From: "Arnd Bergmann" <arnd@arndb.de>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: xiujianfeng@huawei.com, kvm@vger.kernel.org,
alvaro.karsz@solid-run.com, linux-pci@vger.kernel.org,
Jason Wang <jasowang@redhat.com>,
linuxppc-dev@lists.ozlabs.org, wangdeming@inspur.com,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
Netdev <netdev@vger.kernel.org>,
angus.chen@jaguarmicro.com, Bjorn Helgaas <bhelgaas@google.com>,
lingshan.zhu@intel.com,
Linus Torvalds <torvalds@linux-foundation.org>,
gavinl@nvidia.com
Subject: Re: [GIT PULL] virtio: fixes, features
Date: Thu, 13 Oct 2022 08:28:03 +0200 [thread overview]
Message-ID: <a35fd31b-0658-4ac1-8340-99cdf4c75bb7@app.fastmail.com> (raw)
In-Reply-To: <20221012180806-mutt-send-email-mst@kernel.org>
On Thu, Oct 13, 2022, at 12:08 AM, Michael S. Tsirkin wrote:
> On Wed, Oct 12, 2022 at 11:06:54PM +0200, Arnd Bergmann wrote:
>> On Wed, Oct 12, 2022, at 7:22 PM, Linus Torvalds wrote:
>> >
>> > The NO_IRQ thing is mainly actually defined by a few drivers that just
>> > never got converted to the proper world order, and even then you can
>> > see the confusion (ie some drivers use "-1", others use "0", and yet
>> > others use "((unsigned int)(-1)".
>>
>> The last time I looked at removing it for arch/arm/, one problem was
>> that there were a number of platforms using IRQ 0 as a valid number.
>> We have converted most of them in the meantime, leaving now only
>> mach-rpc and mach-footbridge. For the other platforms, we just
>> renumbered all interrupts to add one, but footbridge apparently
>> relies on hardcoded ISA interrupts in device drivers. For rpc,
>> it looks like IRQ 0 (printer) already wouldn't work, and it
>> looks like there was never a driver referencing it either.
>
> Do these two boxes even have pci?
Footbridge/netwinder has PCI and PC-style ISA on-board devices
(floppy, ps2 mouse/keyboard, parport, soundblaster, ...), RiscPC
has neither.
Arnd
next prev parent reply other threads:[~2022-10-13 6:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20221010132030-mutt-send-email-mst@kernel.org>
2022-10-12 6:21 ` [GIT PULL] virtio: fixes, features Michael Ellerman
2022-10-12 6:45 ` Angus Chen
2022-10-12 7:35 ` Angus Chen
2022-10-12 11:11 ` Michael S. Tsirkin
2022-10-12 13:28 ` Michael Ellerman
2022-10-12 14:33 ` Michael Ellerman
2022-10-12 15:51 ` Michael S. Tsirkin
2022-10-12 17:22 ` Linus Torvalds
2022-10-12 21:06 ` Arnd Bergmann
2022-10-12 22:08 ` Michael S. Tsirkin
2022-10-13 6:28 ` Arnd Bergmann [this message]
2022-10-13 17:19 ` Linus Torvalds
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=a35fd31b-0658-4ac1-8340-99cdf4c75bb7@app.fastmail.com \
--to=arnd@arndb.de \
--cc=alvaro.karsz@solid-run.com \
--cc=angus.chen@jaguarmicro.com \
--cc=bhelgaas@google.com \
--cc=gavinl@nvidia.com \
--cc=jasowang@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=lingshan.zhu@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=virtualization@lists.linux-foundation.org \
--cc=wangdeming@inspur.com \
--cc=xiujianfeng@huawei.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).