From: Paul Brook <paul@codesourcery.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: blue Swirl <blauwirbel@gmail.com>, Jan Kiszka <jan.kiszka@web.de>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Juan Quintela <quintela@redhat.com>
Subject: Re: [Qemu-devel] [RFT][PATCH 09/15] hpet/rtc: Rework RTC IRQ replacement by HPET
Date: Tue, 25 May 2010 12:23:14 +0100 [thread overview]
Message-ID: <201005251223.14409.paul@codesourcery.com> (raw)
In-Reply-To: <4BFBB23E.20800@siemens.com>
> Paul Brook wrote:
> >>> This is wrong. The hpet device should expose this as an IO pin.
> >>
> >> Will look into this.
> >>
> >> BTW, I just realized that the GPIO handling is apparently lacking
> >> support for attaching an output to multiple inputs. Or am I missing
> >> something?
> >
> > Use an explicit mux.
> >
> > Incidentally I suspect your handling of the ISA IRQs is broken. You may
> > never have more than one source connected to a sink. Shared IRQ lines
> > must be done explicitly.
>
> No, the other way around: one source (RTC) multiple sinks (HPET, ACPI).
> Will probably draft a generic irq/gpio mux.
I realise that. However I'd expect things to break if the guest OS devices to
share an IRQ line between the HPET and some other device.
Paul
next prev parent reply other threads:[~2010-05-25 11:23 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-24 20:13 [Qemu-devel] [RFT][PATCH 00/15] HPET cleanups, fixes, enhancements Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 01/15] hpet: Catch out-of-bounds timer access Jan Kiszka
2010-05-24 20:34 ` [Qemu-devel] " Juan Quintela
2010-05-24 20:36 ` Jan Kiszka
2010-05-24 20:50 ` Juan Quintela
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 02/15] hpet: Coding style cleanups and some refactorings Jan Kiszka
2010-05-24 20:37 ` [Qemu-devel] " Juan Quintela
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 03/15] hpet: Silence warning on write to running main counter Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 04/15] hpet: Move static timer field initialization Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 05/15] hpet: Convert to qdev Jan Kiszka
2010-05-25 9:37 ` Paul Brook
2010-05-25 10:14 ` Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 06/15] hpet: Start/stop timer when HPET_TN_ENABLE is modified Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback Jan Kiszka
2010-05-25 6:07 ` Gleb Natapov
2010-05-25 6:31 ` Jan Kiszka
2010-05-25 6:40 ` Gleb Natapov
2010-05-25 6:54 ` Jan Kiszka
2010-05-25 19:09 ` [Qemu-devel] " Blue Swirl
2010-05-25 20:16 ` Anthony Liguori
2010-05-25 21:44 ` Jan Kiszka
2010-05-26 8:08 ` Gleb Natapov
2010-05-26 20:14 ` Blue Swirl
2010-05-27 5:42 ` Gleb Natapov
2010-05-26 19:55 ` Blue Swirl
2010-05-26 20:09 ` Jan Kiszka
2010-05-26 20:35 ` Blue Swirl
2010-05-26 22:35 ` Jan Kiszka
2010-05-26 23:26 ` Paul Brook
2010-05-27 17:56 ` Blue Swirl
2010-05-27 18:31 ` Jan Kiszka
2010-05-27 18:53 ` Blue Swirl
2010-05-27 19:08 ` Jan Kiszka
2010-05-27 19:19 ` Blue Swirl
2010-05-27 22:19 ` Jan Kiszka
2010-05-28 19:00 ` Blue Swirl
2010-05-30 12:00 ` Avi Kivity
2010-05-27 22:21 ` Paul Brook
2010-05-28 19:10 ` Blue Swirl
2010-05-27 22:21 ` Paul Brook
2010-05-27 6:13 ` Gleb Natapov
2010-05-27 18:37 ` Blue Swirl
2010-05-28 7:31 ` Gleb Natapov
2010-05-28 20:06 ` Blue Swirl
