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Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with
From: |
Avi Kivity |
Subject: |
Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback |
Date: |
Sun, 30 May 2010 15:00:49 +0300 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Thunderbird/3.0.4 |
On 05/28/2010 01:19 AM, Jan Kiszka wrote:
Still, this does not answer:
- How do you want to detect lost timer ticks?
Your (and Gleb's) approach: during injection
An alternative: during guest ack
The normal pattern is inj/ack/inj/ack; if we see inj/inj/inj we know the
guest isn't keeping up.
- What subsystem(s) keeps track of the backlog?
Clearly, the clock chip (hpet/rtc/pit).
With the alternative approach, the clock emulation requests that acks be
reported via a qemu_irq interface.
- And depending on the above: How to detect at all that a specific IRQ
is a timer tick?
Clearly, a blocker unless the clock is responsible for timekeeping.
--
error compiling committee.c: too many arguments to function
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, (continued)
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Paul Brook, 2010/05/26
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Paul Brook, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/28
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/28
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback,
Avi Kivity <=
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Paul Brook, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/27
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/28
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/28
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/28
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/29