From: Josh Juran <jjuran@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Laurent Vivier <laurent@vivier.eu>,
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: Wed, 28 Apr 2021 19:06:10 -0400 [thread overview]
Message-ID: <F9FB9B1D-3B31-452D-AD67-D1C57A302B83@gmail.com> (raw)
In-Reply-To: <CAMuHMdUFh2W-bY5Ez1aOTZQjq0=THvmOf22JdxWoNNtFLskSzw@mail.gmail.com>
On Apr 28, 2021, at 8:04 AM, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> This can be simplified by shifting irq_pending instead of irq_bit:
>
> do {
> if (irq_pending & 1)
> generic_handle_irq(irq_num);
>
> ++irq_num;
> irq_pending >>= 1;
> } while (irq_pending);
>
> Unfortunately m68k doesn't have a single-instruction __ffs().
The 68000 and 68010 don't, but couldn't the 68020's BFFFO do the job?
Josh
next prev parent reply other threads:[~2021-04-28 23:06 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
2021-04-28 12:04 ` Geert Uytterhoeven
2021-04-28 23:06 ` Josh Juran [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=F9FB9B1D-3B31-452D-AD67-D1C57A302B83@gmail.com \
--to=jjuran@gmail.com \
--cc=a.zummo@towertech.it \
--cc=alexandre.belloni@bootlin.com \
--cc=geert@linux-m68k.org \
--cc=laurent@vivier.eu \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-m68k@lists.linux-m68k.org \
--cc=linux-rtc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.