2010-05-28 20:47 ` Gleb Natapov
2010-05-29 7:58 ` Jan Kiszka
2010-05-29 9:35 ` Blue Swirl
2010-05-29 9:45 ` Jan Kiszka
2010-05-29 10:04 ` Blue Swirl
2010-05-29 10:16 ` Jan Kiszka
2010-05-29 10:26 ` Blue Swirl
2010-05-29 10:38 ` Jan Kiszka
2010-05-29 14:46 ` Gleb Natapov
2010-05-29 16:13 ` Blue Swirl
2010-05-29 16:37 ` Gleb Natapov
2010-05-29 21:21 ` Blue Swirl
2010-05-30 6:02 ` Gleb Natapov
2010-05-30 12:10 ` Blue Swirl
2010-05-30 12:24 ` Jan Kiszka
2010-05-30 12:58 ` Blue Swirl
2010-05-31 7:46 ` Jan Kiszka
2010-05-30 12:33 ` Gleb Natapov
2010-05-30 12:56 ` Blue Swirl
2010-05-30 13:49 ` Gleb Natapov
2010-05-30 16:54 ` Blue Swirl
2010-05-30 19:37 ` Blue Swirl
2010-05-30 20:07 ` Gleb Natapov
2010-05-30 20:21 ` Blue Swirl
2010-05-31 5:19 ` Gleb Natapov
2010-06-01 18:00 ` Blue Swirl
2010-06-01 18:30 ` Gleb Natapov
2010-06-02 19:05 ` Blue Swirl
2010-06-03 6:23 ` Jan Kiszka
2010-06-03 6:34 ` Gleb Natapov
2010-06-03 6:59 ` Jan Kiszka
2010-06-03 7:03 ` Gleb Natapov
2010-06-03 7:06 ` Gleb Natapov
2010-06-04 19:05 ` Blue Swirl
2010-06-05 0:04 ` Jan Kiszka
2010-06-05 7:20 ` Blue Swirl
2010-06-05 8:27 ` Jan Kiszka
2010-06-05 9:23 ` Blue Swirl
2010-06-05 12:14 ` Jan Kiszka
2010-06-06 7:15 ` Gleb Natapov
2010-06-06 7:39 ` Jan Kiszka
2010-06-06 7:49 ` Gleb Natapov
2010-06-06 8:07 ` Jan Kiszka
2010-06-06 9:23 ` Gleb Natapov
2010-06-06 10:10 ` Jan Kiszka
2010-06-06 10:27 ` Gleb Natapov
2010-06-06 7:39 ` Blue Swirl
2010-06-06 8:07 ` Gleb Natapov
2010-05-30 13:22 ` Blue Swirl
2010-05-29 9:15 ` Blue Swirl
2010-05-29 9:36 ` Jan Kiszka
2010-05-29 14:38 ` Gleb Natapov
2010-05-29 16:03 ` Blue Swirl
2010-05-29 16:32 ` Gleb Natapov
2010-05-29 20:52 ` Blue Swirl
2010-05-30 5:41 ` Gleb Natapov
2010-05-30 11:41 ` Blue Swirl
2010-05-30 11:52 ` Gleb Natapov
2010-05-30 12:05 ` Avi Kivity
2010-05-27 5:58 ` Gleb Natapov
2010-05-26 19:49 ` Blue Swirl
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 08/15] x86: Refactor RTC IRQ coalescing workaround Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 09/15] hpet/rtc: Rework RTC IRQ replacement by HPET Jan Kiszka
2010-05-25 9:29 ` Paul Brook
2010-05-25 10:23 ` Jan Kiszka
2010-05-25 11:05 ` Paul Brook
2010-05-25 11:19 ` Jan Kiszka
2010-05-25 11:23 ` Paul Brook [this message]
2010-05-25 11:26 ` Jan Kiszka
2010-05-25 12:03 ` Paul Brook
2010-05-25 12:39 ` Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 10/15] hpet: Drop static state Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 11/15] hpet: Add support for level-triggered interrupts Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 12/15] vmstate: Add VMSTATE_STRUCT_VARRAY_UINT8 Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 13/15] hpet: Make number of timers configurable Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 14/15] hpet: Add MSI support Jan Kiszka
2010-05-24 20:13 ` [Qemu-devel] [RFT][PATCH 15/15] monitor/QMP: Drop info hpet / query-hpet Jan Kiszka
2010-05-24 22:16 ` [Qemu-devel] [RFT][PATCH 00/15] HPET cleanups, fixes, enhancements Anthony Liguori
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=201005251223.14409.paul@codesourcery.com \
--to=paul@codesourcery.com \
--cc=blauwirbel@gmail.com \
--cc=jan.kiszka@siemens.com \
--cc=jan.kiszka@web.de \
--cc=qemu-devel@nongnu.org \
--cc=quintela@redhat.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).