From: Jan Kiszka <jan.kiszka@web.de>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel@nongnu.org, Gleb Natapov <gleb@redhat.com>,
Juan Quintela <quintela@redhat.com>
Subject: Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback
Date: Sat, 29 May 2010 12:16:13 +0200 [thread overview]
Message-ID: <4C00E96D.2060908@web.de> (raw)
In-Reply-To: <AANLkTinxv5qBTeWaG6KskESJwzDLxgbeRxOGgordnOd1@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1545 bytes --]
Blue Swirl wrote:
>>>> This is - according to my current understanding - the proposed
>>>> alternative architecture:
>>>>
>>>> .---------------.
>>>> | de-coalescing |
>>>> | logic |
>>>> '---------------'
>>>> ^ |
>>>> period,| |IRQ
>>>> coalesced| |(or tuned VM clock)
>>>> (yes/no)| v
>>>> .-------. .--------. .-------.
>>>> | RTC |-----IRQ----->| router |-----IRQ---->| APIC |
>>>> '-------' '--------' '-------'
>>>> | ^ | ^
>>>> | | | |
>>>> '-------period-------' '------period-------'
>>> The period information is already known by the higher level clock
>>> management,
>> The timer device models program the next event of some qemu-timer. There
>> is no tag attached explaining the timer subsystem or anyone else the
>> reason behind this programming.
>
> Yes, but why would we care? All timers in the system besides RTC
> should be affected likewise, this would in fact be the benefit from
> handling the problem at higher level.
And how does your equation for calculating the clock slow-down look like?
Jan
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 257 bytes --]
next prev parent reply other threads:[~2010-05-29 15:47 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 [this message]
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
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=4C00E96D.2060908@web.de \
--to=jan.kiszka@web.de \
--cc=blauwirbel@gmail.com \
--cc=gleb@redhat.com \
--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 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.