AEST) [thread overview]
Message-ID: <1050733c-5260-3c1e-1ecc-7d3b58683a88@linux-m68k.org> (raw)
In-Reply-To: <7748de16-1087-1039-a1cc-5a94dc293dbb@vivier.eu>
[-- Attachment #1: Type: text/plain, Size: 1778 bytes --]
On Thu, 30 Sep 2021, Laurent Vivier wrote:
> Le 30/09/2021 à 22:56, John Paul Adrian Glaubitz a écrit :
> >
> > On 4/28/21 14:15, Laurent Vivier wrote:
> >>> I have tested and reviewed your patch, great work!
> >>> I'm confident this can make v5.14, with the small nits fixed.
> >>
> >> Thank you for your review.
> >>
> >> I will answer to some of your comments and update accordingly my patch.
> >
> > It looks like this patch somehow fell off the table, didn't it?
> >
> > I was hoping to be able to build a virt kernel for Debian/m68k by default
> > in the near future.
>
> Yes, I started to update my work according to the comments from Geert but didn't have time to finish.
>
> Especially I tried to remove the LEGACY_TIMER_TICK, but it doesn't work,
There was an RFC patch from Arnd to convert the mac platform from
LEGACY_TIMER_TICK to GENERIC_CLOCKEVENTS:
https://lore.kernel.org/linux-m68k/20201008154651.1901126-14-arnd@arndb.de/
Arnd used a periodic clockevent device. I have a developmental branch
based on that patch.
Alternatively, I have a branch that implements a oneshot clockevent
device. This delivers GENERIC_CLOCKEVENTS and NO_HZ. For this I used VIA 1
timer 1 in free-running mode for the clocksource and VIA 1 timer 2 in
one-shot mode for the clockevent device. (But this does require some QEMU
improvements because there's no oneshot-mode in mos6522.c in mainline
QEMU.)
Anyway, it can be done. If you want to pursue it, perhaps we can
collaborate.
> and as it has been tested like this by you and most of the other m68k
> targets uses it I think I will let the patch with it.
>
> I'm going to update my patch to have a v2, at least to have fresh
> reviews.
>
> Thanks,
> Laurent
>
next prev parent reply other threads:[~2021-10-01 1:08 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-23 22:14 [PATCH 0/2] m68k: Add Virtual M68k Machine Laurent Vivier
2021-03-23 22:14 ` [PATCH 1/2] rtc: goldfish: remove dependency to OF Laurent Vivier
2021-03-23 22:14 ` [PATCH 2/2] m68k: introduce a virtual m68k machine Laurent Vivier
2021-04-27 17:20 ` Laurent Vivier
2021-04-28 12:07 ` Geert Uytterhoeven
2021-04-28 12:15 ` Laurent Vivier
2021-09-30 20:56 ` John Paul Adrian Glaubitz
2021-09-30 21:01 ` Laurent Vivier
2021-10-01 1:08 ` Finn Thain [this message]
2021-04-28 12:04 ` Geert Uytterhoeven
2021-04-28 23:06 ` Josh Juran
2021-04-29 7:23 ` Geert Uytterhoeven
2021-09-30 21:11 ` Laurent Vivier
2021-09-30 21:14 ` John Paul Adrian Glaubitz
2021-04-16 20:26 ` [PATCH 0/2] m68k: Add Virtual M68k Machine Alexandre Belloni
2021-04-16 20:34 ` Alexandre Belloni
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